Database Info

[ROM] How To upgrade or Downgrade LG P940 Prada 3

How to Upgrade or Downgrade LG P940 Prada 3
1. Extract “LGFlashTool 1.2” and instal "Setup_LGFlashTool_1.2.45.921.exe"
2.Replace the file LGFlashTool.exe into C:\LG\LGFlashTool
3. Extract and Install “OMAPFlashInstaller-4.10(2).zip”
4.Exract “LGUnitedModemDriver_WHQL_ML_Ver_4.9.7_All_Win7_LG EAll.zip” and Install “LGUnitedMobileDriver_S497CA20_WHQL_ML_Ver_1.0 .exe ” and “LGUnitedMobileDriver_S497MA20_WHQL_ML_Ver_1.0 .exe ”
5. Turn Off phone, Remove your phone’s SIM and SD cards.
6.Press and hold voll up button in LG P940.
7. When u holding “voll up button” connect the USB cable.
8.When computer detects the new hardware (Omap4430) release “voll up button”.
9. Install the Driver.
10.After Driver installation, go to device manager and change the port “LGE CDMA USB SERIAL PORT” to “com41″.
11. Run LGFlashTool.
12.In DLL select file “LGP940_20120217.dll”
13. In S/W select only *.bin file from “LGP940AT-00-V***-EUR-XXX-***-**-***+0_AP”
14.Choice (Check) “USB” and click OK.
15. Click on Port COM settings(COM plug icon) and select "1"
16.Check as on photos. (host photo is deleted continue in step 17)
17. Click start (The Port 1 window should appear READY).
18.Disconnects USB cable and wait 5 seconds.
19. Press and hold voll up button in Lg P940 and connect USB cable.
20.The update process will begin automatically after that release the “vol up”.
21. When the progress bar reaches 100%, Power ON the LG P940. WAIT 5 MINUT is very slow first boot
If get error 80% (error= the program don't read phone because it restart) no problem go to step 22.
22. Reset the phone after first boot
Driver download:
http://csmg.lgmobile.com:9002/swdata/WEBSW/LGP920/AVIVML/20110623_05/OMAPFlashInstaller-4.10(2).zip
http://csmg.lgmobile.com:9002/data/LGUnitedModemDriver_WHQL_ML_Ver_4.9.7_All_Win7_LGEAll.zip
Sw and Fw:
http://www.mediafire.com/grean89
Same procedure (with photo p920)
http://forum.xda-developers.com/showthread.php?t=1244490
Regards
work 100% tanks for testing "adiif1"

FlashInstaller
Not Found
The requested object does not exist on this server. The link you followed is either outdated, inaccurate, or the server has been instructed not to let you have it.

adiif1 said:
FlashInstaller
Not Found
The requested object does not exist on this server. The link you followed is either outdated, inaccurate, or the server has been instructed not to let you have it.
Click to expand...
Click to collapse
ok fixed link

work thanx!!
all work only have 1 error with 80% (reboot) telephone work good

adiif1 said:
work thanx!!
all work only have 1 error with 80% (reboot) telephone work good
Click to expand...
Click to collapse
yes because the sw flash tool is old 1.2 .. new version 1.3 fix but don't work for me get a reset after first startup

Is this error safe?

adiif1 said:
Is this error safe?
Click to expand...
Click to collapse
yes no problem

great job.
may i ask : V20d+0.part1.rar is same as V20d+0.part2?
or need to be combined?

I respect your work.

hi some questions below:
5. Turn Off phone, Remove your phone’s SIM and SD cards.
with battery? if with battery, will enter: S/W Upgrade mode for step 6&7.
8.When computer detects the new hardware (Omap4430) release “voll up button”.
PC don't detects the New hardware (Omap4430), just install LG driver only. is it right for further step?
17. Click start(The Port 1 window should appear READY).
Don't show Ready.
May help? my phone has problem after kdz flashing.:crying: want to save via this way. :laugh:

Hi
ilovelg4ever said:
5. Turn Off phone, Remove your phone’s SIM and SD cards.
with battery? if with battery, will enter: S/W Upgrade mode for step 6&7.
Click to expand...
Click to collapse
1. after kdz the phone turn on? reset the phone!!
2- 5. no battery into phone... (if don't start S/W without battery instert battery but get error program at finish the update ... no problem error is because phone turn on after 80% automatically but phone is been update) holding “voll up button” and connect cable
ilovelg4ever said:
8.When computer detects the new hardware (Omap4430) release “voll up button”.
PC don't detects the New hardware (Omap4430), just install LG driver only. is it right for further step?
Click to expand...
Click to collapse
3- 8. I recommend reinstall all driver lg + omap
pc don't detect new hardware omap because you having flash KDZ already 'have the drivers on your PC..
ilovelg4ever said:
17. Click start(The Port 1 window should appear READY).
Don't show Ready.
May help? my phone has problem after kdz flashing.:crying: want to save via this way. :laugh:
Click to expand...
Click to collapse
4-17. in computer > go to device manager > looks com ports > your pc read LGE CDMA USB SERIAL PORT? set com41
No > start S/W upgrade phone but the pc don't read the phone test in other pc procedure and if don't work send phone in assistence ...
Yes > go to flash tool Click on Port COM settings (COM plug icon) and select port "1" press start and after you read start u holding “voll up button” connect the USB cable
I hope to have been of helped you

thanks for reply. i work sucessfully. let me share my experience with you.
No exact steps, just some points:
1) Use XP.
2) uninstall all old LG drivers.
3) install OMap & 2 LG drivers.
4) the phone come with battery (if no battery, my pc don't find my phone). Volume up + connect USB.
- Omap didn't appear (i don't know whether the reason is my phone installed OMAP beflore or not).
- Only LG 2-3 drivers to be installed.
5) execute LG flash tool, steps 12-17. Disconnects usb, battery off & in, volume up+connectUSB
6) The update process will begin automatically after that release the “vol up”.
7) phone reboot at 80% (showing "AP download SUccess"), counting continue. (whole procedure finish).
8) few mins later, target is resetting --> reset--..... (showing "Download Fail!)
thnaks grean again.

i have 2 Prada 3.0, the one normal can be flashed vai this way. the another is suck at "S/W screen when i turn it on. but can't be flased via this way, just keep "download fail" after 1-2mins updateing.

ilovelg4ever said:
i have 2 Prada 3.0, the one normal can be flashed vai this way. the another is suck at "S/W screen when i turn it on. but can't be flased via this way, just keep "download fail" after 1-2mins updateing.
Click to expand...
Click to collapse
sorry I can not help you for the second phone!

sorry 2 post

hi did you try to flash via smart flash too?

ilovelg4ever said:
hi did you try to flash via smart flash too?
Click to expand...
Click to collapse
Hi I don t have tested smart flash because crash on my sistem... but if it work on p920 I think that work for prada3..
Sent from my LG-P990 using Tapatalk

..

jbcagampan said:
..
Click to expand...
Click to collapse
read pvt regards

dont work on windows 7 64

[Guide] [How to] Repair IMEI Invalid | NV RAM Warning | Micromax Unite 2

REQUIREMENTS
Rooted Device
Custom Recovery
(CTR, CWM Recommended)
Click to expand...
Click to collapse
One week after i brought my phone, I accidently formatted my device using sp flash tools and lost the IMEI/NVRAM. It has been a real pain for me to repair it because i was new to an mtk device. Finally figured out how to repair by doing many search. So I made this thread to share the working methods to help those people who are suffering from invalid IMEI
So let's start.
Always remember "Prevention is better than cure". If you are planning to flash a custom rom, First of all Backup your IMEI. Don't Trust that a custom ROM flash will not delete your IMEI number. because odds are it will. It's important to store your backup to external SD because some ROM flashing techniques will erase your internal SD. so the best way to keep your IMEI number is to take my advise and make a backup.
Some Video tutorials will be added soon
DISCLAIMER: Do not do try any of these methods unless your IMEI has been lost! Doing so may permanently corrupt your imei partition.​
IMEI Backup & Restore Methods:
1. Mobile Uncle Tools:
1. Open the App,
2. Select IMEI BACKUP RESTORE (MTK)
3. Choose BACK UP TO SDCARD (MTK)
4. Reboot
>> (to restore, choose restore from sd card)
2. MTK Droid Tools [PC Required]:
1. Switch on the phone and connect it to pc.
2. Go to settings->about phone.
3. Tap build number for 7 times.
4. Go back and enter developers options, and check usb debugging on.
5. Start MTK Driod Tools and click root. grant root permission in phone.
6. Click IMEI/NVRAM and click backup or restore as required.
>> (to restore, choose the backup file from nvram backup folder)
Temporary IMEI Restore (without Backup):
(These are Temporary Methods, so you need to do this every time you upgrade Firmware, install a new rom, or doing a factory reset.)
1. Chamelephon
1. Install Chamelephon.apk
2. Open App
3. Type both IMEI Numbers
4. Click "Apply new IMEIs"
5. Reboot
Video Tutorial
2. MTK Droid Tools [PC, ADB Drivers Required]
1. Enable USB debugging
2. Open MTK Droid tools in PC
3. Allow USB debugging in phone if asked
4. Click ROOT button in MTK droid tools
5. Click Yes and Grant/Authorize root permission in phone
6. Click IMEI/NVRAM option in MTK droid tools
7. Type both IMEI numbers
8. Select "Replace IMEI"
9. Click OK
10. Reboot!
Video Tutorial
2. NVRAM Wifi Error
1. Download "NVRAM Wifi Fix.zip"
2. Enter Recovery
3. Install the zip
4. Reboot
Permanent IMEI Restore(without Backup):
1. Maui META 3G Tool
1. Install "Maui META 3G Tool" on your PC
2. Open it.
3. Click "Options ↦ Connect Smart phone into META mode"
4. Click on Reconnect button
5. Switch off your phone
6. Connect via USB Cable
7. Change "Get Version" to "IMEI Download"
8. Click "Change NVRAM Database file"
9. Download & extract "NV Ram Database Files.rar"
10. Select "BPLGUInfoCustomAppSrcP_MT6582_S00_MOLY_WR8_W1315_MD_WG_MP_V5_1_wg_n"
11. Type both IMEI numbers
12. Click "Download to flash"
13. Click "Upload from flash"
14. Close the IMEI Download Tab
15. Disconnect
16. Switch on the phone.
2. IMEI&SN Writer
Didn't tried this method. Hope this too will work!
1. Flashing NVRAM.bin (Recommended for Lolipop Roms )
1. Install SP flash tool
2. Load Scatter file
4. Now press download
5. Connect your phone without battery
6. Insert battery & turn on your device when you see the green tick.
new blog under construction:
for broken links, and other video guides, click here
DOWNLOADS
MOD EDIT - ALL THE LINKS ARE REMOVED SINCE XDA RULES DO NOT PERMIT PAY PER CLICK.
I really worked hard to make this thread. Hit THANKS button if you found this useful
You can add your experience in fixing imei below on this thread. It may help many others! Always remember, Sharing is caring! Thank You.

