[Tutorial] How to unbrick T-mobile LG G2 D801 stuck in DemiGod Crash Handler screen - T-Mobile LG G2

I tried rooting the phone and attempted to get twrp on there using one of those apps (believe it was called RashR) and when it rebooted, I was getting an error screen and in this "dload mode" it stated The phone would keep booting up into this screen and I don't think you could push anything via adb when connecting your computer to it.
Warning, I am not responsible for any further damage that may occur.
---------------------------------------------------------------------------
Critical Error!
---------------------------------------------------------------------------
DemiGod Crash Handler : Critical Error!
Press Key to Choose Dload Mode or Reboot
1) Volume up : Dload Mode.
2) Volume Down: Reboot.
If u choose Dload Mode.
please do following action.
1) Dload Mode. please Connect USB
2) Get the Ram Dump image using QPST Configuration.
-------------------------------------------------------------------------
Board Info
Rev. : 1.1 speed.pvs : 1.1 Serial
---------------------------------------------------------------------------
1. Download and install the USB driver and LG Mobile Support Tool (LG PC Suite) from their website:
2. Connect your LG G2 to your computer
3. Hold the power button and the volume up and down buttons all at once for about 10-15 second until the phone reboots.
4. Wait for the download mode screen to pop up
5. Push the volume down button to enter the "Upgrade Firmware" screen
6. Open LG PC Suite and click on "Restore upgrade errors" under the Mobile Device tab.
7. The program may pop open a window that states you need to connect your device several times through the upgrade so just click connect each time
8. Wait for the process to get to 100% for the "upgrade" and your device should complete the firmware update as well.
9. During boot up, all your original apps will be restored.
10. Enjoy!
Feel free to send any donations over to my paypal address [email protected]
Thanks!

I don't get to Download mode.... Meh I have a spare Nexus 5 anyway.

foxyfoxyblah said:
I don't get to Download mode.... Meh I have a spare Nexus 5 anyway.
Click to expand...
Click to collapse
Try holding the power, volume up, and volume down buttons all at once with the cable disconnected. Might need to try this a few times as it doesn't go into download mode every time.

foxyfoxyblah said:
I don't get to Download mode.... Meh I have a spare Nexus 5 anyway.
Click to expand...
Click to collapse
I just went through this after being without my G2 for nearly a year. Luckily, I had other devices but still; I really like my D801. Anyway, I'd flashed a bad bumped bootloader that landed me in "Demigod Mode"; didn't have a PC until I fixed mine this week, and was determined to get the LG up and running. I tried different versions of flash tools, LG's Mobile Support & PC suite, fumbled with the drivers, which in the end is key!
If you're connecting your device to your PC and see QSUSB_BULK as one of the attached devices in Device Manager - assuming you're using a Windows PC - you need the SRK Tool found here:
http://forum.xda-developers.com/lg-g2/general/choise-unbrick-qhsusbbulk-qualcomm-9006-t3093844 because it's likely - as in my case - all your device's partitions have been nuked and you won't be able to get into download mode no matter which combination of key presses you try. Follow @somboons guide. Use his thoroughly amazing, brilliant SRK Tool. He's the real demigod when it comes to LG devices and his tool couldn't be any easier to use. He's done all the hard work, gathering the different partition maps for just about every LG device in existence and I swear by it since my D801 is up and rocking and only because I never gave up.
There are truly gifted people here on XDA that deserve our profuse thanks and so much more for all they do for this community. The task - and the tool - may seem daunting at first, but you'll find it really couldn't have been made any easier so do give it a try.
I mean no disrespect to the OP, but this is what worked for me and I felt it important enough to share for others going through the same situation.

We have the same phone, maybe different revisions (30b ? Mine is 30c). Encountered the same problem. The phone isn't really "bricked". You should still be able to boot normally. It's just the recovery that's trashed.
I induced this problem by running Flashify while SuperSU 2.65 was misconfigured. Flashify will gleefully go about it's business even though SuperSU may be misconfigured.
Here's the fix:
1. Don't use Flashify (or similar tools), prepare to install TWRP via Autorec. This will install TWRP 2.8.6 which is a fairly current version.
2. Under SuperSU 2.65 settings uncheck the "Mount Namespace Separation" box and reboot.
3. Now run Autorec. TWRP will be installed without any problems. I recommend QuickBoot to conveniently boot the TWRP recovery.
This is the shortest path to getting TWRP installed. Its big advantage is that you don't have to explicitly muck around with unlocking the bootloader, Autorec takes care of that for you behind the scenes (via the Loki patch). The author of Autorec cited a problem with Autorec not running in the presence of SuperSU 2.6x. That isn't true, it's simply the settings change I pointed out above. I have contacted the Autorec author about this, he agrees with me, and hopefully will update the Playstore Autorec description as his SuperSU 2.6x warning is creating a lot of unnecessary confusion and misunderstanding.
Enjoy TWRP. I look forward to checking out the CM ROM.
cheers.

This worked for me, great!
Thank you

tinydynamite00 said:
I just went through this after being without my G2 for nearly a year. Luckily, I had other devices but still; I really like my D801. Anyway, I'd flashed a bad bumped bootloader that landed me in "Demigod Mode"; didn't have a PC until I fixed mine this week, and was determined to get the LG up and running. I tried different versions of flash tools, LG's Mobile Support & PC suite, fumbled with the drivers, which in the end is key!
If you're connecting your device to your PC and see QSUSB_BULK as one of the attached devices in Device Manager - assuming you're using a Windows PC - you need the SRK Tool found here:
http://forum.xda-developers.com/lg-g2/general/choise-unbrick-qhsusbbulk-qualcomm-9006-t3093844 because it's likely - as in my case - all your device's partitions have been nuked and you won't be able to get into download mode no matter which combination of key presses you try. Follow @somboons guide. Use his thoroughly amazing, brilliant SRK Tool. He's the real demigod when it comes to LG devices and his tool couldn't be any easier to use. He's done all the hard work, gathering the different partition maps for just about every LG device in existence and I swear by it since my D801 is up and rocking and only because I never gave up.
There are truly gifted people here on XDA that deserve our profuse thanks and so much more for all they do for this community. The task - and the tool - may seem daunting at first, but you'll find it really couldn't have been made any easier so do give it a try.
I mean no disrespect to the OP, but this is what worked for me and I felt it important enough to share for others going through the same situation.
Click to expand...
Click to collapse
Thank you for offering this, but my G2's gone .-.
Now I'm happy with a G4 (For now, hopefully bootloop wont get to me )