Reserved
Reserved
USB VCOM Driver installing guide: http://forum.xda-developers.com/showthread.php?t=2206421

NVRAM Error and Serial Number fix with SN WRITE STATION TOOL on unite 2
Hey Guys as u know imei fix with muai meta software guide is already given on first post of unite 2 thread .... So i don't need to guide here to all of you keep in mind before fix imei with muai meta please reset your phone otherwise it sometimes don't detect..
Here in this Guide i will describe how to fix NVRAM error and write serial number with sn Write Station tool
I have also unite 2 8gb model and i have tried it successfully on my lollipop unite 2 device if you are on kitkat may it will work but this guide is only for lollipop users :
steps:
Before starting please see if you have already installed mediatek usb vcom drivers which is needed for flash rom using sp flash tool.
1. First of all download sn write station tool v1.5.3--20121018. i test it with this version.
2. Now extract your stock rom.
3. Now run sn write station tool and select smartphone from platform drop-down option.
4.Select usb instead uart mode.
5. Now tick on sn and wifi only under write item section.
6. Now write your serial number of your device in sn textbox.
7. In wifi textbox write your wifi mac address without colon. after correct wifi address written a green tick will appear.
( To know your correct wifi address go to setting>wifi> option advance>MAC address>
here you will see your correct address write down on sn tool without colon. )
8. Now select db file from extracted rom. name of file is APDB_MT6582_S01_L0.MP2_W15.09
9. Now click on start.
10. Now tick usb debugging in device and switch off your device and connect to computer with battery.
11. in sn write tool it will show successful :good:
12. Sometimes sn write tool switch on your mobile in meta mode but don't write sn and wifi address. Just unplug your device and reconnect it with same condition in which you plup out your device..
if it is in on (boot logo) situation then connect it as it is. otherwise connect it again in switch off mode again.
13. Sn write tool do its work. after successful unplug your device and restart your phone.
This method is successfully tested by me. may be it will helpful to you.

cdc drivers....
hii dude
the tutorial above was good enough bt the thing is tat can u provide link for that cdc drivers which was needed in thah maui thing plzzz

No Sim card detect in my UNITE 2
Hi, Please help me, I updated to lolipop and after that my phone cannot detect sim card. Later I rooted, installed another roms, but still the same issue. Please reply urgently.

dark_x said:
hii dude
the tutorial above was good enough bt the thing is tat can u provide link for that cdc drivers which was needed in thah maui thing plzzz
Click to expand...
Click to collapse
I didnt have it right now. Don't know that where did i find those drivers. Search it in google. I will try to figure it out as i got some free time.

viru_192 said:
Hi, Please help me, I updated to lolipop and after that my phone cannot detect sim card. Later I rooted, installed another roms, but still the same issue. Please reply urgently.
Click to expand...
Click to collapse
What about your imei number???

I tried to google it bt didn't found any appropriate link
Bt try to put up a link for those drivers...
Thanks...
Regards dark_x

rahulsingla said:
Hey Guys as u know imei fix with muai meta software guide is already given on first post of unite 2 thread .... So i don't need to guide here to all of you keep in mind before fix imei with muai meta please reset your phone otherwise it sometimes don't detect..
Here in this Guide i will describe how to fix NVRAM error and write serial number with sn Write Station tool
I have also unite 2 8gb model and i have tried it successfully on my lollipop unite 2 device if you are on kitkat may it will work but this guide is only for lollipop users :
steps:
Before starting please see if you have already installed mediatek usb vcom drivers which is needed for flash rom using sp flash tool.
1. First of all download sn write station tool v1.5.3--20121018. i test it with this version.
2. Now extract your stock rom.
3. Now run sn write station tool and select smartphone from platform drop-down option.
4.Select usb instead uart mode.
5. Now tick on sn and wifi only under write item section.
6. Now write your serial number of your device in sn textbox.
7. In wifi textbox write your wifi mac address without colon. after correct wifi address written a green tick will appear.
( To know your correct wifi address go to setting>wifi> option advance>MAC address>
here you will see your correct address write down on sn tool without colon. )
8. Now select db file from extracted rom. name of file is APDB_MT6582_S01_L0.MP2_W15.09
9. Now click on start.
10. Now tick usb debugging in device and switch off your device and connect to computer with battery.
11. in sn write tool it will show successful :good:
12. Sometimes sn write tool switch on your mobile in meta mode but don't write sn and wifi address. Just unplug your device and reconnect it with same condition in which you plup out your device..
if it is in on (boot logo) situation then connect it as it is. otherwise connect it again in switch off mode again.
13. Sn write tool do its work. after successful unplug your device and restart your phone.
This method is successfully tested by me. may be it will helpful to you.
Click to expand...
Click to collapse
I tried this method but every time I tried, I was getting "Entre Meta Mode Failed" I am unable to understand why my device is not going into meta mode. I have written IMEIs and MAC IDs with this tool on Canvas HD, hell lot of time.
The process for Canvas HD is little different, I used to select both the database files, first "BPLGUInfoCustomAppSrcP_MT6589_S00_MOLY_WR8_W1248_MD_WG_MP_V6_P18" and then this one "APDB_MT6589_S01_MAIN2.1_W10.24" secondly I used to power on my device "Power On" msg was displayed on SN Write Tool.
I tried all possible scenario, selected only one database file, changed the sequence of selecting database files, tried to turn it off after hitting start but worked nothing for me.
When we select Database files the window opens twice, did you select same file both the times? And have you tried to write all the things together, means IMEIs, MAC ID of BT and MAC ID of Wifi in just one go?

answer
nice_guy75 said:
I tried this method but every time I tried, I was getting "Entre Meta Mode Failed" I am unable to understand why my device is not going into meta mode. I have written IMEIs and MAC IDs with this tool on Canvas HD, hell lot of time.
The process for Canvas HD is little different, I used to select both the database files, first "BPLGUInfoCustomAppSrcP_MT6589_S00_MOLY_WR8_W1248_MD_WG_MP_V6_P18" and then this one "APDB_MT6589_S01_MAIN2.1_W10.24" secondly I used to power on my device "Power On" msg was displayed on SN Write Tool.
I tried all possible scenario, selected only one database file, changed the sequence of selecting database files, tried to turn it off after hitting start but worked nothing for me.
When we select Database files the window opens twice, did you select same file both the times? And have you tried to write all the things together, means IMEIs, MAC ID of BT and MAC ID of Wifi in just one go?
Click to expand...
Click to collapse
Yes i select same file for twice name of file is given above in my post and i never try to write other things like bt address, imei same time but i want to say don't try to write bt address because it will show error every time when you try to write and i also want to say that imei number can be written with this tool but select only imei don't other things like sn number, wifi mac address.......etc. try one thing only at same time. means when you want to write imei then select only imei but you can choose sn and wifi mac address at same time it can be flashed successfully......
---------- Post added at 04:48 AM ---------- Previous post was at 04:41 AM ----------
dark_x said:
I tried to google it bt didn't found any appropriate link
Bt try to put up a link for those drivers...
Thanks...
Regards dark_x
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2206421
find drivers in this link ..... thanks to kumar abhishek for his guide for driver and installation procedure.......

nice_guy75 said:
I tried this method but every time I tried, I was getting "Entre Meta Mode Failed" I am unable to understand why my device is not going into meta mode. I have written IMEIs and MAC IDs with this tool on Canvas HD, hell lot of time.
The process for Canvas HD is little different, I used to select both the database files, first "BPLGUInfoCustomAppSrcP_MT6589_S00_MOLY_WR8_W1248_MD_WG_MP_V6_P18" and then this one "APDB_MT6589_S01_MAIN2.1_W10.24" secondly I used to power on my device "Power On" msg was displayed on SN Write Tool.
I tried all possible scenario, selected only one database file, changed the sequence of selecting database files, tried to turn it off after hitting start but worked nothing for me.
When we select Database files the window opens twice, did you select same file both the times? And have you tried to write all the things together, means IMEIs, MAC ID of BT and MAC ID of Wifi in just one go?
Click to expand...
Click to collapse
Hey i have the same problem. Did you find any solution?

girrafe said:
Hey i have the same problem. Did you find any solution?
Click to expand...
Click to collapse
I got this issue while running on lolipop firmware, trying to write imei with my PC running Windows XP, but for kitkat, it works.. These applications didn't worked for me in Windows 8.1 and 10

Hi, I updated my unite 2 to lolipop and after that my phone cannot detect sim card. Later I formatted my rom, and installed kitkat rom, but now it showing that invalid imei .and also battery is draining too fastly .please help me sir. reply urgently.

johnygeorge said:
Hi, I updated my unite 2 to lolipop and after that my phone cannot detect sim card. Later I formatted my rom, and installed kitkat rom, but now it showing that invalid imei .and also battery is draining too fastly .please help me sir. reply urgently.
Click to expand...
Click to collapse
try the permanent imei repair method mentioned in the first post.

ajiththiruvatta said:
try the permanent imei repair method mentioned in the first post.
Click to expand...
Click to collapse
Bro thanks for helping me. I hv one last question i hv nv ram.bin file of my stock rom ok but when i load scatter file in sp flash tool there is no option to flash nvram.bin if u try figure it out i will appreciate.

[Tutorial | In-Depth] Huawei G750-U10 from Android 4.2 to 4.4.2 (+ personal exp)

Hello Everyone. This is my first post on XDA-Developers, and I want to share my experience on how I transferred my Huawei G750-U10 to Android 4.4.2. For the people not interested in my experience, and are only here for the explanation, scroll down to the tutorial part.
Story part (my experience)
First off, I did some research on how to root the phone, because you will need a rooted phone to install other firmware and custom ROMS. Rooting is essentially unlocking an account on your phone that has access to all the files and programs so that you can have more control over your phone (it is normally disabled for security reasons). Rooting the phone was easy. I used a program called RootGenius, which is just a 1 click-root program. Very handy and easy. After this, the hard part started.
Fyi, the only reason that I started this project is because I wanted to play Pokémon GO w/o buying a new device
From this step I did a full backup of my current ROM and NVRAM and wrote down my IMEI numbers (the G750 has 2 IMEI numbers because it has 2 SIM-Card slots). These numbers are unique for your phone and are used for calling and sending SMS messages. So make sure you write them down (in my phone they were also written down under the battery). The program I used to backup the NVRAM and the IMEI numbers is MTKDroidTools.
After this step, I tried unlocking my bootloader. But it was very stubborn (I was using the latest firmware from Huawei, B119) and I tried doing this with fastboot. Which failed every single time and gave a 0x7000 error when I tried to unlock the bootloader. But I have to say that my bootloader was acting weird from the start anyway. Whenever I used the command:
Code:
fastboot oem device-info
It always showed that the bootloader was unlocked, eventhough after I locked it using the command:
Code:
fastboot oem lock
Which is weird. So I will just include a tutorial on how to unlock the bootloader just in case yours works normal.
So, after realising that my bootloader was not working correctly, and I could not install any recovery mod like CWM or TWRP (or any custom ROM for that matter), I found out that I needed to flash to the chip directly. This was also a huge challange, since i've never done this before and I actually did not know what I was doing. I've changed ROMS on phones a couple of times before, but that always was with a unlocked bootloader and so via the "normal" recovery system way.
For this part, I used XDA user: jacktackles' post a lot. He had some handy information about flashing to the chipset immediately and on what files to use. Since my B119 firmware was locked, I first wanted firmware with an unlocked bootloader. So I flashed some Chinese G750 firmware, that changed my device from a G750-U10 to a G750-T00. The flashing process was not flawless at all, and was the part that took me the most time (10+ hours). This all because I forgot to untick 1 simple box... Oh well, I guess that is how it works (at least I got it to work ). So, after flashing this Chinese firmware, the hardest part was done. And I had access to TWRP Recovery. With this I installed the custom ROM that I wanted, and that is where my adventure ended.
So, to summarize: It is not easy, and not beginner friendly. That is why I wanted to make this post: To make it easier for you guys to do the same and get to catch YOUR Pokémon! (Or just to upgrade to 4.4.2). So let's now go to the tutorial part!
Tutorial part
I did this with a Windows 10 64-bit computer, although I would recommend using Windows 7. You will also need a usb-cable to connect your phone to your computer. Make sure that everytime you install a new ROM that you re-enable USB-debugging. You do this by going to your phone options > About Phone > Click "build number" 7 times > Go back to options > Developers options and tick the USB-Debugging tickbox.
Sorry for not uploading screenshots, but XDA prevents me from using any outside links because I'm a new user (so i'll try to be as precise as possible). This means that also any downloadable files should be retrieved from jacktackles' post (again big thanks to him!). His forum post can be found here: http://forum.xda-developers.com/android/general/huawei-g750-u10-honor-3x-kitkat-4-4-2-t3038166.
So, go to his post and download the VCOM drivers, MKT Droid Tools, B113 4.2.2 base with unlocked bootloader, Root Genius, and this ROM from another XDA-Developer: http://forum.xda-developers.com/showthread.php?p=62356379#post62356379 (Thanks a lot mate! Awesome upload). The Gaaps link is not needed with my method, and the last link is down. So you will need to get a replacement ROM for that. I used one from NeedRom. Just go to their site, and search for G750-U10 and download a ROM that you want (which is Android 4.4.2 of course). Or download another rom from any other site. The one I used is called: G750-U10 KitKat which was listed on the site on: 07/22/2015 11:35 pm. But you can also choose to download another ROM.
So to sum up, we got 3 ROMS:
1. The Chinese Firmware downgrade to B113
(FILENAME: G750-U10 V100R001C00B113CUSTC432D001_Firmware_Slovakia_Austria_Lithuania_Czech Republic_Latvia_Estonia_Greece_05021NHU)
2. The ROM from pavel22 to change the device to G750-T00
(FILENAME: G750-T00_mod8_265_FlashTool)
3. The ROM that we finally are after
(FILENAME: Huawei G750 U10 Kit Kat 4.9.16)
(In my case of course, not if you downloaded another "final" ROM)
Okay, so after all the files are downloaded and extracted (except for the 3rd ROM), we can start!
1. Rooting
This step is very simple and quick. Plug in your phone to your PC and open Root Genius. Click the big button and your phone should be rooted. If it gives an error, just try again and again until it works. After this restart your phone, and a new app "RootKing" should be installed. If not, the phone is not rooted.
2. MTK Droid Tools (backing up NVRam & IMEI)
Extract MTK Droid Tools from it's ZIP file, and place it in a folder. Now extract the VCOM drivers and install them. These drivers make MTK Droid Tools recognize your device. After installing the drivers, open up the .exe file from MTK and make sure it recognizes your device. If it does not, reboot your PC and try again. After your device is recognized, install the "adbd insecure" app on your device, from the playstore (or download it somewhere else if you do not want to pay). But trust me, it is worth the money. Once adbd is installed, tick both boxes on the app, so that we can connect to your phone with MTK. If done correctly, MTK Droid Tools should now be able to get full access to your device, and a green box will appear in the left bottom of the program.
Now, backup your NVRam and IMEI. You do this by clicking on the "IMEI/NVRAM" button, and clicking backup. To be safe and for ease of access, write down your IMEI's on a paper or notepad file. Now the real fun starts!
2.5 Unlocking the bootloader (you might not have to do this)
Only do this step if you get a BROM error with code 6045 when trying to flash any roms. Here is how you unlock the bootloader:
1. Install ADB drivers. I used a tool made by XDA user Snoop05 (http://forum.xda-developers.com/showthread.php?p=48915118)
2. Connect your device to your pc
3. Open up a command promt from windows
4. type "adb" and check if it returns a big list of available commands (that you know for sure that adb is installed)
5. Type "fastboot" and check if it returns a big list, for the same reason
6. Now type "adb devices" and check if it gives your device, if not make sure you have correct usb drivers installed for the G750-U10, if not just install HiSuite from Huawei (It comes with the correct drivers), then disconnect your device and type "adb devices" again.
7. Now type "adb reboot-bootloader" and your phone will restart in fastboot mode.
8. Type "fastboot oem unlock" and follow the instructions on your phone screen (they are very small and hard to read).
3. Flashing the Chinese Firmware
In the Chinese firmware folder, there will be 4 sub-folders: SD_Upgrade, Update Tool, USB_DRV, USB_Upgrade.
0. Delete the SD_Upgrade folder (Not needed).
1. Go to USB_DRV and install the .exe file in the: "Driver For servers 2012-11-27" rar file.
2. After this open the Update Tool folder and extract files.
3. Open the flash_tool.exe file, which is used to flash the device (like the name suggests )
4. Once the program is open, click on the "scatter-loading" button. Search for the USB_Upgrade folder, and select the MT6592_Android_scatter.txt file.
5. Turn off your device, remove the battery, wait a few seconds and reinsert the battery back into the device. Do NOT turn on the device.
6. Make sure SP_Flash_Tool is set to "Download only" (can be set by the dropdown box)
7. Click the "Download" button, and connect your device to your PC.
8. Wait, and the progress bar will fill up. DO NOT DISCONNECT YOUR DEVICE OR YOU COULD BRICK IT!
9. Success? Great! Restart the phone and progress to the next step!
10. Failure? Untick the Preloader partition and repeat from step 5. Still not working? Also untick USRDATA and try again.
4. Flashing the: "G750-U10 to G750-T00" Firmware
This will be almost the same as part 3.
Extract the "G750-T00_mod8_265_FlashTool" rar file, and:
3. Open the flash_tool.exe file, which is used to flash the device (like the name suggests )
4. Once the program is open, click on the "scatter-loading" button. Search for the USB_Upgrade folder, and select the MT6592_Android_scatter.txt file (make sure that you select the scatter file from the new rar file, and that you are not using the same one as before).
5. Turn off your device, remove the battery, wait a few seconds and reinsert the battery back into the device. Do NOT turn on the device.
6. Make sure SP_Flash_Tool is set to "Download only" (can be set by the dropdown box)
7. Click the "Download" button, and connect your device to your PC.
8. Wait, and the progress bar will fill up. DO NOT DISCONNECT YOUR DEVICE OR YOU COULD BRICK IT!
9. Success? Great! Restart the phone and progress to the next step!
10. Failure? Untick the Preloader partition and repeat from step 5. Still not working? Also untick USRDATA and try again.
5. Restoring your NVRam and IMEI
You might need to root your device again, check if need be, by searching for an app called SuperSU or RootKing. If they are not present, root the device again with Root Genius.
You will need to re-install the "adbd" app on your new ROM. If there is no Play Store present, search for a Play Store APK on Google. Once, installed check the 2 tickboxes and re-open MTK Droid Tools.
Click on the "IMEI/NVRAM" button restore your backed-up NVRAM and retype you IMEI codes. Once the restores are done, restart the phone and check if you can call someone. If it works, good job! You can now progress to the very last step! If not, check if you entered the IMEI correct. You probably made a Typo.
6. Installing final ROM
Now that you have installed pavel22's ROM, you have access to a recovery system. So copy the whole 3rd zip file to the root folder of you device. Turn off your device, and turn it on again but this time while holding both volume buttons and the power button until TWRP opens. Click on install, search your zip file and swipe right. When it finishes, do a factory reset from TWRP and then reboot the system normally. You should now have a fully working G750-U10 with Android 4.4.2. Congratulations!
This was my tutorial and personal experience with converting my G750-U10 to Android 4.4.2. It has been a wild ride, and i've reached points that I wanted to throw my device against the wall. I'm now very happy with my (feeling like) new device. I can now finally catch 'em all and become the best PokéMaster ever!
~ NeusAap.

Thank you for the tutorial. I know nothing about flashing.
However, I could follow the instruction until 4. Flashing the: "G750-U10 to G750-T00" Firmware.
The problem is that after I had clicked the "Download" button, and connected my device, the error popped up BROM ERROR : S_SECURITY_SECURE_USB_DL_IMAGE_SIGN_HEADER_NOT_FOUND (6045).
Could you please help? Thank you.