Related

Insignia Flex

Anybody have one? It's Best Buy's brand tablet.
insigniaproducts.com/products/computer-speakers-accessories/NS-14T002.html
(can't post a link...)
Just picked up a Flex 8 on Black Friday. Not bad for $80. Not sure if I'd pay full price for it though.
It seems good for the price so far, except I'm having a rough time trying to root it.
Anyone have one and root it?
Employee here and I had to pouch one up as well for the price of $80. Now to figure out root.
Sent from my SPH-L710 using xda app-developers app
Let us know if you get it.
I've tried Bin4ry, doomlord, tpsparky, played around with it myself a bit. Still not luck. Closest I got is normal on Bin4ry. Just when it reboots, it has no root privaledges. su is in /data/local/tmp but it fails to do anything...
I haven't messed around with it until this very moment. I will admit that the price is killer but initial impression with the device could be better. I was impressed and I mean really impressed with its quadrant score. I'll root this device later today. Black Friday sales and I am tired.
---------- Post added at 01:20 AM ---------- Previous post was at 01:18 AM ----------
I found a link to root this device on both ICS and jellybean. I will personally look into it tomorrow but I will post it if you would like to go ahead. The guide itself was written for ICS but later down the thread you will find another link to a working root for jellybean.
http://androidforums.com/insignia-flex-all-things-root/661247-how-root-insignia-flex.html
Please root at your own discresion and I sure hope you purchased a protection plan (GSP) for your tablet.
also picked this up at my BB, was surprised when i walked in at 3pm and they still had about 10. i want to root too
We had a large quantity to sell as well and they all went. It is honestly not half bad. And I would really recommend getting the GSP for the tablet in case of anything. Will report back after rooting.
Let us know if you have any luck. I found the link you posted before which led me to try Bin4ry. The script seems to be updated for JB in general but still had no luck. I'm on a Mac and haven't tried any of the windows rooting apps, like posted at the bottom of that thread. I do have a windows partition and would be willing to try that method if needed. That chinese one at the bottom seems shady regardless though.. I hope there is an alternative to that
Is there a way to flash clockworkmod onto this tablet?
rekagear20 said:
Is there a way to flash clockworkmod onto this tablet?
Click to expand...
Click to collapse
I managed to get the CX-803 version of CWM for Rockchip 3066 from AndroTab.info to work by replacing its kernel with ours by unpacking and repacking with RK3xxx-Firmware-Tools by Sergio.
Note: This is for the Insignia NS-14T002 (aka iRiver NS-14T002) tablet that shipped with Android 4.2.2
Be EXTREMELY careful! Highly recommend you dump your current kernel and recovery partitions and save them somewhere before flashing anything.
If for some reason the recovery doesn't work, you can flash your stock recovery back as long as you can get back into root shell. But, if it fails to boot normally, I have no idea how to fix it. I have not been able to get any of the Rockchip flashing utilities to recognize the tablet so far, in bootloader mode (these devices have no fastboot) or otherwise. So don't blame me if you somehow brick your tablet.
You have been warned!!
CWM & Stock* Recovery image for NS-14T002
* if for some reason you can't back up your own, but again highly recommend backing up your existing recovery in case it's different from mine
You need root, and you need to do the install from root shell (don't forget to su) as described here.
I used /data/local instead of /dev - anywhere writable should be okay.
To boot into recovery:
adb reboot recovery
power off tablet, disconnect USB, press and hold Vol+ and Power until recovery comes up.
USB disconnect is not a strict requirement, but the battery status thing tends to get in the way.
In stock recovery, push Vol+ and Vol- simultaneously to bring up the menu. CWM menu should be visible at launch.
install petrus's Reboot App and use it to Reboot into recovery
Note: In CWM recovery you can swipe up for Vol+ (move up), swipe down for Vol- (move down), swipe left for Power (select), and swipe right for Back.
Re:Insignia Flex Tablet
I actually just purchased one of these last night. It was on sale at Best Buy for $99! I have successfully rooted it and it actually works great! I used Kingo Root to root but first I installed pda net first to install the necessary drivers. I have used this program to root several Android devices and haven't had a problem thus far!
http://www.kingoapp.com/
cramamarshall said:
I actually just purchased one of these last night. It was on sale at Best Buy for $99! I have successfully rooted it and it actually works great! I used Kingo Root to root but first I installed pda net first to install the necessary drivers.
Click to expand...
Click to collapse
Great news! I didn't have luck with that one but it might have been the machine I was using at the time.
Just to confirm, your model came with Jellybean 4.2, Model NS-14T002?
The previous version with Ice Cream Sandwich 4.0 was easier to root.
Sent from a device with no keyboard. Please forgive typos, they may not be my own.
bhiga said:
Great news! I didn't have luck with that one but it might have been the machine I was using at the time.
Just to confirm, your model came with Jellybean 4.2, Model NS-14T002?
The previous version with Ice Cream Sandwich 4.0 was easier to root.
Sent from a device with no keyboard. Please forgive typos, they may not be my own.
Click to expand...
Click to collapse
Yes my device came with 4.2.2 Jelly Bean! My first attempt using Kingo Root it did not see my device. Windows would not install the drivers needed. So I installed PDA net for windows and choose other in the program and once it was done installing it had configured the necessary drivers for Kingo Root to find my tablet and it rooted fine within a couple minutes after that! :good:
help!
klowdhaus said:
Anybody have one? It's Best Buy's brand tablet.
insigniaproducts.com/products/computer-speakers-accessories/NS-14T002.html
(can't post a link...)
Just picked up a Flex 8 on Black Friday. Not bad for $80. Not sure if I'd pay full price for it though.
It seems good for the price so far, except I'm having a rough time trying to root it.
Anyone have one and root it?
Click to expand...
Click to collapse
I was wondering, because I rooted my insignia flex 8 tablet and downloaded an app to try and customize the navigation bar and the developer provided a way on how to do it but said it was risky and took the risk anyway. Unfortunately, after turning on my tablet, it gets stuck on the insignia logo which I'm assuming it is stuck in the boot screen. I emailed the developer on how to fix this and said to flash a ROM to it. But I am just wondering if I am able to still do this even if my tablet gets stuck on the boot screen and freezes. I used ultimate dynamic navbar lite to try and customize my navbar.
arahmahndy said:
I was wondering, because I rooted my insignia flex 8 tablet and downloaded an app to try and customize the navigation bar and the developer provided a way on how to do it but said it was risky and took the risk anyway. Unfortunately, after turning on my tablet, it gets stuck on the insignia logo which I'm assuming it is stuck in the boot screen. I emailed the developer on how to fix this and said to flash a ROM to it. But I am just wondering if I am able to still do this even if my tablet gets stuck on the boot screen and freezes. I used ultimate dynamic navbar lite to try and customize my navbar.
Click to expand...
Click to collapse
I don't have the tablet anymore as it was a gift for a family member that lives elsewhere (I just wanted root so I could remote control it with TeamViewer QuickSupport), but will try to help from my notes and memory.
Flashing ROM may be difficult.
There is no fastboot on these Rockchip devices...
I couldn't find a way to flash without it being bootable and accessible via ADB
None of the Rockchip flashing tools would recognize it, even when I thought I got it booted into flash mode - it loaded drivers, but the flash tools still didn't see it.
The only way I know how to flash is to use a flash tool via ADB root shell.
Have you tried plugging it into USB on computer and booting it? Even if it doesn't reach the launcher, maybe it is accessible from ADB?
If you can access ADB, you may be able to reverse whatever the app changed from ADB shell and uninstall the app. (Politely ask the author for help)
You might be able to flash the system image I took too, but that has potential to brick it even worse.
If you have custom recovery loaded, you should just be able to restore from a backup.
If you don't have custom recovery loaded, things get a little more hairy...
You can try booting into Safe mode, maybe it'll bypass the offending app.
Power off tablet
Unplug USB*
Press and hold Vol- and Power until (hopefully) it completely boots
Try booting into standard recovery and see what your options are there - Factory Reset might help (depends what was changed and where)
Power off tablet
Unplug USB*
Press and hold Vol+ and Power until recovery comes up (Android with open chest)
Press Vol+ and Vol- simultaneously to bring up the menu.
* while unplugging USB isn't really required, because a battery app launches shortly afterward, it can make getting into recovery and safe mode more difficult
The folks over at Freaktab and Vondroid are really the experts at this Rockchip stuff.
For reference, the platform is RK3066, but there are many variations of the platform (different WiFi, memory configuration, etc) so you can't just grab any ROM.
Thank you!
bhiga said:
I don't have the tablet anymore as it was a gift for a family member that lives elsewhere (I just wanted root so I could remote control it with TeamViewer QuickSupport), but will try to help from my notes and memory.
Flashing ROM may be difficult.
There is no fastboot on these Rockchip devices...
I couldn't find a way to flash without it being bootable and accessible via ADB
None of the Rockchip flashing tools would recognize it, even when I thought I got it booted into flash mode - it loaded drivers, but the flash tools still didn't see it.
The only way I know how to flash is to use a flash tool via ADB root shell.
Have you tried plugging it into USB on computer and booting it? Even if it doesn't reach the launcher, maybe it is accessible from ADB?
If you can access ADB, you may be able to reverse whatever the app changed from ADB shell and uninstall the app. (Politely ask the author for help)
You might be able to flash the system image I took too, but that has potential to brick it even worse.
If you have custom recovery loaded, you should just be able to restore from a backup.
If you don't have custom recovery loaded, things get a little more hairy...
You can try booting into Safe mode, maybe it'll bypass the offending app.
Power off tablet
Unplug USB*
Press and hold Vol- and Power until (hopefully) it completely boots
Try booting into standard recovery and see what your options are there - Factory Reset might help (depends what was changed and where)
Power off tablet
Unplug USB*
Press and hold Vol+ and Power until recovery comes up (Android with open chest)
Press Vol+ and Vol- simultaneously to bring up the menu.
* while unplugging USB isn't really required, because a battery app launches shortly afterward, it can make getting into recovery and safe mode more difficult
The folks over at Freaktab and Vondroid are really the experts at this Rockchip stuff.
For reference, the platform is RK3066, but there are many variations of the platform (different WiFi, memory configuration, etc) so you can't just grab any ROM.
Click to expand...
Click to collapse
Thanks for the information! I know I have ADB from rooting my tablet so I'm gonna check how that is when I get home and I have found some rockship information on vondroid so I will check that out also. Thanks for the reply again!
arahmahndy said:
Thanks for the information! I know I have ADB from rooting my tablet so I'm gonna check how that is when I get home and I have found some rockship information on vondroid so I will check that out also. Thanks for the reply again!
Click to expand...
Click to collapse
If you can access ADB then try loading the CWM recovery I posted above. If you can at least get CWM up, at worst case I can give you a copy of my stock backup to restore.
Sent from a device with no keyboard. Please forgive typos, they may not be my own.
arahmahndy said:
Thanks for the information! I know I have ADB from rooting my tablet so I'm gonna check how that is when I get home and I have found some rockship information on vondroid so I will check that out also. Thanks for the reply again!
Click to expand...
Click to collapse
Did you get things sorted out?
If anyone is interested or needs it, Insignia sent me the GPL source.
You can also request it directly from them like it says on the website but it took a week or two (they might not have had a procedure in place yet, the agent had to forward my request to a different department) and I had completely forgotten until an unexpected package arrived.
Performance NS-15at10, ta120, ITQ701
Just thought someone might want to know, kingo root works, updated to 4.4.2, Booster plus battery saver pro is worth the money, better than 3c so far, still looking for more sources, any advice or help is appreciated especially for a recovery, dual bootloaders, ugh
cramamarshall said:
I actually just purchased one of these last night. It was on sale at Best Buy for $99! I have successfully rooted it and it actually works great! I used Kingo Root to root but first I installed pda net first to install the necessary drivers. I have used this program to root several Android devices and haven't had a proble
Can I install drivers without PC?
Click to expand...
Click to collapse

my lg o1 stuck at lg logo, need help

Hi
I tried to install cm11
on The device
And the middle of the installation I registered it was canceled
So I had to install cm7
from the Memory card
I installed it
When I run the device
He got stuck LG logo
What to do?
And I used this guide: http://forum.xda-developers.com/showthread.php?t=2589303
And I followed - Upgrading from another CM10.2 or Older ROM
Sorry for the english, I'm from Israel
And I used google translate
eran32 said:
Hi
I tried to install cm11
on The device
And the middle of the installation I registered it was canceled
So I had to install cm7
from the Memory card
I installed it
When I run the device
He got stuck LG logo
What to do?
And I used this guide: http://forum.xda-developers.com/showthread.php?t=2589303
And I followed - Upgrading from another CM10.2 or Older ROM
Sorry for the english, I'm from Israel
And I used google translate
Click to expand...
Click to collapse
Boot back in to your recovery and wipe cache and dalvik cache. Format system and then install your ROM. There are major differences between CM11 and CM7. When making big jumps like that it's always best to format system before installing a ROM.
shinobisoft said:
Boot back in to your recovery and wipe cache and dalvik cache. Format system and then install your ROM. There are major differences between CM11 and CM7. When making big jumps like that it's always best to format system before installing a ROM.
Click to expand...
Click to collapse
I just did factory reset via cwm
And still have a problem
So do just what you say and do
system format?
You mean that you are going to have a system folder in the mount and stroage given formatting?
eran32 said:
I just did factory reset via cwm
And still have a problem
So do just what you say and do
system format?
You mean that you are going to have a system folder in the mount and stroage given formatting?
Click to expand...
Click to collapse
In CWM select Wipe data/factory reset. This will wipe the cache, dalvik cache and a couple other partitions. Then go to Mounts and Storage and select Format System. That will format the system partition.
Now go back to CWM home screen and install your ROM.
shinobisoft said:
In CWM select Wipe data/factory reset. This will wipe the cache, dalvik cache and a couple other partitions. Then go to Mounts and Storage and select Format System. That will format the system partition.
Now go back to CWM home screen and install your ROM.
Click to expand...
Click to collapse
thanks man, now my lg o1 works
Glad to help
Sent from my LG-P769 using Tapatalk
Hi,
May I ask for help here (instead of creating a new thread) ? I have the same problem: The device is booting loop at the LG screen. Bricked it when I wanted to save the ROM with ROM Manager.
I have no access to recovery mode, but Emergency mode does work (With and without battery).
I've followed multiple guides, including this one:
Most of you are stuck on a yellow screen with”Emergency mode!!” or the phone is not responding at all. You guys wanted a custom rom like Optimus Prime-v2 and let me tell you, this time it will work. Optimus One P500 comes with stock android 2.2 – V10a, V10b … and android 2.2.1 – V10n. They might be done for different regions depending upon the phone release and its popularity and definitely bug fixes and enhancements. To have Prime-v2 on your handset you will require V10a or V10b on your handset. Reason, V10n stock cannot be rooted easily. Rooting the handset is must if Prime-v2 is required on the device. Steps to install V10a, V10b series. I am using Windows 7 32-bit, 3 GB RAM laptop:
1. Clean your system first; get rid of LG PC suite and other stuff shown in Uninstall Program with vendor name as LG. Remove MSXML builts from the handset. Remove Nokia and other drivers if they are on system like Ovi suite etc. I also removed a lot of Microsoft runtime environments. Not sure about the reason but it worked for me.
2. LG usb device drivers, download the application B2CAppSetup.exe http://csmg.lgmobile.com:9002/client/app/B2CAppSetup.exe .
3. In the Menu Bar, click "Options & Help", and click "Country & Language". Select the appropriate Country & Language. I used India and select P500 from the list that popup after you change the country and region. It will download, install and save the drivers somewhere in C:\LGP500\USB_Driver, it will prompt to open the rar files, just click and install the exes seen in them.
4. Reboot the system.
5. Right click on Computer -> Properties -> Device Manager and see for three drivers – LG android usb modem, LGE serial usb port and LG composite USB device. Disable the modem driver and reboot once again.
6. Switch off the phone and press volume up + BACK button + POWER button. Phone should turn yellow with text “Emergency Mode!!” To switch it off you have to remove the battery (I know it hurts, but that’s the only way out here). Switch off and let’s continue with the setup.
7. To do the KDZ of system you will require the KDZ software updater, links keep going off and on internet. Try searching for “KDZ_FW_UPD_EN” or “KDZ_FW_UPD_EN.7z” in Google and download the software. It should be somewhere around 2.3 MB. To use it you will required some good version of WinZip or winrar again Google it and install the 7z archive utility.
8. Install msxml.msi as the manual or readme.txt says to do so.
9. To get the V10x Official ROM, you need to first determine the ROM of your choice. List of all firmware available for LG Optimus One P500 (list of codes) http://csmg.lgmobile.com:9002/csmg/b2c/client/ezlooks_model_list.jsp?model=LGP500 , search for your country (use IE it looks sexy in it), I looked out for IND/INDIA. Download link to the ROM is http://csmg.lgmobile.com:9002/swdata/WEBSW/LGP500/XXXXX/V10a_00/V10A_00.kdz where XXXX is code from list of codes. In my case it was: AINDBK. Save the file.
10. Prepare the handset by removing the SD card and boot it to emergency mode (some are already stuck on it so reading this post…: D) using the key combination stated above.
11. Connect to the PC and it should say, installing drivers’ blah… blah … your device is ready to use now.
12. Run the KDZ updater downloaded in step 7. Select 3GQCT in Type, DIAG in PhoneMode, and browse for ROM V10a in KDZ file and hit Launch Software update. Wait for somewhere around 5-10 minutes. It should say ===FINISHED=== in the log window of updater.
13. Handset will reboot, if not wait for another 5 minutes. Unplug from USB and try to switch it on.
Click to expand...
Click to collapse
My problem is that KDZ still doesn't find my phone after all these attempts - I uninstalled the device driver, then reinstalled it succesfully (B2CAppSetup.exe). I reboot, install msxml.msi, and start KDZ.
Next, I power my phone in Emergency phone, plug it, and it is detected for the first time by the computer. I do have LGE Android Platform Composite USB Device, listed in the Device Manager, as well as LGE Android Platform USB Modem.
Using KDZ, I select the "3GQCT" type, phone mode "DIAG", with the correct KDZ file I've downloaded earlier. Once I launch the software update, phone is not found.
I've tried several times, including desactivating the LG Modem from the Device Manager; unfortunately, when I disable it I need to reboot - I do reboot, but then the LGE Android Platform Composite USB Device is absent from the device manager, and isn't detected by Windows at all, until I fully reinstall the driver (...).
I really don't know what I'm doing wrong - note that I use a laptop with Windows 7 x64; I know laptops handle USB port in a different way than desktops.
Can you help please?
I must be SO close... =(
Thanks, I really appreciate it!
GameX2 said:
Hi,
May I ask for help here (instead of creating a new thread) ? I have the same problem: The device is booting loop at the LG screen. Bricked it when I wanted to save the ROM with ROM Manager.
I have no access to recovery mode, but Emergency mode does work (With and without battery).
I've followed multiple guides, including this one:
My problem is that KDZ still doesn't find my phone after all these attempts - I uninstalled the device driver, then reinstalled it succesfully (B2CAppSetup.exe). I reboot, install msxml.msi, and start KDZ.
Next, I power my phone in Emergency phone, plug it, and it is detected for the first time by the computer. I do have LGE Android Platform Composite USB Device, listed in the Device Manager, as well as LGE Android Platform USB Modem.
Using KDZ, I select the "3GQCT" type, phone mode "DIAG", with the correct KDZ file I've downloaded earlier. Once I launch the software update, phone is not found.
I've tried several times, including desactivating the LG Modem from the Device Manager; unfortunately, when I disable it I need to reboot - I do reboot, but then the LGE Android Platform Composite USB Device is absent from the device manager, and isn't detected by Windows at all, until I fully reinstall the driver (...).
I really don't know what I'm doing wrong - note that I use a laptop with Windows 7 x64; I know laptops handle USB port in a different way than desktops.
Can you help please?
I must be SO close... =(
Thanks, I really appreciate it!
Click to expand...
Click to collapse
First, serious word of advice. Stay away from ROM Manager. It does not handle this device correctly.