NT79 said:
Thank you for the tutorial. I know nothing about flashing.
However, I could follow the instruction until 4. Flashing the: "G750-U10 to G750-T00" Firmware.
The problem is that after I had clicked the "Download" button, and connected my device, the error popped up BROM ERROR : S_SECURITY_SECURE_USB_DL_IMAGE_SIGN_HEADER_NOT_FOUND (6045).
Could you please help? Thank you.
Click to expand...
Click to collapse
That error means that your bootloader must be locked. For me, it was acting weird. They way you want to (try) to unlock the bootloader is as follows:
1. Install ADB drivers. I used a tool made by XDA user Snoop05 (http://forum.xda-developers.com/showthread.php?p=48915118)
2. Connect your device to your pc
3. Open up a command promt from windows
4. type "adb" and check if it returns a big list of available commands (that you know for sure that adb is installed)
5. Type "fastboot" and check if it returns a big list, for the same reason
6. Now type "adb devices" and check if it gives your device, if not make sure you have correct usb drivers installed for the G750-U10, if not just install HiSuite from Huawei (It comes with the correct drivers), then disconnect your device and type "adb devices" again.
7. Now type "adb reboot-bootloader" and your phone will restart in fastboot mode.
8. Type "fastboot oem unlock" and follow the instructions on your phone screen (they are very small and hard to read).
If your bootloader is now unlocked, you should try to flash again. My phone gave an error at the step 9, but I still followed these 9 steps. So the error I got could also have been a visual programming error, or bug.
I hope this helps! Keep me up to date

NT79 said:
Thank you for the tutorial. I know nothing about flashing.
However, I could follow the instruction until 4. Flashing the: "G750-U10 to G750-T00" Firmware.
The problem is that after I had clicked the "Download" button, and connected my device, the error popped up BROM ERROR : S_SECURITY_SECURE_USB_DL_IMAGE_SIGN_HEADER_NOT_FOUND (6045).
Could you please help? Thank you.
Click to expand...
Click to collapse
Same error. I tried several times with "fastboot oem unlock" but it didn't work: err 0x7000. I could't find anything helpful on the internet.
The odd thing is when i typed "fastboot getinfo-bootloader" I got "(bootloader) unlocked".
I just wanted to be a pokemon trainer too

Iroh96 said:
Same error. I tried several times with "fastboot oem unlock" but it didn't work: err 0x7000. I could't find anything helpful on the internet.
The odd thing is when i typed "fastboot getinfo-bootloader" I got "(bootloader) unlocked".
I just wanted to be a pokemon trainer too
Click to expand...
Click to collapse
That was the excact same error I was getting. Also the same deal with the oem get-bootinfo thingy. Are you sure that while flashing you have unticked the "preloader" and the "usrdata" sectors? That is what did it for me honestly

SeñorNeusAap said:
Are you sure that while flashing you have unticked the "preloader" and the "usrdata" sectors? That is what did it for me honestly
Click to expand...
Click to collapse
I'm very sure, i tried locking ad re-unocking the bootloader but i get the same error

Iroh96 said:
I'm very sure, i tried locking ad re-unocking the bootloader but i get the same error
Click to expand...
Click to collapse
Alright, then skip step 3 and go to step 4. I might have screwed up the step orders (It's hard to remember in what order I did all the steps ) if that works, i'll change the OP. I'm dorry if thats the case.

SeñorNeusAap said:
Alright, then skip step 3 and go to step 4. I might have screwed up the step orders (It's hard to remember in what order I did all the steps ) if that works, i'll change the OP. I'm dorry if thats the case.
Click to expand...
Click to collapse
You mean flashing the G750-T00 fw and then the chinese one? So I have to reinstall the original fw? Cause currently I'm running the chinese

Iroh96 said:
You mean flashing the G750-T00 fw and then the chinese one? So I have to reinstall the original fw? Cause currently I'm running the chinese
Click to expand...
Click to collapse
Yes, flash the g750-t00 one, and then the rom that you want if that worked. I think that I might have skipped that whole firmware downgrage rom

Thank you for answering
I tried what you had told me to do, but when I typed "fastboot oem unlock", the phone told me to use Volume Up/Down button. I used "Volume Up" button to unlock bootloader but it failed - err 0x7000 same as Iroh96, I guess. So I typed "fastboot getinfo-bootloader"; however, I got "waiting for device" instead of "(bootloader) unlocked". Then, I tried step 4 but it was still an error 6045. I don't know what to do next.
Why is it so hard to be a pokemon trainer?

hi, i couldn't download the:
"Rooted with twrp recovery inbuild base rom"
because the link is not available.
is this really necessary?
if yes, can you give me another link to download it?
i wanna start follow the steps but first i need all the downloads

Inquiries
I already read and downloaded all files which included in jacktackles thread.. I even read the whole posts
My point of view is, im kinda a noob to root business and afraid to end up by destroying my device especially when I contacted an Egyptian -who had already converted his phone- and he didn't recommend to do this.. so please bare with me.
*first of all is the deal link for "Rooted with twrp recovery inbuild base rom" is this really necessary?
*2nd point is my phones build, its B116. Can I proceed converting my phone or it won't work?
Thanks in advance

FOR THOSE WHO ARE HAVING TROUBLE UNLOCKING THE BOOTLOADER:
I found this post from Pavel22
http://forum.xda-developers.com/showpost.php?p=55497054&postcount=1768
Good luck! I successfully converted my Huawei G750-U10 to G750-T00. Now, I'm on Kitkat 4.4.2. Thanks for this in-depth tutorial, btw. Was really a great help.
SeñorNeusAap said:
Hello Everyone. This is my first post on XDA-Developers, and I want to share my experience on how I transferred my Huawei G750-U10 to Android 4.4.2. For the people not interested in my experience, and are only here for the explanation, scroll down to the tutorial part.
Story part (my experience)
First off, I did some research on how to root the phone, because you will need a rooted phone to install other firmware and custom ROMS. Rooting is essentially unlocking an account on your phone that has access to all the files and programs so that you can have more control over your phone (it is normally disabled for security reasons). Rooting the phone was easy. I used a program called RootGenius, which is just a 1 click-root program. Very handy and easy. After this, the hard part started.
Fyi, the only reason that I started this project is because I wanted to play Pokémon GO w/o buying a new device
From this step I did a full backup of my current ROM and NVRAM and wrote down my IMEI numbers (the G750 has 2 IMEI numbers because it has 2 SIM-Card slots). These numbers are unique for your phone and are used for calling and sending SMS messages. So make sure you write them down (in my phone they were also written down under the battery). The program I used to backup the NVRAM and the IMEI numbers is MTKDroidTools.
After this step, I tried unlocking my bootloader. But it was very stubborn (I was using the latest firmware from Huawei, B119) and I tried doing this with fastboot. Which failed every single time and gave a 0x7000 error when I tried to unlock the bootloader. But I have to say that my bootloader was acting weird from the start anyway. Whenever I used the command:
Code:
fastboot oem device-info
It always showed that the bootloader was unlocked, eventhough after I locked it using the command:
Code:
fastboot oem lock
Which is weird. So I will just include a tutorial on how to unlock the bootloader just in case yours works normal.
So, after realising that my bootloader was not working correctly, and I could not install any recovery mod like CWM or TWRP (or any custom ROM for that matter), I found out that I needed to flash to the chip directly. This was also a huge challange, since i've never done this before and I actually did not know what I was doing. I've changed ROMS on phones a couple of times before, but that always was with a unlocked bootloader and so via the "normal" recovery system way.
For this part, I used XDA user: jacktackles' post a lot. He had some handy information about flashing to the chipset immediately and on what files to use. Since my B119 firmware was locked, I first wanted firmware with an unlocked bootloader. So I flashed some Chinese G750 firmware, that changed my device from a G750-U10 to a G750-T00. The flashing process was not flawless at all, and was the part that took me the most time (10+ hours). This all because I forgot to untick 1 simple box... Oh well, I guess that is how it works (at least I got it to work ). So, after flashing this Chinese firmware, the hardest part was done. And I had access to TWRP Recovery. With this I installed the custom ROM that I wanted, and that is where my adventure ended.
So, to summarize: It is not easy, and not beginner friendly. That is why I wanted to make this post: To make it easier for you guys to do the same and get to catch YOUR Pokémon! (Or just to upgrade to 4.4.2). So let's now go to the tutorial part!
Tutorial part
I did this with a Windows 10 64-bit computer, although I would recommend using Windows 7. You will also need a usb-cable to connect your phone to your computer. Make sure that everytime you install a new ROM that you re-enable USB-debugging. You do this by going to your phone options > About Phone > Click "build number" 7 times > Go back to options > Developers options and tick the USB-Debugging tickbox.
Sorry for not uploading screenshots, but XDA prevents me from using any outside links because I'm a new user (so i'll try to be as precise as possible). This means that also any downloadable files should be retrieved from jacktackles' post (again big thanks to him!). His forum post can be found here: http://forum.xda-developers.com/android/general/huawei-g750-u10-honor-3x-kitkat-4-4-2-t3038166.
So, go to his post and download the VCOM drivers, MKT Droid Tools, B113 4.2.2 base with unlocked bootloader, Root Genius, and this ROM from another XDA-Developer: http://forum.xda-developers.com/showthread.php?p=62356379#post62356379 (Thanks a lot mate! Awesome upload). The Gaaps link is not needed with my method, and the last link is down. So you will need to get a replacement ROM for that. I used one from NeedRom. Just go to their site, and search for G750-U10 and download a ROM that you want (which is Android 4.4.2 of course). Or download another rom from any other site. The one I used is called: G750-U10 KitKat which was listed on the site on: 07/22/2015 11:35 pm. But you can also choose to download another ROM.
So to sum up, we got 3 ROMS:
1. The Chinese Firmware downgrade to B113
(FILENAME: G750-U10 V100R001C00B113CUSTC432D001_Firmware_Slovakia_Austria_Lithuania_Czech Republic_Latvia_Estonia_Greece_05021NHU)
2. The ROM from pavel22 to change the device to G750-T00
(FILENAME: G750-T00_mod8_265_FlashTool)
3. The ROM that we finally are after
(FILENAME: Huawei G750 U10 Kit Kat 4.9.16)
(In my case of course, not if you downloaded another "final" ROM)
Okay, so after all the files are downloaded and extracted (except for the 3rd ROM), we can start!
1. Rooting
This step is very simple and quick. Plug in your phone to your PC and open Root Genius. Click the big button and your phone should be rooted. If it gives an error, just try again and again until it works. After this restart your phone, and a new app "RootKing" should be installed. If not, the phone is not rooted.
2. MTK Droid Tools (backing up NVRam & IMEI)
Extract MTK Droid Tools from it's ZIP file, and place it in a folder. Now extract the VCOM drivers and install them. These drivers make MTK Droid Tools recognize your device. After installing the drivers, open up the .exe file from MTK and make sure it recognizes your device. If it does not, reboot your PC and try again. After your device is recognized, install the "adbd insecure" app on your device, from the playstore (or download it somewhere else if you do not want to pay). But trust me, it is worth the money. Once adbd is installed, tick both boxes on the app, so that we can connect to your phone with MTK. If done correctly, MTK Droid Tools should now be able to get full access to your device, and a green box will appear in the left bottom of the program.
Now, backup your NVRam and IMEI. You do this by clicking on the "IMEI/NVRAM" button, and clicking backup. To be safe and for ease of access, write down your IMEI's on a paper or notepad file. Now the real fun starts!
2.5 Unlocking the bootloader (you might not have to do this)
Only do this step if you get a BROM error with code 6045 when trying to flash any roms. Here is how you unlock the bootloader:
1. Install ADB drivers. I used a tool made by XDA user Snoop05 (http://forum.xda-developers.com/showthread.php?p=48915118)
2. Connect your device to your pc
3. Open up a command promt from windows
4. type "adb" and check if it returns a big list of available commands (that you know for sure that adb is installed)
5. Type "fastboot" and check if it returns a big list, for the same reason
6. Now type "adb devices" and check if it gives your device, if not make sure you have correct usb drivers installed for the G750-U10, if not just install HiSuite from Huawei (It comes with the correct drivers), then disconnect your device and type "adb devices" again.
7. Now type "adb reboot-bootloader" and your phone will restart in fastboot mode.
8. Type "fastboot oem unlock" and follow the instructions on your phone screen (they are very small and hard to read).
3. Flashing the Chinese Firmware
In the Chinese firmware folder, there will be 4 sub-folders: SD_Upgrade, Update Tool, USB_DRV, USB_Upgrade.
0. Delete the SD_Upgrade folder (Not needed).
1. Go to USB_DRV and install the .exe file in the: "Driver For servers 2012-11-27" rar file.
2. After this open the Update Tool folder and extract files.
3. Open the flash_tool.exe file, which is used to flash the device (like the name suggests )
4. Once the program is open, click on the "scatter-loading" button. Search for the USB_Upgrade folder, and select the MT6592_Android_scatter.txt file.
5. Turn off your device, remove the battery, wait a few seconds and reinsert the battery back into the device. Do NOT turn on the device.
6. Make sure SP_Flash_Tool is set to "Download only" (can be set by the dropdown box)
7. Click the "Download" button, and connect your device to your PC.
8. Wait, and the progress bar will fill up. DO NOT DISCONNECT YOUR DEVICE OR YOU COULD BRICK IT!
9. Success? Great! Restart the phone and progress to the next step!
10. Failure? Untick the Preloader partition and repeat from step 5. Still not working? Also untick USRDATA and try again.
4. Flashing the: "G750-U10 to G750-T00" Firmware
This will be almost the same as part 3.
Extract the "G750-T00_mod8_265_FlashTool" rar file, and:
3. Open the flash_tool.exe file, which is used to flash the device (like the name suggests )
4. Once the program is open, click on the "scatter-loading" button. Search for the USB_Upgrade folder, and select the MT6592_Android_scatter.txt file (make sure that you select the scatter file from the new rar file, and that you are not using the same one as before).
5. Turn off your device, remove the battery, wait a few seconds and reinsert the battery back into the device. Do NOT turn on the device.
6. Make sure SP_Flash_Tool is set to "Download only" (can be set by the dropdown box)
7. Click the "Download" button, and connect your device to your PC.
8. Wait, and the progress bar will fill up. DO NOT DISCONNECT YOUR DEVICE OR YOU COULD BRICK IT!
9. Success? Great! Restart the phone and progress to the next step!
10. Failure? Untick the Preloader partition and repeat from step 5. Still not working? Also untick USRDATA and try again.
5. Restoring your NVRam and IMEI
You might need to root your device again, check if need be, by searching for an app called SuperSU or RootKing. If they are not present, root the device again with Root Genius.
You will need to re-install the "adbd" app on your new ROM. If there is no Play Store present, search for a Play Store APK on Google. Once, installed check the 2 tickboxes and re-open MTK Droid Tools.
Click on the "IMEI/NVRAM" button restore your backed-up NVRAM and retype you IMEI codes. Once the restores are done, restart the phone and check if you can call someone. If it works, good job! You can now progress to the very last step! If not, check if you entered the IMEI correct. You probably made a Typo.
6. Installing final ROM
Now that you have installed pavel22's ROM, you have access to a recovery system. So copy the whole 3rd zip file to the root folder of you device. Turn off your device, and turn it on again but this time while holding both volume buttons and the power button until TWRP opens. Click on install, search your zip file and swipe right. When it finishes, do a factory reset from TWRP and then reboot the system normally. You should now have a fully working G750-U10 with Android 4.4.2. Congratulations!
This was my tutorial and personal experience with converting my G750-U10 to Android 4.4.2. It has been a wild ride, and i've reached points that I wanted to throw my device against the wall. I'm now very happy with my (feeling like) new device. I can now finally catch 'em all and become the best PokéMaster ever!
~ NeusAap.
Click to expand...
Click to collapse

I can't download the KitKat rom from needrom.is there any other link?????

Hi mates! I'm stuck in the bootloader unlock step; it keeps showing the 0x7000 error and it doesn't let me flash anything with the SP Flash Tool (guess it's because of the 0x7000 error). I tried to follow the Pavel22 guide posted up there... i can flash the rework-secro succesfully, but i get the 4008 error when flashing the whole rom. Can someone help me? Thanks!!

[Working]Install Windows 10 on Lumia 820 (ROOT access and bootloader methed)

Hi
Its not good that we don't have Windows 10 on our old devices and I recently found a trick to "interop-Unlock" old Lumia phones . with "CustomWPSystem_0601.xap" (selecting mix radio app and "vcREG_MIX_RADIO_bootstrap.xap" to deploy) and with registry changes you can get Windows 10 mobile. but for Some people like me ( in Iran ) MixRadio is not available.but don't worry its not going to keep us from getting Windows 10 have a lot of this Tutr all around but this is a full ALL-IN-ONE for Lumia 820
BY DOING THIS THE WARRENTY IS PERHAPS VOIDED DUE TO ROOT ACCESS GRANTTING AND BOOTLOADER UNLOCKING( who knows )
I TAKE NO RESPONSIBILITY FOR ANY BROKEN DEVICE IN OF ANY KIND.DO IT AT YOUR OWN RISK .YOU WILL LOSE ALL DATA DURING THIS
Tested on Lumia 820 RM-825 Running Windows phone 8.1
NOTE : These steps are very much harder than a simple interop-Unlock and higher at the matter of RISK OF BRICKING YOUR DEVICE. So maybe you get confused or etc.. if you are new to windows phone or if you are a non-expert user. READ BEFORE DOING
1- Opt a Stock FFU file or Download via "NSU For reatil" or "Microsoft Device Recovery" . then name should be something like "RM825_3051.50009.1424.0002_RETAIL_im_mea3_287_02_440287_prd_signed.ffu"
pay attention to 3051.50009.1424.0002 part of the name it should be EXACTLY THE SAME WITH YOUR CURRENT VERSION IN PHONE (for you maybe a different number but still should be same in both your device and FFU file you got). If your Version is not the same, flash it with "NSU For retail" or any other tool.
2- Download Zip File from below and unpack it somewhere safe
3-Make sure to turn off your antivirus and HIPS and Auto Sand box if you have any
4-Go to dir where you unpacked the zip file and head t o "Windows phone Internals" and run "WPinternals.exe" you need to be Admin
5-OPTIONAL : Make a backup of your data
6-Connect your turned on Lumia to PC and let Driver get installed
7- Install "Nokia Emergency Drivers" . I used this. its better to restart your PC then.
8-In "Windows phone internals" click on "Unlock bootloader". and Select the folder you placed FFU file and set "Emergency Files" folder from Extracted(ONLY FOR LUMIA 820 <<RM825_3051.50009.1424.0002_RETAIL_im_mea3_287_02_440287_prd_signed.ffu>> FOR OTHERS VISIT THIS AND DOWNLOAD YOUR OWN) file to respected field and at last "Engineering SBL3" (FOR ALMOST ALL OLD PHONES IS IN ZIP FILE") folder to respected field. and hit continue. Follow next steps on screen
IN NEXT STEPS IGNORE ANY DRIVE ADDED TO YOUR PC . DO NOT CHANGE ANYTHING
9-Then hit "Enable root access " in windows phone internal and set respected fields then hit continue. follow next steps on screen
10- at last when Root access is enabled . you will in stock in Storage mode.to Escape press and hold "power+Vol Down" about 10 secent until phone vibrate (this is a soft reset). after all your phone will restart and will normally boot
11- Use "WPV XAP Deployer 2.0" to Deploy "CustomPFD_0600.xap" (You can find both in extracted zip file) (no need for "developer register" due to Root access)
12-Open CustomPFD added to your app list and head to HKLM-->SYSTEM-->Platform-->DeviceTargetingInfo and change these
Single sim only :
PhoneManufacturerModelName " = RM-984
honeModelName = Lumia 830
PhoneHardwareVariant = RM-984
13- Download windows insider and roll in
14- now due to checksum computing during updates you need to Disable root access (BUT DO NOT RESTORE BOOTLOADER). so get back to Windows phone Internal and Disable root access. then rebbot and get back to normal .
15-check for update first one will be preparation and at secent you will get Windows 10 :laugh:
NOTE : your bootloaer will remain unlocked no problem till now BUT if we get any update to change anything to Secureboot then we are probably going to have our devices broken.
M and F

Followed all the steps worked thank you!
Gesendet von meinem LG-H815 mit Tapatalk

I have done this, step by step and it works. Regarding bootloader, what can go wrong? Will there be some updates which will make changes to secureboot?

ToLive4 said:
I have done this, step by step and it works. Regarding bootloader, what can go wrong? Will there be some updates which will make changes to secureboot?
Click to expand...
Click to collapse
Yes and no!
Microsoft has abandoned lumia 820 updates long time ago so 99% there would be no more updates but in that 1 percent they may release an update which contains new bootloader and overwrite the unlocked one. In that case depend on the new mechanism the solutions can vary ?
Good luck with your new windows 10 mobile device?

i am trying with Indonesian ROM not working..
is that just working only maybe with this rom.
RM825_3051.50009.1424.0002_RETAIL_im_mea3_287_02 _440287_prd_signed.ffu
not work with this one
RM825_3051.50009.1424.0005_RETAIL_apac_indonesia_283_05_445553_prd_signed.ffu

awebagar said:
i am trying with Indonesian ROM not working..
is that just working only maybe with this rom.
RM825_3051.50009.1424.0002_RETAIL_im_mea3_287_02 _440287_prd_signed.ffu
not work with this one
RM825_3051.50009.1424.0005_RETAIL_apac_indonesia_283_05_445553_prd_signed.ffu
Click to expand...
Click to collapse
whats your problem then ?

it worked!!.. thank u :angel::angel::angel:

Thank you
your instructions worked, thank you

HOW?????
Can you post a video tutorial on how to do this?
---------- Post added at 12:23 AM ---------- Previous post was at 12:19 AM ----------
bamfg said:
your instructions worked, thank you
Click to expand...
Click to collapse
I am a noob at this and I dont understand lol. Can u explain better maybe?