It sounds to me like you are not entering Emergency Mode correctly. Yes, the LG USB Modem must be disabled. Power off the device. Press the "Back + Volume Up + Power" buttons together until the device boots to Emergency Mode. Now connect device to you PC/laptop. This can also be done with the battery removed and the device off. Same method except no power button involved. Press the "Volume Up + Back" buttons while attaching your device to your data cable, assuming it's already attached to your PC/laptop.
The attachment I've posted is a stripped down version of the KDZ Updater. All you need to supply is the correct KDZ file for your phone. This one does not require any of LG's other crap software either.
Download to your PC. Extract to a folder of your choosing. Read the ReadMe.txt carefully and follow it's directions to the letter. I just used this to revive two ( 2 ) bricked P506's.
If you can boot to fastboot mode, there is a tool in my signature, Android Flash Recovery, that is designed to flash a recovery to a device with fastboot. So you have two options to restore, revive your device.
shinobisoft said:
First, serious word of advice. Stay away from ROM Manager. It does not handle this device correctly.
It sounds to me like you are not entering Emergency Mode correctly. Yes, the LG USB Modem must be disabled. Power off the device. Press the "Back + Volume Up + Power" buttons together until the device boots to Emergency Mode. Now connect device to you PC/laptop. This can also be done with the battery removed and the device off. Same method except no power button involved. Press the "Volume Up + Back" buttons while attaching your device to your data cable, assuming it's already attached to your PC/laptop.
The attachment I've posted is a stripped down version of the KDZ Updater. All you need to supply is the correct KDZ file for your phone. This one does not require any of LG's other crap software either.
Download to your PC. Extract to a folder of your choosing. Read the ReadMe.txt carefully and follow it's directions to the letter. I just used this to revive two ( 2 ) bricked P506's.
If you can boot to fastboot mode, there is a tool in my signature, Android Flash Recovery, that is designed to flash a recovery to a device with fastboot. So you have two options to restore, revive your device.
Click to expand...
Click to collapse
Hey, cheers !!
That was all I needed to do with this simple version, the update got applied properly, and I saw the FINISHED message.
My phone "rebooted". Well, what I see now if the Android logo with a big " ! ", which is normal according to what I've read.
I will do more ressearch to make sure what I do if correct now: is this safe to power off/reboot at this screen? I believe it's the last step.
GameX2 said:
Hey, cheers !!
That was all I needed to do with this simple version, the update got applied properly, and I saw the FINISHED message.
My phone "rebooted". Well, what I see now if the Android logo with a big " ! ", which is normal according to what I've read.
I will do more ressearch to make sure what I do if correct now: is this safe to power off/reboot at this screen? I believe it's the last step.
Click to expand...
Click to collapse
Yep. Sounds like you're good to go
shinobisoft said:
Yep. Sounds like you're good to go
Click to expand...
Click to collapse
Thanks
Holding the power button does not shut it down - pull the battery, right (It won't screw the thing right before the end ? XD ) ?
Look.. correct:
12 - Start the phone again. If you get stuck in a screen with an Android and an exclamation mark ("!") in a triangle, just unplug the USB cable and the battery. Plug the battery again and start the phone. It will take 2 to 5 minutes to reboot for the first time and the boot animation will be the stock LG (your carrier's stock animation is lost for good), but chances are your phone is intact, with all it's apps and configurations working the same as before the incident. When the boot finishes, turn off the phone again and put back the SD Card you took off on the first step.
Click to expand...
Click to collapse
I really don't want to mess anything at this point.
GameX2 said:
Thanks
Holding the power button does not shut it down - pull the battery, right (It won't screw the thing right before the end ? XD ) ?
Look.. correct:
I really don't want to mess anything at this point.
Click to expand...
Click to collapse
If KDZ Updater says it's done and your device has rebooted to recovery, then yes you can pull the battery to shut it down. You may still need to do the key presses for a factory reset, but the key combo has slipped my mind for the moment. Old age...
shinobisoft said:
If KDZ Updater says it's done and your device has rebooted to recovery, then yes you can pull the battery to shut it down. You may still need to do the key presses for a factory reset, but the key combo has slipped my mind for the moment. Old age...
Click to expand...
Click to collapse
Really nice, I have the Android logo !!
I will wait - people says it can take up to 5-15 minutes or even more - I won't shutdown on the logo.
Letting you know as soon as it's done.
***
After a while, the device booted, and I had a few messages saying it was restoring all the settings!
No data loss! Nothing (I had backed up my contacts and apps on my SD Card already - I was unsure if I would have loose my SMSs, I didn't) is lost !
Dude, seriously, thanks A BUNCH - this is ridiculous, I screwed the phone up at like 10PM yesterday, and did not went to sleep until 2AM because I couldn't fix the thing (I had access to FastBoot at first. I did a process to restore it from Fastboot, it should have worked properly, but then I only had access to the LG logo. Man, I thought I was toasted, and had to spend 50$ for a new phone, just because of a stupid mistake. Never would I thought that SAVING the ROM of my SD card would have screwed up the ROM!)...
I spent like 6 hours today trying to fix it, reinstalling the drivers over and over again... Installing a fresh new Windows XP on a machine, just so I could install everything on a new operating system to figure out the problem...
That was just plain crazy, seriously.
****BONUS****
The first thing I've noticed when I booted my phone was the BLACK notification bar
I really love black, and I once did ressearch a while ago to see if I could turn my white bar into black (I have Android 2.2.1), but no success.
I just realised I got it updated "accidentally" to Android 2.3, and so I was on Android 2.2. since 2011 (when I bought it) !
Well, nice addition, it is sexier with black
I belive it's because of the KDZ file I've used... I had a really hard time to find one, all the links were broken, from 2010, it's a old phone. I found the KDZ from Koodo, Canadian French, exactly my own.
Guess I "accidentally" upgraded to Android 2.3 then Nice addition !
I have no experience at all with fixing Android devices / ROM stuff - I'm used with Windows/Linux and others, but Android (although Android is a version of Linux) is another thing for me.
THANKS - seriously, I wouldn't have made it without your help.
YAY
GameX2 said:
Really nice, I have the Android logo !!
I will wait - people says it can take up to 5-15 minutes or even more - I won't shutdown on the logo.
Letting you know as soon as it's done.
***
After a while, the device booted, and I had a few messages saying it was restoring all the settings!
No data loss! Nothing (I had backed up my contacts and apps on my SD Card already - I was unsure if I would have loose my SMSs, I didn't) is lost !
Dude, seriously, thanks A BUNCH - this is ridiculous, I screwed the phone up at like 10PM yesterday, and did not went to sleep until 2AM because I couldn't fix the thing (I had access to FastBoot at first. I did a process to restore it from Fastboot, it should have worked properly, but then I only had access to the LG logo. Man, I thought I was toasted, and had to spend 50$ for a new phone, just because of a stupid mistake. Never would I thought that SAVING the ROM of my SD card would have screwed up the ROM!)...
I spent like 6 hours today trying to fix it, reinstalling the drivers over and over again... Installing a fresh new Windows XP on a machine, just so I could install everything on a new operating system to figure out the problem...
That was just plain crazy, seriously.
****BONUS****
The first thing I've noticed when I booted my phone was the BLACK notification bar
I really love black, and I once did ressearch a while ago to see if I could turn my white bar into black (I have Android 2.2.1), but no success.
I just realised I got it updated "accidentally" to Android 2.3, and so I was on Android 2.2. since 2011 (when I bought it) !
Well, nice addition, it is sexier with black
I belive it's because of the KDZ file I've used... I had a really hard time to find one, all the links were broken, from 2010, it's a old phone. I found the KDZ from Koodo, Canadian French, exactly my own.
Guess I "accidentally" upgraded to Android 2.3 then Nice addition !
I have no experience at all with fixing Android devices / ROM stuff - I'm used with Windows/Linux and others, but Android (although Android is a version of Linux) is another thing for me.
THANKS - seriously, I wouldn't have made it without your help.
YAY
Click to expand...
Click to collapse
Glad things worked out for ya And helping is what I'm here for
shinobisoft
shinobisoft said:
Yep. Sounds like you're good to go
Click to expand...
Click to collapse
Thanks for helping NOOBS, i appreciate that!