If anyone is getting the Bluetooth issues after upgrading (it disables itself/needs to have flight mode switched on and off etc.) I think it's an issue with the latest build that update is sending (I think the last 3 numbers of the version number are 4xx (469?))
With a bit of experimentation (I have a couple of test 820 boards that have broken sim slots) I found that Technical Preview 10.0.14393.67 seems to work OK (most likely with other issues, but Bluetooth is OK) - this is the one you get by signing up for fast loop at all stages during the upgrades
EDIT - Turns out you need to perform a full restore once you've updated to .67 to get Bluetooth working again.

Hey, I did everything until last part : I'm stuck on "Checking for existing updates" :/ wifi + sim data
EDIT : Well, I rebooted multiple time, had to block every app update and system update appear, but i don't know if it's wp10 update :/
EDIT2 : well, updating to 8.1.14219.341 :[
EDIT3 : YaY, win10 update ! xD

i cant get microsoft device recovery to recognize my phone i installed new driver rebooted and still nothing, can someone help ?

It worked!! Thank you for your amazing guide

Hi.
I forgot the password of my Nokia Lumia 820 and I am trying to unlock it using the Aroma file manager. I already downloaded and moved Aroma file manager to the memory card. Now I need to boot my locked Nokia Lumia 820 into recovery mode and go to install zip from SD card. BUT I do not know how to enter the recovery mode in a Nokia Lumia 820. I have tried all these combinations: Power + Volume Up - Power + Volume Down - Power + Volume Up + Volume Down, Power + Volume Up + Camera button- etc, and nothing. could you please help me?

Hello All.. I tried to follow the process to unlock the bootloader of my Lumia 820. But in middle of the process, my laptop crashed
Now my phone is not switching on nor responding to anything. Suggest something to revive the phone.

sun1000 said:
Hi
Its not good that we don't have Windows 10 on our old devices and I recently found a trick to "interop-Unlock" old Lumia phones . with "CustomWPSystem_0601.xap" (selecting mix radio app and "vcREG_MIX_RADIO_bootstrap.xap" to deploy) and with registry changes you can get Windows 10 mobile. but for Some people like me ( in Iran ) MixRadio is not available.but don't worry its not going to keep us from getting Windows 10 have a lot of this Tutr all around but this is a full ALL-IN-ONE for Lumia 820
BY DOING THIS THE WARRENTY IS PERHAPS VOIDED DUE TO ROOT ACCESS GRANTTING AND BOOTLOADER UNLOCKING( who knows )
I TAKE NO RESPONSIBILITY FOR ANY BROKEN DEVICE IN OF ANY KIND.DO IT AT YOUR OWN RISK .YOU WILL LOSE ALL DATA DURING THIS
Tested on Lumia 820 RM-825 Running Windows phone 8.1
NOTE : These steps are very much harder than a simple interop-Unlock and higher at the matter of RISK OF BRICKING YOUR DEVICE. So maybe you get confused or etc.. if you are new to windows phone or if you are a non-expert user. READ BEFORE DOING
1- Opt a Stock FFU file or Download via "NSU For reatil" or "Microsoft Device Recovery" . then name should be something like "RM825_3051.50009.1424.0002_RETAIL_im_mea3_287_02_440287_prd_signed.ffu"
pay attention to 3051.50009.1424.0002 part of the name it should be EXACTLY THE SAME WITH YOUR CURRENT VERSION IN PHONE (for you maybe a different number but still should be same in both your device and FFU file you got). If your Version is not the same, flash it with "NSU For retail" or any other tool.
2- Download Zip File from below and unpack it somewhere safe
3-Make sure to turn off your antivirus and HIPS and Auto Sand box if you have any
4-Go to dir where you unpacked the zip file and head t o "Windows phone Internals" and run "WPinternals.exe" you need to be Admin
5-OPTIONAL : Make a backup of your data
6-Connect your turned on Lumia to PC and let Driver get installed
7- Install "Nokia Emergency Drivers" . I used this. its better to restart your PC then.
8-In "Windows phone internals" click on "Unlock bootloader". and Select the folder you placed FFU file and set "Emergency Files" folder from Extracted(ONLY FOR LUMIA 820 <<RM825_3051.50009.1424.0002_RETAIL_im_mea3_287_02_440287_prd_signed.ffu>> FOR OTHERS VISIT THIS AND DOWNLOAD YOUR OWN) file to respected field and at last "Engineering SBL3" (FOR ALMOST ALL OLD PHONES IS IN ZIP FILE") folder to respected field. and hit continue. Follow next steps on screen
IN NEXT STEPS IGNORE ANY DRIVE ADDED TO YOUR PC . DO NOT CHANGE ANYTHING
9-Then hit "Enable root access " in windows phone internal and set respected fields then hit continue. follow next steps on screen
10- at last when Root access is enabled . you will in stock in Storage mode.to Escape press and hold "power+Vol Down" about 10 secent until phone vibrate (this is a soft reset). after all your phone will restart and will normally boot
11- Use "WPV XAP Deployer 2.0" to Deploy "CustomPFD_0600.xap" (You can find both in extracted zip file) (no need for "developer register" due to Root access)
12-Open CustomPFD added to your app list and head to HKLM-->SYSTEM-->Platform-->DeviceTargetingInfo and change these
Single sim only :
PhoneManufacturerModelName " = RM-984
honeModelName = Lumia 830
PhoneHardwareVariant = RM-984
13- Download windows insider and roll in
14- now due to checksum computing during updates you need to Disable root access (BUT DO NOT RESTORE BOOTLOADER). so get back to Windows phone Internal and Disable root access. then rebbot and get back to normal .
15-check for update first one will be preparation and at secent you will get Windows 10 :laugh:
NOTE : your bootloaer will remain unlocked no problem till now BUT if we get any update to change anything to Secureboot then we are probably going to have our devices broken.
M and F
Click to expand...
Click to collapse
I'm quite new to flashing in Windows Phone. Is the update done through Windows Insider OR Settings > Phone Update?

awebagar said:
i am trying with Indonesian ROM not working..
is that just working only maybe with this rom.
RM825_3051.50009.1424.0002_RETAIL_im_mea3_287_02 _440287_prd_signed.ffu
not work with this one
RM825_3051.50009.1424.0005_RETAIL_apac_indonesia_283_05_445553_prd_signed.ffu
Click to expand...
Click to collapse
mvaidy said:
Hello All.. I tried to follow the process to unlock the bootloader of my Lumia 820. But in middle of the process, my laptop crashed
Now my phone is not switching on nor responding to anything. Suggest something to revive the phone.
Click to expand...
Click to collapse
I know it's 5 months already. Yesterday my phone got disconnected while flashing with WPInternals. It was dead. Fortunately, it was detected by laptop. Remember to use original USB cable or compatible. I wasted hours dealing with unbranded cable. Then I changed the cable with Samsung's one and found it working.
One of these three command revived my phone and set the screen to red screen with Nokia logo:
thor2 -mode emergency -hexfile "C:\PATH_TO\FAST8960_ARROW_ROW.hex" -mbnfile "C:\PATH_TO\RM825_msimage_v1.0.mbn" -orig_gpt
thor2 -mode emergency -hexfile "C:\PATH_TO\FAST8960_ARROW_ROW.hex" -mbnfile "C:\PATH_TO\RM825_msimage_v1.0.mbn" -skipffuflash
thor2 -mode emergency -hexfile "C:\PATH_TO\FAST8960_ARROW_ROW.hex" -mbnfile "C:\PATH_TO\RM825_msimage_v1.0.mbn" -ffufile "C:\PATH_TO_FFU_FILE.ffu" -skipffuflash
Click to expand...
Click to collapse
I turned off the phone by detaching the battery and then I reattached it. Execute this command, then connect the phone to laptop.
thor2 -mode uefiflash -ffufile "C:\PATH_TO_FFU_FILE.ffu" -do_full_nvi_update -do_factory_reset
Click to expand...
Click to collapse
Successfull flash should changed the screen from red to green. Finally, we need to reboot the phone:
thor2 -mode rnd -bootnormalmode
Click to expand...
Click to collapse

Im trying to upgrade my Lumia 820 to windows 10, all was good until step 9
9-Then hit "Enable root access " in windows phone internal and set respected fields then hit continue. follow next steps on screen
where my phone just went blank, i assume somethings wrong with the bootloader and reflashed the bootloader again(with Engineering-SBL3-Lumia-820.bin)
but its still the same. So I went with rooting into the rom and flashing the rom, which worked. But now since Mass Storage Mode is not unlocked, I can't unroot without flashing again. Anyway, I downloaded Windows insider and tap on getting the preview builds, but a server error occurs. Confirmed that my date and time are alright, I have also did the registry editing. I have tried checking for updates, but it seems like its just another 8.1 update. What should my next steps be? Any advice greatly appreciated!

silver987 said:
Im trying to upgrade my Lumia 820 to windows 10, all was good until step 9
9-Then hit "Enable root access " in windows phone internal and set respected fields then hit continue. follow next steps on screen
where my phone just went blank, i assume somethings wrong with the bootloader and reflashed the bootloader again(with Engineering-SBL3-Lumia-820.bin)
but its still the same. So I went with rooting into the rom and flashing the rom, which worked. But now since Mass Storage Mode is not unlocked, I can't unroot without flashing again. Anyway, I downloaded Windows insider and tap on getting the preview builds, but a server error occurs. Confirmed that my date and time are alright, I have also did the registry editing. I have tried checking for updates, but it seems like its just another 8.1 update. What should my next steps be? Any advice greatly appreciated!
Click to expand...
Click to collapse
Try to change the time several hours backward.
When I tried it, Windows Insider successfully checked for update but it said no update. I have no idea if it was my firmware or the update was deleted from the server.

is there a better tutorial? I want to do this in a phone here but don't even know where to start

Chuwi hi9 Pro unlock, root, TWRP, etc.

If you dont have full ROM backup from your device or official ROM, dont do anything in terms of modding but to install vcom drivers (in my case they wont work without Virtual Serial Port Drivers) for bootloader, and adb/fastboot drivers, make sure theyre working, install Miracle Box / SPFlashTool (or similar ?) to be able to backup/flash your ROM/partitions from/to your device.
Check if it works for you (ie backup your ROM and try to flash something (cache) back.
Now when people are scared enough I want to tell you that it is almost impossible to kill (brick) your MTK phone, it happens mostly when people flash something that is not suppoused to be flashed (something from another device), the worst case if you flash wrong preloader or erase preloader but even after this there is a chance for resurrection. it takes time and efforts though.
++++++++++++++++++++++++++++++++++++
This is TWRP 3.2.2.0 recovery for Chuwi hi9 Pro.
Partitions available for backup:
boot, recovery, system, vendor, data (not incl. data/media = internal sd), cache and "para" (if you have got "recovery loop" - flash "para")
.img flashable - boot, recovery
look for detailed instructions for coomon things in other treads, like
- how to install bootloader vcom drivers and adb / fastboot drivers
- How to work with adb / fastboot command from your computer cmd window.
- how to use Miracle Box / SPFlashToll
This is detailed instruction how to make SPFlash backup out of your phone though Miracle Box does it in one click (well, almost)
- how to unlock bootloader (fastboot mode)
- how to use toilet paper (manual mode)
- how to install twrp recovery
- how to root
Unlock, Install, Root in one post
++++++++++++++++++++++++++++++++++++++
So, main point of this thread is TWRP, youll need:
- roll of toilet paper
- spflashtool backup (just in case)
- backup of your data (if you care) - your data will be erased during the process.
- unlocked bootloader
- twrp image
If something went wrong (highly unlikely), but "if".
Worst case scenerio: your phone will not boot into system / recovery
Solution: reflash (fastboot or flash tool): boot / recovery / system
Worst case scenerio: flash factory ROM (SPFlashTool)
Steps to do when you have all knowledge and all files ready.
IN YOUR CURRENT SYSTEM
In settings->System->About tablet -> click several times "build number" untill you see message "now you are developer"
In settings->System->Developer options: Enable USB debugging and OEM Unlock, connect cable
REBOOT INTO FASTBOOT
Power off, Power on holding "vol+"
Youll see black screen with 3 strings of menu (very small font):
- recovery
- fastboot
- system
use "vol+" for navigation, use "vol-" to confirm your choice (fastboot)
OR from your pc cmd window (shift+right click on adb folder -> choose "open command window here") type: adb reboot bootloader
press Enter
UNLOCK BOOTLOADER
on your pc (if cmd window is not ooened yet: shift+right click on adb folder -> choose "open command window here") type: fastboot oem unlock
press Enter
watch your phone and pc screen for messages
if you have vision problems, make sure you have a magnifying glass.
INSTALL TWRP
download hi9pro_twrp.img to your /adb folder
from the same cmd window type:
fastboot flash recovery hi9pro_twrp.img
*
Reboot into twrp and flash Magisk
*
Basically this is it
There is no command from fastboot to reboot into recovery (correct me)
You can power of, power on holding "vol+", choose "recovery" from menu
command to reboot into system: fastboot reboot
+++++++++++++++
* NEW *
Infect_Ed has posted TWRP recovery that he has compiled from source. DOWNLOAD FROM HERE
We don't know how to make twrp recovery work with encrypted data partition.
Read next paragraph if you are OK to trade security (encripred userdata) for functionality.
++++++++++
==========
In case you want to have your userdata decrypted (and full functional twrp), use following steps:
*** Please, note all userdata AND internal SD will be wiped during the process***
If you care
Save Internal SD card content to your ext.SD or computer
Make a Titanium backup of user apps (check Enable external data backup in Titanium settings)
If Titanium fails to write to your ext.SD than change Titanium backup folder location to int.SD
and after backup is done copy Titanium backup folder to ext.SD or PC.
Disable any passwords/pins from Settings->Security & Locations
(I know they are stored in /data/.. and will be erased anyway but just in case)
- Reboot into TWRP
- ftom TWRP -> Wipe ->Format userdata -> Confirm with "yes"
do not reboot into system
- flash encryption_prevener_hi9pro.zip to prevent system automatically encrypt userdata (it is used to insert modified fstab.mt6797 into vendor/etc)
- reboot system
- restore your int.SD content and apps
============
Link to official ROM/Firnware
*** Read this if you have Recovery Loop - no matter how you boot (buttons, from twrp recovery or from adb/fastboot shell) your device you always end up in TWRP recovery ***
- download 2018-09-29--para.zip
- unzip it - there is a folder 2018-09-29--para with 3 files inside
- connect your phone in twrp recovery mode to your computer
(you may need to turm "enable mtp" option in TWRP->mount)
- copy that folder into your sd card, the path is : TWRP/Backups/Hi9Pro
- click "Restore" (on the next screen make sure ExtSD is chosen as backup path)
- check checkbox "para", run restore, reboot
explanation: para is a partition contains last issued kernel reboot flag(command), like "reboot to recovery, reboot to system, etc." I think there is one flag that tells to kernel something like "reboot to recovery, do something untill its done", since this "something" never done, device reboots into recovery over and over again. This happend to me when I tried "factory reset" command from android settings, so android have sent my device into recovery mode where that "factory reset" command had to be performed but never done because its now not stock recovery but twrp.
**** If you have following problems:
Unknown Baseband -> Unknown IMEI -> NO sim card -> NO cell network
Look here first
****
***** If you came here from there.*****
and you are following their instructions, please, note, step 7. Unlock bootloader : DO NOT DO command "fastboot flashing unlock", just skip it.
Also, try to avoid "fastboot boot recovery.img" command to reboot into recovery (just use physical buttons for reboot). I'm not sure but something caused "recovery loop" in one case at least.
****** back-to-encr.zip if you want to encrypt your decrypted userdata (original fstab.mt6797 will be flashed, no data loss, you will not be able to mount userdata in TWRP, first boot may take long time due to encryption process - 10-60 min- depends how much data do you have)
******* twrp_recovery_chuwi-hi9pro_infectEd-XL is same Infect_Ed recovery adopted for our screen.

Hello. I made a mistake last week. I flashed accidently twrp with a scatter File from the HI9 Air through the spflashtool on the Hi9 Pro. Now it doesnt turn on etc. Is it hardbricked or can i still get it back to life?

No, its not complitely bricked if flash tool still recognizes your phone in bootloader mode. Most likely youve made same mistake I did. Depends of how you flashed that recovery - recovery only or full sisyem WITH new recovery. most likely you flashed only recovery partition. than, first, try to reflash backed recovery & next to recovery ("para") partition. in "download only mode" therell be an error "pmt has changed" than try "format & download" and "firmvare upgrade" - use scatter file contained only those two partitions. if you didnt make a backup ill put here that "para" partition and you can use hi9pro twrp img. in case this wont work, you may want to reflash the whole rom. We need to find factory rom image (from Chuwi or someone who did a back up prior he entered his credintals - thats another mistake Ive made Ive dumped a rom with all my logins information). if I have time I'll try "factory reset" to make a backup from "clean" system.
again, its almost impossible to brick mtk completely. even if flash tool doesnt recognize you phone (dead battery) there is a jump-pins method.
upd. Just looked @ Air scatter and found that Air recovery partition size is same as Pro (~16mb). now I dont know haw was that possible to overwrite next to recovery partition(s) and I think I used same Air img as you did and I've got size warning message when I flash it. anyway here is archive with scatter for recovery and para. just add twrp hi9 pro recovery (rename recovery.img to recovery.bin) and try to flash.

I didnt made a Backup (stupid me) i flashed the recovery file with a scatter file. When i plug the device in the pc the USB sound comes and its recognized as MEDIATEK USB PORT (COM8), but its removed automatic (USB Sound for disconnecting) The Screen stays black. So i have to wait for a Rom and a scatter File then?
---------- Post added at 19:50 ---------- Previous post was at 19:39 ----------
I tried your idea. I got an error Message: "Status Preloader Invalid" The Preloader File Format is invalid.

you know how to use flash tool , first you have to press "download" THAN connect usb cable.
but this is a good sign (pc recognize something), you may want to google for something like "unbrick mtk 6797 sp flash tool" for more info
this is archive w. 4 1st partitions (incl preloader)
Ive gotta go. Dont smash your tablet its 100% repairable, well 99.999%

thats how it looks
https://photos.app.goo.gl/9EK8vTwcTS3fDf1a7
---------- Post added at 20:21 ---------- Previous post was at 19:58 ----------
Still get an error Message for the PRELOADER. I read some Tutorials and dont find a Problem in my setup or my doing. Sucks :-/ But Thank you very much for your help

is it "MEDIATEK USB PORT (COM8)" appears for a second in the devices tree or "mediatek preloader usb vcom (android) (com8)"
if second, then everything is OK with the connection.
if its exactly MEDIATEK USB PORT (COM8) then there is something wrong
try to connect cable with diff buttons combination, i.e. "vol+" + connect cable .
try different "download agent" (DA_PL.bin ?)
Though I also used AllInOne_DA and flash tool V.5.1728
also, you might find Miracle Box Tool is easier to use
try "read" option first to backup your current rom
View attachment 4598709
I shoul ask this first:
- have you ulocked bootloader ?
- when your press "power" and "vol+" after some wait is anything appears on the screen
(boot menu: fastboot, recovery, regular boot) ?
- when your press "power" and "vol-" after some wait is anything appears on the screen
(chinese written) ?