LG V20 H918 T-Mobile Guide from out-of-the box --> 20H, TWRP, Root

hi,
this is a guide for real helpless people, that got a V20 H918 T-Mobile out of the box and have no idea
what to do, to get TWRP and root. and since on this phone its a REAL hard odyssee if youre not a pro,
and you dont want to spend days and weeks to pick up countless small puzzlepieces to finally get all together up and running, i decided to write this guide. im no pro myself, but with countless hours of reading and try and error, misery, headaches and brainpain, i managed to get this thing running all right with working downloadmode,
newest TWRP-version and 20H oreo 8.0
so far, everything seems working good. ill play around with this version and if i encounter some crap, i will edit this guide later. sadly most "newbie-guides" here, are from pros for advanced users with decent knowledge. so when u start from zero, you dont understand half of what is written. thats why i will keep this guide as simple as possible, with some side explanations. its a lot to read and a lot to do, but this way works!
what we have before starting:
a V20 H918 t-mobile 20H oreo 8.0 with bootloader locked. simply a crippled standard phone.
what we will have after this guide:
a V20 H918 t-mobile 20H oreo 8.0 rooted, with unlocked bootloader, working downloadmode,
and newest TWRP-version.
with twrp u can backup your whole system "as it is", means u fukk up your phone, simply go to twrp-recovery, restore your backup and you have your phone up and running 100% as before all went down the drain. simply and easy. just like a new installation of win10, but in 5 minutes. u can flash custom roms, kernels etc., install all kind of stuff, no need to pay for apps anymore, get rid of obnoxious bloatware, just 100% freedom and the full potential with the V20 (which is the last phone of its kind with exchangable battery, which is why i got myself 3pcs of it )
sidenote: get yourself some extra protection foils so u can change from time to time.
also get yourself 1 or 2 10000mah powerbatterys from aliexpress (perfine) with protective rubbercase, of course, they dont have the printed-on mah, but at least a considerable amount, so that your phone will last at least 3-6 days. my V10 lastet 11 days normal usage with zerolemon powerbattery. unfortunately, these retards refuse to send to europe, and as far as i know, theyre not producing for LG phones anymore, so aliexpress/perfine is whats left.
the rubbercase gives the phone a superior protection, adds a serious amount of weight and will stick in your hand like glue. it is by far less likely to drop out of your hand like these glass-phones for imbeciles. and if it drops, the rubbercase grants excellent protection. my V10 dropped countless times, still working perfect.
but lets get to the guide now.
at first, we will unlock the bootloader. without it, you wont be able to do anything.
unfortunately, LG produces great phones (with great audio!) but terrorizes the users with their strict anti-root attitude. it seems it gets harder everytime to root and unlock the bootloader. i remember back in the days old samsung devices, had been rooted in no time. this one here cost me about 2 weeks.
on this phone, u simply cant hook it up to the pc, and unlock the bootloader with adb. it will be recognized by the pc, but as soon as u enter fastboot, nothing will happen, no command works.
the solution is a FWUL (forget windows use linux) usb-bootstick, with that u boot your
pc into a custom linux (i think) only here u have full access to your phone via fastboot and can unlock the bootloader in no time. it will not work on win10 !
- first, get rufus, a win10 tool, with that u can create boot-usb-sticks.
https://rufus.akeo.ie/
- then get the linux FWUL image (only 15GB version is still up)
https://androidfilehost.com/?w=files&flid=214529
- unzip the linux image to your c drive or your desktop.
- start rufus and select your usb-stick (it should be 30gb+ in size)
be carefull not to chose any other drive or stick (it will get erased completely), better double check.
- select the image you just unziped. (i use 7zip for unzipping)
- leave all other options as they are, press start. when dialog-box pops up, chose DD-mode !
- now waste some time, as it takes a long time to create the bootstick (in my case about 30min)
- when the stick is ready, in my case it couldnt be recognized anymore in win10, its just a raw-drive, that cant be
opened. thats allright. dont worry
- now close down all applications running and insert the created bootstick. (at this time u might consider using a
separate laptop, so you can follow this guide here at pc and use the laptop with linux running, thats what i did)
restart your pc, hit F2 or F8 oder DEL or whatever to enter bios.
select the created stick as bootpriority nr1. so that the system will use this stick as
the first bootmedium to boot from.
- u get to a screen with 9 bootoptions to chose from. chose the first one. it should now boot into linux.
when password request pops up, enter: linux
- u reach the "desktop"
connect your LG V20 H918 20H via usb-c to the pc, which has linux running, make sure that
developer options are unlocked, OEM-unlock and USB-debugging is enabled and u chose picture transfer protocol
(PTP) as transfer-protocol (also in developer options). if PTP doesnt work, try media transfer protocol.
watch your V20, at some point it will ask for confirmation of connection , click OK.
in linux, click on the up-arrow in the most downleft corner and chose "terminal emulator", which is
a pendant to windows shell/command-line.
- here you can execute the adb commands.
first, check if your V20 has been recognized by your pc with linux running.
type: adb devices
it should appear a message like:
* daemon started successfully *
LGH9182bfblablabla device
that means, that your V20 has been recognized correctly. now you can reboot it in fastboot mode.
type: adb reboot bootloader
your V20 screen goes black and seconds after, it restarts in bootloader mode ready for unlocking.
you might get a red warning that your warranty is void if bootloader is unlocked. cool.
type: fastboot oem unlock
wait for response, your bootloader is now unlocked.
u can check by typing: fastboot getvar unlocked
it should say: yes.
the bootloader is now unlocked.
now we will replace the standard recovery with twrp on the phone.
this step will be a little confusing and complicate, just follow the steps, and it will work.
since we cant flash twrp with adb, we have to use the linux bootstick again.
but before, we have to downgrade the 20H version to 10P, bcuz the next stepp will not work with 20H !
so you get the following:
DOWNLOAD H91810P KDZ FILE
https://androidfilehost.com/?w=files&flid=282709
after that, download LGUP (the LG tool for downgrading from 20H to 10P)
and uppercut (dont know what uppercut is for, i just used it instead of running LGUP directly and it worked. its supposed to recognize the phone/driver automatically)
http://downloads.codefi.re/autoprime...sh_Tools/LGUP/
and download the recent LG-usb drivers.
http://tool.cdn.gdms.lge.com/dn/down...=UW00120120425
install LGUP, uppercut and usb-drivers.
connect ur phone to pc in download mode.
turn of phone, press and hold vol.UP button and connect usb cable, small message appears, phone is now in download-mode and waiting.
now run uppercut and hope, that ur phone will be recognized. if not, think about, what kind of restrictions u did to ur system, like OnO-shutup or xpantispy (both great programs to keep win10 from calling home to scum gates) or whatever. in my case, it ONLY worked, after i reset the OnOshutup settings to recommended. so the phone get recognized correctly in LGUP (if not, try laptop or different pc), select upgrade and select the downloaded 10p KDZ file. press start or go, and wait until the procedure is finished.
now your phone is downgraded to 10p.
now we go back to linux, we connect the phone in downloadmode with the pc/laptop where linux is running,
(turn phone off, hold volUP, connect usb-c-cable with linux-pc/laptop, phone will start in download-mode.)
make sure, your laptop/pc has internetaccess.
on the linux-desktop, click on the LG folder, inside, click on LGLAF runningnaked.
a terminal-window opens.
type: git pull
type: git checkout h918-miscwrte
type: ./step1.sh
now we have flashed twrp onto downloadmode. why? i dont know, thats the way it worked for me.
we dont want twrp onto downloadmode, since twrp is a recovery. so the next step is, to flash the newest twrp version for H918 to recovery. at first, we will gather all neccessary downloads, after that, we will flash them one by one. that way, you dont have to get your micro-sd card out of your phone again and again. we put all together on the card, put the card in your phone and we are almost done. for now, have your micro-sdcard connected
with your pc and download the following:
twrp-3.4.0-1-h918.img
from
https://dl.twrp.me/h918/twrp-3.4.0-1-h918.img.html
and put this .img file on micro-sd card.
then download (and put on sd-card):
MAGISK ZIP DOWNLOAD (for root)
https://github.com/topjohnwu/Magisk/...gisk-v16.0.zip
then download original 20H firmware(and put on sd-card)
H918 20H
https://androidfilehost.com/?fid=11410963190603864639
you remember, we have now twrp on downloadmode
for restoring download-mode, download (keep on desktop or c):
H91820h_00_1115.kdz
https://lg-firmwares.com/downloads-file/17076/H91820h_00_1115
then download the firmware extractor:
https://forum.xda-developers.com/attachment.php?attachmentid=3975633&d=1482337024
ok, lets see what we have now:
we have the phone bootloader unlocked and twrp on downloadmode. we can access twrp when we start the phone in downloadmode (hold volUP, and connect usbcable, phone will start now in twrp.)
we dont want twrp on downloadmode, we want twrp as recovery. and we want to restore the original downloadmode. for that we do the following:
unfortunately, the neccessary file for flashing orignal downloadmode is not online anymore, so we have to extract it from the 20H firmware with the firmware extractor (thanks to logical gamer for his guide)
https://forum.xda-developers.com/v20/how-to/guide-h918-restore-laf-partition-t3804728
Extract WindowsLGFirmwareExtract vx.x.x.x. to your desktop, and open it up (preferably in it's own folder).
u might have to install framework 3.5 for it to run.
Select Open across from KDZ/TOT file, and browse to your KDZ (H91820h_00_1115.kdz)
you download previously and double click.
After it loads the kdz check H91820h00.dz, and click Extract KDZ.
Close and re open the program this time Click open across from DZ File in the folder where you placed WindowsLGFirmwareExtract you should see a file called H91820h00.dz Double click to open it.
Check laf_6.bin then click Extract DZ.
put this laf_6.bin on your micro-sdcard. thats your original downloadmode we will flash now.
ok, now we have our micro-sdcard with twrp, magisk, laf_6.bin and H91820h.zip.
put this mirco-sdcard in your phone. start the phone in downloadmode.
it will start in an older twrp-version. in twrp, go to install and select install img
select the twrp 3.4.0.1. img and on the following screen select "recovery"
swipe
this will flash the 3.4.0.1 version of twrp onto recovery.
then go to reboot into recovery. it will now boot into the newly flashed recovery.
then go to wipe, advanced, and select everything EXCEPT micro-sdcard!
this will totally wipe your phone (except twrp), so u can flash the 20H firmware onto a clean phone.
then, go to install, select H91820h.zip. this will flash your original oreo 8.0 firmware.
after that, go to reboot into recovery.
go to install, select magisk. install.
this will root your phone.
after that, reboot into recovery, go to install, select install img, select the laf_6.bin, and select "download"
now the original downloadmode has been restored.
now you can reboot into system, your phone will start as on day1, with new twrp on recovery and root.
i did a complete backup in twrp, so i can get back to a day0 clean install whenever needed. i will do a second backup with twrp with all the stuff installed and working ok and place this on my sd-card. so when things go bad, i always can go back to this state in no time.
congrats, your done. and me too . gonna get a cold one now.
hope this guide will help someone. in case, just drop a like/thanks/or just a short note.
its a long guide, and im no pro, if i made some mistake pls. tell here and i will correct.
thx to all the pro-guys for helping the helpless.
Hi
Im on v20 H918 firmware 10p with bootloader unlocked.
I tried with dirty cow but not works with lafsploit i have a Problem with rufus for create a bootable Linux.
Pendrive is 32 GB i followed your setting but my PC boot only in windows 7.
I succesfully unlocked a h990ds with dirty santa but for this model is not supported.
Can you help me
hi
i tried with dirtycow also, didnt work.
thats why i eventually came to the method i described.
teling by your short description, your next step would be to create a bootable linux-usb-stick, and to find a pc where it will boot correctly. the stick didnt boot on my main pc ( i dont know why, it just canceled with an error),
thats why i had to use the laptop where it worked.
Thanks for the guide man! Very funny and fun to read. I can't wait to turn mine into a 4-day brick like yours. #lastphonewithbatteryrevolution
Sadly I got the dreaded encrypted error at the end though when booting. Everything else worked fine.
After the encrypted error though I formatted and flashed LineageOS 17.1 and then magisk and still keep getting error 1. Even tried Lineage recovery and still same. I think maybe a problem with Magisk 16 itself.
Anyway it works fine just no root.
Edit: Had to flash Magisk 21 and it worked
Thanks for this tutorial. I was able to get my V20 rooted with minimal trouble. The only major trouble was finding a computer that will fully boot into Linux and the only minor issue was locating the UPPERCUT but I was able to find it. Link below.
It's probably worth mentioning that I had to rename laf_6.bin to laf_6.img in order to flash it in TWRP. Also, at the time of writing, the latest version of Magisk is 22.0 but I used Magisk v21.4 instead because it had a zip file (Magisk-v21.4.zip) available for download so that I can flash it via TWRP. Link below.
UPPERCUT link: UPPERCUT: Add Any LG Device to LGUP for TOT/KDZ Flashing (G4|G5|G6|V10|V20|MORE???) | XDA Developers Forums (xda-developers.com)
MAGISK link: Releases · topjohnwu/Magisk · GitHub
cool, glad this guide helped at least a little bit. my v20 still works great, no issues so far. as a side phone for unwanted persons, i still use my v10 with powerakku and rubbercase "brickstyle" every time i hold a regular phone from other people, it feels weird since these phones weigh like nothing, and i have to focus not to slip it out of my hand. i love my bricks
and by now, about 4 month later, reading this whole guide, to me its still strange and hard to follow. there is no way to get through this without reading everything possible about it and become familiar with all the technical terms.
I have a h918 with an unlocked bootloader and it's downgraded to 10p. The shell script fails everytime to a hash check. I've run it 4 separate times with the hashes being the same every time. So it looks like the file has been updated but the hash hasn't.
I'm coming late to the game and it seems most of the guides are out of date. I'd appreciate any help I can get.
Update: It works fine. This is by far the easiest guide to follow that I've found. Many thanks! I did have to follow xstahsie's tip.
​xstahsie​It's probably worth mentioning that I had to rename laf_6.bin to laf_6.img in order to flash it in TWRP. Also, at the time of writing, the latest version of Magisk is 22.0 but I used Magisk v21.4 instead because it had a zip file (Magisk-v21.4.zip) available for download so that I can flash it via TWRP. Link below.
I followed the guide after I rooted and installed Lineage OS 18.1. I had to remove LineageOS because it was bad with response, couldn't see hidden wifi, and just ran hot. So I followed your guide and I am in a logo bootloop and get the reminder to lock the bootloader everytime it starts. Any suggestions for getting past the bootloop?