Good Morning.
Bootloader is unlocked, no matter which key combinations ill try the screen stays black. When i have the usb cable at the PC (no matter which Port or cable) it the plugin - plugout sound plays every few seconds/minutes (not the same time in between). It is recognized as "MediaTek USB Port (COM4)" (different PC i tried). When ill try to install the vcom drivers i get the message that the best drivers are already installed and that are the mediatek usb port driver.
Image of the device manager: https://ibb.co/erkW6e
zelipukin said:
is it "MEDIATEK USB PORT (COM8)" appears for a second in the devices tree or "mediatek preloader usb vcom (android) (com8)"
if second, then everything is OK with the connection.
if its exactly MEDIATEK USB PORT (COM8) then there is something wrong
try to connect cable with diff buttons combination, i.e. "vol+" + connect cable .
try different "download agent" (DA_PL.bin ?)
Though I also used AllInOne_DA and flash tool V.5.1728
also, you might find Miracle Box Tool is easier to use
try "read" option first to backup your current rom
View attachment 4598709
I shoul ask this first:
- have you ulocked bootloader ?
- when your press "power" and "vol+" after some wait is anything appears on the screen
(boot menu: fastboot, recovery, regular boot) ?
- when your press "power" and "vol-" after some wait is anything appears on the screen
(chinese written) ?
Click to expand...
Click to collapse
---------- Post added at 07:34 ---------- Previous post was at 07:07 ----------
zelipukin i made a short Video about the behavior. The Device seems to activate when i push vol+ or power, but it looses connection when i stop holding the button or sometimes even when i hold the button.
https://drive.google.com/file/d/1m3YLrH5ZaVLttcSfDxx3RvL0DaXPcxzk/view?usp=sharing

...thinking
Just tried...seems like backups I made(and posted here) from Miracle Box is incompatible with SP Flash.
SP Flash doesn't like this and doesn't like that when tries to restore those backups but Miracle Box restores individual partitions or whole ROM w/o problem.
SP Flash is so inconvenient if you try to make a backup ... its also inconvenient when you try to restore.
Where did I get that Miracle Box for free ?
Let me figure out something...
....
This is something beyond my understanding but let me to describe what I did
- in SP Flash I choose scatter file and recovery.bin (like I sent to you)
- download only - no go
- download+format - no go
- firmware update - warning message about wrong partition size or something like this - Ignored - Flashed
- Bricked again (like yours - black screen - that's it)
- OK, I have several backups. Tried all of them - none of them works... except one
- Flashed that backup with SP Flash - no questions, no warnings, no errors - device came alive
- Flashed only recovery.bin - everything went fine
- Tried to find difference btw different backups - but couldn't find any
- So I tried to flash those files (to try 3.zip) several times and everything went OK, so this is 100% working backup.
Try it and see what happens, then we can go somewhere else. I still suspicious about those MTK Usb Com(8) instead of preloader usb. Also if you used "Firmware upgrade" option once, I beleive you'll need full ROM flash. Keep looking for it @ Needrom.com.
Strange things happen. Couple years ago I lost MTP connection with my MiMax. I tried everything possible but no luck - have to use UMS Enabler so I can read/write ExtSD at least, but MTP works with Chuwi.
I spent numerous hours trying to connect Chuwi in preloader mode until found that solution about Virtual Serial Port drivers.

Thanks for your help so far. Seems like my Device is half dead after 2 Hours of use

I'll tried to change the Drivers for the mediatek, it shows the device now with the preloader, but i think it doesnt work right. when i change the usb port it comes back as MediaTek USB Port (COM4). I made you a 15 Second Clip of the behavior.
https://drive.google.com/file/d/1m7wyIlIYJLN7ikmgUTzHBJtBdbZQrYaa/view?usp=sharing
Really weird. :-/
---------- Post added at 14:55 ---------- Previous post was at 14:40 ----------
and no chuwi hi9 pro rom at needrom yet. :-/

Sorry, haven't seen there is second page of this thread.
Saw a video where one guy showed how he changed drivers to right ones.
Main idea is in that short period of time when wrong drivers appear click right mouse button and choose "uninstall drivers"
after this in his video in next attempt system found usb vcomm by itself. worth to try
or other videos where guys catch a moment when this port appears in device tree but choose "update drivers"-> "browse my computer..."-> "let me pick from a list of device drivers" -> remove flag from "show only compatible.."->
I cleaned system, removed apps,accounts, etc. and made a backup of a "clean" ROM (well, almost). will put somewhere when/if I get good wifi somewhere (its 3GB.. w/o data partition) I'm on slow & limited mobile network.
but I don't think you need anything but recovery & para if you never used "format" & "firmware upgrade"

i think i used the upgrade one, after download only didnt work.
Ill tried the same method with changing drivers.
I will sit this one out, till you have uploaded the rom
Thanks for helping me out!
zelipukin said:
Sorry, haven't seen there is second page of this thread.
Saw a video where one guy showed how he changed drivers to right ones.
Main idea is in that short period of time when wrong drivers appear click right mouse button and choose "uninstall drivers"
after this in his video in next attempt system found usb vcomm by itself. worth to try
or other videos where guys catch a moment when this port appears in device tree but choose "update drivers"-> "browse my computer..."-> "let me pick from a list of device drivers" -> remove flag from "show only compatible.."->
I cleaned system, removed apps,accounts, etc. and made a backup of a "clean" ROM (well, almost). will put somewhere when/if I get good wifi somewhere (its 3GB.. w/o data partition) I'm on slow & limited mobile network.
but I don't think you need anything but recovery & para if you never used "format" & "firmware upgrade"
Click to expand...
Click to collapse

Just a few questions after using Hi9 Pro for about a week:
1) Where is the microphone ? Is it the small hole under the volume button ? (Strange position)
2) On the back side the two metallic stripes separating the plastic of the metal body are they something like antennas ? (LTE or WiFi or both ? )
3) What is the version of Bluetooth ? (4.0 or 4.1 or 4.2 ? )
4) Is it possible to use some kind of fast charging with a suitable charger or software app (firmware update) ?
MediaTek has a technology called "Pump Express" or something like that...
5) Do you have sudden, unexpected pop-ups of full screen advertisements while you are working with your tablet ?
How do we get rid of them ?
6) How do I find the LTE band the tablet is actually using while it's in use ?
I don't mean the table of supported bands, I mean the active band while using it.
Thanks!

1) looks like and its logical bc its close to mouth than if they put it in the bottom.
2) not sure, but most likely
3) according to this https://www.manilashaker.com/mediatek-helio-x10-vs-x20-vs-x30-chip-comparison-difference-specs/ its 4.2
4) too many different opinions, cant find the truth
5) none so far
6) you can try to find some info from mtk engineering mode *#*#3646633#*#* from you dialer
but its not intuitive and complicated

zelipukin said:
1) looks like and its logical bc its close to mouth than if they put it in the bottom.
Click to expand...
Click to collapse
Yes, it is a very small hole at the bottom right as you hold it, with a size of the edge of a needle!
zelipukin said:
1)3) according to this https://www.manilashaker.com/mediatek-helio-x10-vs-x20-vs-x30-chip-comparison-difference-specs/ its 4.2
Click to expand...
Click to collapse
Thank you.
zelipukin said:
5) none so far
Click to expand...
Click to collapse
But how did you do that ?
Did you add an Ad Block after rooting the tablet ?
The kind of ads I get, is more of suggested apps to install from Google Play.
It is literally bombarding me with an exhaustive rate.
I went to settings to "advertisements" of Google and it says that I can't turn it off.
Could it be some app that I installed that is spamming me this way ?
Can you suggest something to stop it ?
zelipukin said:
6) you can try to find some info from mtk engineering mode *#*#3646633#*#* from you dialer
but its not intuitive and complicated
Click to expand...
Click to collapse
I installed LTE Discovery and although I'm not rooted it seems that it works OK and it's showing me the bands.
The signal strength is lower than a mobile phone at the same position, same time, same provider.
Do you have an equal signal strength like your mobile phone ?
One more question:
7) Is it feasible for a developer to build a custom ROM for this device if he wants to or there are certain restrictions forbidding custom firmware ?
Is there any chance for a custom ROM in the future, because I don't think Chuwi will upgrade to 8.1 or better Android.
Thank you!

Regarding ads - I didn't do anything, I looked @ settings->google->ads and I can turn it on and then off w/o problem
Also I culdnt find any junk software so far, the phone came from GearBest factory sealed. I didn't do any system modifications except installing Magisk and modules - ExCard Access Enabler, init.d injector, Magisk SELinux Manager, ViperX (slightly better sound from speaker)
I didn't try the device as a phone, though it fit in a pocket of one of my jeans. I'd like to try but my current phone (miMax) has a micro sim.
7) Depends how popular is this device and who (developers) got it. Also, depends if this chipset is used in many other similar models (popular, prefferable) than you don't need to be a real "developer" to port ROM from a similar device and if you find that divice X is updated to 8.1 there is a chance someone will make a port (or you can try to do it yourself). I'm not a big fan of immediate upgrading to a newest version, for me they usually bring more limitations (you cannot let apps to modify files on your own sdcard f.e.) than benefits. I still use >2 y.o. andr. 6.0 custom rom on my MiMax.

zelipukin said:
Regarding ads - I didn't do anything, I looked @ settings->google->ads and I can turn it on and then off w/o problem
Also I culdnt find any junk software so far, the phone came from GearBest factory sealed.
Click to expand...
Click to collapse
Me too, I got a sealed and clean tablet from GearBest but If you look closer to that setting, it says that you can turn on or off the specialized ads for you, but you can't close ads completely.
For example, during web browsing do you see ads inside various sites ?
Or when opening apps on your tablet ?
I think we need an ad-blocker for this.
zelipukin said:
I didn't try the device as a phone, though it fit in a pocket of one of my jeans. I'd like to try but my current phone (miMax) has a micro sim.
Click to expand...
Click to collapse
I meant for mobile 4G data, not as a phone.
In my country we have three bands for LTE:
B3, B7, B20.
When the tablet rotates between 3 and 7, I have poor to zero signal.
But I saw with LTE Discovery that when it switched to 20 then the signal is very good.
So, with the help of MTK Engineering I disabled 3 and 7 bands and everything seems OK now.
I hope B20 to be used everywhere near to me.
zelipukin said:
7) Depends how popular is this device and who (developers) got it. Also, depends if this chipset is used in many other similar models (popular, prefferable) than you don't need to be a real "developer" to port ROM from a similar device and if you find that divice X is updated to 8.1 there is a chance someone will make a port (or you can try to do it yourself). I'm not a big fan of immediate upgrading to a newest version, for me they usually bring more limitations (you cannot let apps to modify files on your own sdcard f.e.) than benefits. I still use >2 y.o. andr. 6.0 custom rom on my MiMax.
Click to expand...
Click to collapse
I'm not familiar with Android internals so much, I am only using a Note II with TWRP and a custom 7.1.2 ROM and I'm missing some simple customizations not available with out Oreo 8.0 stock ROM.
I haven't even tried yet your first post regarding rooting and all the others because I'm not so sure where to find these tools and how to use them.
It could help a lot when you find some time to add more descriptions and links in your first post, if possible like Hi9 Air thread.
Thank you!

I dont know how and why, but I dont have any agressive advertisements. Checked Opera I'm using for webbrowsing - even "block popups" option wasn't checked. Had to download app yesterday (AutoNotification) from gp store and when I started it in a "free mode" there was a message like "to use this app in a free mode you have to agree to see ads", clicked "ok" , then message "downloading..." appeared...and nothing, no ads. I connect my tablet to the internet through my phone but dont think that matter.

Just a few more short questions:
8) Is there any other way to wake up the device instead of pressing the red button ?
For example double tap or maybe using the volume buttons or any other way.
Because I'm afraid of pressing the same button again and again.
9) Does this device have a WiFi 2x2 MIMO ?
I haven't found any particular info on this.
10) What is the kernel of the ROM ?
Is there any GUI compatible like Kernel Aiutor to make changes or take a look at info for the device ?
Thank you!