I fixed problem by installing LAF you referenced and then LGUP to 10p kdz. However I noticed two things.
1) Whenever I boot up I have the nag message to my bootloader. Any way to address this?
2) If I try to follow steps above to install 20h, I get a decrypt message in TWRP after I flash 20h and before Magisk. Anyone see this? I didn't encrypt my storage before hand.
memnon79 said:
I fixed problem by installing LAF you referenced and then LGUP to 10p kdz. However I noticed two things.
1) Whenever I boot up I have the nag message to my bootloader. Any way to address this?
Click to expand...
Click to collapse
You're stuck with it, it's just the way it will be from now on.
memnon79 said:
2) If I try to follow steps above to install 20h, I get a decrypt message in TWRP after I flash 20h and before Magisk. Anyone see this? I didn't encrypt my storage before hand.
Click to expand...
Click to collapse
I don't remember seeing that. I probably didn't care if it did show up since it was a new install from scratch anyway.
Does encrypting the phone work after following this guide?
hey there, cant help u with the encryption thing cuz thats far beyond my knowledge. some weeks ago my phone dropped, and a tiny crack on the edge appeared. what i didnt know was that this crack is the beginning of the end of the V20. heres the story short: small crack over time leads to a bigger crack, bigger crack multiplies and u have some more cracks covering the whole screen. also the screen can pop off and hanging loose a little. in my case 4-6 weeks and i have to get out phone 2/3 which i am setting up using this guide now. fortunately i left myself a huge pyle of information on how to do this when starting at 0. over time u forget EVERYTHING u have done, so having these infos is hammering.
lucky me did i save my internal memory of phone 1/3 bcuz 30min later the screen was totally fuqqed up, no access no chance of backupping internal memory.
so heres my recommendation:
DONT drop your phone. even in my case with rubber battery case from aliexpress
(perfine "10000"mah) a 50cm drop cracked the edge of the screen. if that happens, backup your internal memory !!! (just do this on a regular base)
when ur screen gets damaged and u cant enter information or cant see anything anymore on the screen ur internal data is lost. so always have ur internal memory backuped!
and great job LG for producing such a huge pyle of ****. one small drop, screen cracked, bravo, last time i ever bought anything from lg. my V10 dropped like a 1000times, nothing, still up and running. v20, drop, 6weeks later, dead. thanks LG the customers all over the world couldnt wait to use these bull**** crackable glass-screens. great job, -1 customer.
I've tried this on two different computers with two different cables in every USB port on the machines but can't get by the Windows portion. I am using UPPERCUT as the windows box/LGUP reports no device found without it...
Of course UPPERCUT drives windows security mad as it's reported as doing bad things but as I'm using an extra win laptop that will be wiped I disable all of that....
I have three different sourced KDZ files as the one linked wasn't initially reporting any mirrors. Eventually a mirror did pop up for it but by then I had downloaded two others -- all were the same size and one of the three reported from LGUP was bad. Every attempt with the other two failed. Invalid Command response came up a few times... sometimes it just failed at around 80+ percent from the PC side which was 99% on the phone's downloader mode progress bar.
It's very frustrating.... I would like to blame windows but there seem to me plenty here with success... any other ideas?
Also... since it got so far, rebooting at this point just goes to the download mode so I might be hosed... I can force it to the fastboot mode and it is still unlocked so I've been trying to install TWRP onto recovery using the linux/android machine but when I type
fastboot flash recovery twrp.img from the directory where twrp was downloaded I get this:
sending recovery --- okay
writing recovery --- failed remote: unknown command
So... any thoughts?
aloha, at which step are u stuck exactly? did u make your phone being recognized by the win10 pc?
one thing to regard is, that a usb-CHARGING cable possibly wont work, u need a designated media/data-cable.
i had this situation before, where using many different usb cables drove me insane bcuz i simply couldnt establish a proper data connection with phone/pc, it just didnt work. it took me many hours until i realized, that all of the cables i tried were charging cables!
for me the most difficult step was having the phone being recognized by the win-pc, the rest went relatively easy.
dikkbutt said:
aloha, at which step are u stuck exactly? did u make your phone being recognized by the win10 pc?
one thing to regard is, that a usb-CHARGING cable possibly wont work, u need a designated media/data-cable.
i had this situation before, where using many different usb cables drove me insane bcuz i simply couldnt establish a proper data connection with phone/pc, it just didnt work. it took me many hours until i realized, that all of the cables i tried were charging cables!
for me the most difficult step was having the phone being recognized by the win-pc, the rest went relatively easy.
Click to expand...
Click to collapse
The phone is recognized by the PC, no problem. I do have to use UPPERCUT to get LGUP to recognize it though. The step I'm stuck at is applying the downgrade. It gets to various percentages of done-ness and fails. It got far enough that now my only options on the phone are Download mode or fastboot mode. Problem is, I can't seem to get anything to push to recovery so I assume that it's still not properly downgraded.
I've tried a few different cables and keep in mind the cable I used in the linux adb bootloader step worked fine. I don't entirely know what difference there is between a charging and data cable but I do know the main differences in the steps are a> Windows and b> size of transfer.
weird. since im no pro myself, my ideas are limited on this one. there might be some kind of loose contact at the charging port,
that when the phone is moved just a little it looses connection for a second and reconnects again, had that in the past, so try not to touch the phone at all. did u use the 10p kdz file mentioned before? did u make sure it has been downloaded correctly?
if an error occured and there are some % missing... its like faulty ram, hard to detect.
assuming, u did or did not downgrade to 10p, did u try to continue with the linux-step? ---->
---------------------------
on the linux-desktop, click on the LG folder, inside, click on LGLAF runningnaked.
a terminal-window opens.
type: git pull
type: git checkout h918-miscwrte
type: ./step1.sh
now we have flashed twrp onto downloadmode
-----------------------------
maybe uppercut/lgup displayed an error message for no reason, and the downgrade itself went through without a problem in the background.
pcs sometimes do weird things.
if nothing works, try setting up win10 and try on a virgin system. in my case, OnOshutup prevented win10 from recognizing the phone,
or try using a 3rd pc from a friend.
i was able to setup my phone 2/3 using this guide in 30min, no problems at all. (i hope i wrote down, how i solved that simlock issue.....)
no matter what causes the problemin ur case , id be interested to hear what it was.
Thanks! Rooted and Unlocked thanks to this guide!
I tried following other guides using UPPERCUT and it fails to downgrade due to Anti Roll Back. How does this relate to this guide since the last thing I want is for (by design) for it to brick the phone. I have yet to find anything specific saying an unlocked bootloader will bypass the anti rollback check.
Hi As a noob does this keep VoLTE? I have followed this guide and backgrade to 10p was perfect! VoLTE working on a phone that was "new" from china. VoLTE did not work on the 20p rom it had. Also does anyone prefer Phoenix591's h918-20g-prerooted rom to the stock one? I have read a lot but am somewhat confused by varying instruction threads. I want to use this as a daily driver. Thanks

Rootkit or just corruption with red "Your device is corrupt" message at power on?

If I'd prefer not to purchase a new phone, is there much risk a rootkit is installed? Or, is this certainly random device corruption that doesn't seem to be harming anything?
Is there anything I can do to fix the problem? (Yes, I could turn dm-verity off through adb, but that hides the error without fixing it.)
TL;DR
I have an Asus Zenfone V Verizon edition, which is the V520KL A006.
When I was using my phone a few days ago, it suddenly rebooted and since then shows:
Your device is corrupt. It can't be
trusted and may not work properly.
Visit this link on another device:
g.co/ABH
If power key is not pressed:
Your device will poweroff in 30 seconds
Click to expand...
Click to collapse
Fastboot shows:
TARGET PROJECT : V520KL
IMAGE VERSION : V5.6.0
BUILD VARIANT : USER
SECURE BOOT : enabled
DEVICE STATE : locked
Software status : Official
Click to expand...
Click to collapse
After a few days, I finally tried the power button, and it boots up just fine, and seems perfectly stable. I performed complete backups, and for what it's worth, I ran a bunch of droid virus/malware/rootkit scanners, and they found nothing. (Obviously, a good rootkit will hide itself.)
I eventually did a factory reset. This went well, but the red error message remains. So, I believe the corruption must be in a partition that a reset doesn't replace.
MORE DETAILS
I've never unlocked, rooted, or installed a custom ROM onto this phone. The only "beyond typical user" thing I'd previously done is to install adb sourced directly from Google, to be able to run Genymobile's scrcpy, which is an extremely fast open source program that allows me to remotely control my phone from my linux PC, via USB or wireless. I've been using this for many months without any issues.
This appears to mean dm-verity is detecting corruption, and is the "red" version of it which many have described as the death of their device. I believe this means the phone is able to verify the signature on the bootloader and it's able to verify the signature on the kernel, but that the kernel is finding an invalid block(s) on one of the many partitions being read right at turning on (detected because the hash for the block is not as expected.) When this happens, an I/O error is given indicating the block cannot be read.
I have been quite concerned if this might indicate a rootkit had been installed. I haven't done anything that I would suspect could let one in. After spending a lot of time learning about adb, fastboot, TWRP, and having the ultimate goal of discovering which partition has an unexpected hash, determining if this meant a rootkit or file corruption, and fixing the error, I've hit many brick walls.
For a day or two, I avoided seeing if the power button would allow it to boot, because if there was a rootkit, I didn't want it to run. I was disappointed to learn that through fastboot (specifically, I mean the fastboot PC program that connects to the droid when in fastboot mode), there is no way to do something like a full bitwise image of the internal storage, and analyze the situation in linux. Or, any type of backup whatsoever. I was frustrated to learn from another XDA thread about a lot of problems others have had rooting and/or installing TWRP on this device. I was frustrated to see there is no prebuilt version of TWRP for my device. (There is an image for the Asus ZenFone 5z 2018 ZS620KL which is very different than my Zenfone V520KL V.)
I realized with my particular device, I think, the only way I was going to take any next step required hitting the power button. (As I mentioned way above, that's when I found it appears to work fine, and I eventually did a factory reset.)
I attempted using the TWRP recovery.img posted by game #1 in that XDA thread about my device, but like he encountered, fastboot boot recovery.img doesn't work, and just reboots instead.
Without being able to extract the original recovery.img, I'm not sure that I'm willing to install his and see if it works for me. I was frustrated to find there appears to be no way to extract the original recovery.img without first having root access. All non-root methods I later found to do this didn't work. Notably, su can't run anymore through adb, and adb root can't run with a user build.
I've looked a bit at custom compiling TWRP myself, but haven't done that yet. In part, because if my version doesn't work through fastboot boot recovery.img, I'd have the same concern about overwriting the original one before getting some feedback here. Also in part, because I haven't looked enough to find how someone goes about making a BoardConfig.mk and the device tree from scratch.
Hey. I tried installing TRWP on my device, Asus Zenfone 5Z (ZS620KL) but I also got the same message. "This phone is corrupted and cannot be trusted." It also said it won't boot. Now I am stuck in Fastboot mode.
I tried installing a stock rom. Downloaded the firmware. i even downloaded python so I can extract the payload.bin file. Followed the steps but still to no avail.
Is there anyone who could help me?
If you could attach the files that I would be needing, that would be a great help.
Thanks.

New Samsung Update for A51 is Bricking phones

Good evening folks. Over the Past week, for some reason, people who downloaded the new Samsung update for A51 have had their phones bricked. FOR SOME REASON, this seems to only be happening here in South Australia. I haven't seen anywhere reporting on this issue other than local news. I have had three A51 phones come into my IT store, all with the same problem.
here is a link to one article talking about it: https://7news.com.au/technology/sam...ng-priceless-photos-vital-contacts--c-9340963
Upon installing the update, their phone will restart then it will not progress past the SAMSUNG logo. I have been able to get each and every phone into recovery mode however I when I try and reboot the phones into bootloader, they simply say "entering fast boot" and then don't progress any further.
Since I have been unable to boot the phone to bootloader I don't have many solutions in front of me, I can either factory reset the phone which has been proven to work, or I can try some alternative method. Simply put, I refuse to take the simple way out and simply factory reset the phone, I don't want my customers to go through the trouble of losing their photos.
The only real option I see is using ADB to install either a new update or new firmware, however, I have had ALOT of trouble finding the necessary software. I have been able to get ADB to detect the devices with a USB connection, so I tried installing some firmware, I found for my device. I didn't trust that this was the correct software, but it couldn't hurt to see if it worked.
Using a515fxxu5gvk6, I was able to find a website where I could download Firmware https://samfw.com/firmware/SM-A515F/TEL I don't believe this to have the correct software but it was the only option I could find that didn't require money or an account.
upon extracting the zip file and typing ADB sideload <file name> it would start the process of installing the software however, it would only install for a single second and then stop working. I would be greeted with the messages: "footer is wrong", "update package took 0.3s", and "signature failed". I believe this means I have either grabbed the wrong software or I have tried installing the software wrong
I really don't know where to find the correct software, and I don't even know if I will be able to update the phone using ADB since I never was able to enable developer tools.
I have already spent quite a few hours on this, and it's starting to drive me insane. I have gone down so many rabbit holes researching different options only to come back up empty-handed. Im lost and really don't know where to turn.
any help would be literally amazing, if someone could even point me in the right direction that's all I need. even if you tell me there is nothing that can be done and I need to factory reset the phone I can at least go to sleep knowing I god damn tried.
Well, one thing you should know is that Samsung doesn't use fastboot to flash software like many other brands. It's unfortunate to say that a lot of the guides you read online are just copy-paste of guides that do use fastboot. Adb doesn't really flash software without elevated permissions afaik.
You can flash firmware using Odin for Samsung devices. There should be plenty of guides online on how to use it, your main goal right now is figuring out how to boot into download mode for Samsung.
What I would do is try to turn the phone off completely if you've been able to boot to recovery. After that, hold both the volume buttons and while you're holding them, connect your phone to a PC. This should force the phone to boot to download mode. Read the screen as it may ask you to press VOL + to proceed.
After that, you can flash the files
AP_XXXX
BL_XXXX
CP_XXXX
HOME_CSC_XXXX (Use HOME_CSC instead of CSC_ so that the phones don't lose any data)
And after that, you should be able to flash firmware
ShaDisNX255 said:
Well, one thing you should know is that Samsung doesn't use fastboot to flash software like many other brands. It's unfortunate to say that a lot of the guides you read online are just copy-paste of guides that do use fastboot. Adb doesn't really flash software without elevated permissions afaik.
You can flash firmware using Odin for Samsung devices. There should be plenty of guides online on how to use it, your main goal right now is figuring out how to boot into download mode for Samsung.
What I would do is try to turn the phone off completely if you've been able to boot to recovery. After that, hold both the volume buttons and while you're holding them, connect your phone to a PC. This should force the phone to boot to download mode. Read the screen as it may ask you to press VOL + to proceed.
After that, you can flash the files
AP_XXXX
BL_XXXX
CP_XXXX
HOME_CSC_XXXX (Use HOME_CSC instead of CSC_ so that the phones don't lose any data)
And after that, you should be able to flash firmware
Click to expand...
Click to collapse
Thank you so much for your reply. I have spent the past few hours setting up Odin and installing the firmware.
I have run into another problem, I select all the firmware I wish to install then click start. It loads for two seconds then says "PASS!". However the phone is still stuck in a boot loop
I believe this is because I haven't turned in USB debugging, since I can't get into the phone I can't turn it on even if I want to.
Is there another option?
USB debugging isn't needed when flashing through Odin. You're most likely just missing the Samsung dev drivers. Try and installing them: https://developer.samsung.com/android-usb-driver

Categories

Resources