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So, here's the story: I wanted to root my d850 on LP version D85021R, Tried all methods posted here, including this, this, and this. None worked. So I decided to downgrade to KK using tot/kdz method by hyelton. Downloaded LGD850AT-01-V10d-310-410-JUN-19-2014+0.tot file and LG flash tool 1.8.x and flashed the tot file. Progress went above 85% and then phone rebooted, but never came back to life; super-bricked, no led, no boot screen, no download mode, no recovery mode, NOTHING! except that it identified as QHUSB_BULK in Win7, which upon installation of drivers turned to qhsusb_dload 9008. Tried all unbricking methods including Board Diag, Flashtool ,etc. none worked. So I took it to a repair guy, who probably used octopus box to copy image from another g3 (at least that's what I think, he would not let me see but i sort of glanced over). After copying that image to my g3, it turned back to life, i.e., boot screen appeared and download mode/recovery mode worked, but it was in a boot loop. however, that guy also tried flashing V10D using flashtool, and same thing happened, i.e., super-brick again. After a day of trying he gave up on it but was kind enough to give it back half alive. So now boot screen appears, download mode works, gets recognized as LGE Mobile USB Serial Port, and LGE Android MTP Device with a yellow triangle. I cannot access fastboot mode due to locked bootloader, or else I would have tried flashing partition images through fastboot, as bootloader and boot partitions are intact, so I would not touch them but could try flashing other partitions. LG Flashtool flashes the whole package so the boot sector also gets over written, which somehow is not compatible with stock rom. One thing which I have not mentioned is that I did not buy it new but refurb one, so may be some part was changed, but which one, no idea. I tried to get it recognized it in linux, but does not work; shows up as libmtp-1-1 in /dev, which is not mountable. However I was able to pullout one interesting fact, which might give some hint. dmesgs shows a serial number for this device which starts as LGD855xxxxxxx, whereas the serial number printed on the back is different, where it shows as d850 and serial number is also different, i.e., 406KPXVxxxxxx.
Now I am out of options. Can someone please suggest what else to do. Also, can someone confirm that the serial number shown in dmesgs when connected to USB port, starting with LGD855xxxxxx can be a d850?
Any help is welcome
First off when flashing almost every time it'll fail at 85%. That's normal. Anything after80% is just rebooting of the phone.
Now what your having is not normal. Maybe whatever the repair shop did changed the serial? And your issue usually means your bricked completely sadly.
Before your downgraded, was your phone booting normally or did the root do something to make it originally boot loop before trying to downgrade ?
Sent from my iPhone using Tapatalk
Thanks for replying hyelton. I fully understand that and also that rebooting should bring the phone to blue reset screen, but it didn't. Instead it died.
The serial number and IEMI fortunately are intact, and are read by firmware when present. Sadly I tried to flash the firmware again through Board DL option, but failed again, so back to QLoader 9800 mode. On WinXP, smart boot diagnostics recognized it and proceeded to flash boot/recovery, but sadly the accompanied AP_Chip file neither has D850 nor D855 Smart_Boot.bin files. So I flashed EUR xxxx.xxx version. Phone still dead, but no Qloader 9800 mode, instead Android Phone device started showing up, which had no supported drivers. After some effort, Windows 7 download drivers and it got recognized as AlCatel Android Phone, lol! No adb and fastboot in Windows, and no Serial communication was possible. I tried linux and there fastboot was showing a device without id, like ??????????, but it did allow me to flash individual mbn paritions extracted from D850 tot to their respective partition, but I discovered I cannot flash through fastboot files larger than 2GB, so no system and no userdata; those were erased only. Upon reboot and return to windows, phone is still dead (without any life) and back to Qloader 9800 mode.
So now I'm stuck due to lack of firmware files. I am afraid to flash a boot or recovery partition extracted from any other firmware, but can try D855 since it worked partially to bring download/recovery partitions and LG logo was also displayed upon turning on. I think it even booted basic kernel in download mode, because I was able to send reboot command through Send_Command.exe and it rebooted. So scripting was also a possible option, but not anymore.
Is the partition layout of D850 and D855 available somewhere? I tried to find but could only find for D851. If someone having these variants is willing to help, I'll post the commands to get partitions layout, or even partition images could be created using dd command if phone is rooted.
To your question, no, the rooting methods did nothing. It was working normal. But somehow I came across a lot of threads that suggested hassle-free downgrading to KK for rooting, and pointed to your guide which surely is hassle-free but not for a troubled phone like mine
BTW, I do have Flashtool log files for original downgrade and then reflashing yesterday. If someone wants to take a look...
Further development: Today I visited the main mobile market in my city, and first went to same shop from where I bought this set. They had a number of other sets in the same batch, so I copied partition tables info and prop files from each device. Also, I had to buy the same set for a friend. I have asked him to lend it over to me for weekend. Now, first I'll try to find the rom versions installed on these sets and see what I can do.
Secondly, is there a way I can copy the whole emmc partitions from alive phone to dead phone? The dead phone can be accessed on serial port. I know I can get partition dumps, but how to write them on bricked phone, that is the question. There must be a software that can access emmc through phone ports and clone it. Help please!
unikorn74 said:
Further development: Today I visited the main mobile market in my city, and first went to same shop from where I bought this set. They had a number of other sets in the same batch, so I copied partition tables info and prop files from each device. Also, I had to buy the same set for a friend. I have asked him to lend it over to me for weekend. Now, first I'll try to find the rom versions installed on these sets and see what I can do.
Secondly, is there a way I can copy the whole emmc partitions from alive phone to dead phone? The dead phone can be accessed on serial port. I know I can get partition dumps, but how to write them on bricked phone, that is the question. There must be a software that can access emmc through phone ports and clone it. Help please!
Click to expand...
Click to collapse
Flash it to D855 Lollipop version via octopus than write DUMP
It does work, indeed. We did it together, didn't we, aamszia?
To elaborate further, Aamir helped me out by writing D855 bootloader through octopus box. That was done before but flashing a KK rom again bricked it. Only this time, he flashed a d855 lollipop kdz rom (v20g, if I remember correctly). That made it functional; everything worked, except radio. Flashing a d850 LP radio would not work; flashing a KK radio would brick it. So I took a dump of mmcblk0 from a fully functioning, rooted, recovery flashed LP d850, via terminal using dd command (I chose to write only first 4gb or so due to smaller sdcard I had. That covered all partitions except cache and userdata, which were not needed anyway). Then I wrote back the dump on the bricked d850 using dd command from terminal. I tried flashing TWRP on it first, but somehow it did not work, and gave secure bootloader error. So I had to do it via terminal. I knew once it starts writing, the system would become unstable due to overwriting of partition table, kernel, system, and stuff, but I had to give it a try, and it worked! Screen went off immediately, but I touched it again after half an hour; pulled out and reinserted the battery; tried recovery and there it was. Rest was easy. Just formatted cache and data, and my phone was back to life.
i rooted my phone and i wanted to switch rom for it,i flashed h850 rom rebooted device and it wont boot...i figured im on qualcomm 9008 mode in my computer so what can i do?
please please help me!!
thanks in advance..
Put it into download mode and restore the device via LGUP+TOT file, or if you made a backup, just reboot into recovery and restore your backup...
Dark Nightmare said:
Put it into download mode and restore the device via LGUP+TOT file, or if you made a backup, just reboot into recovery and restore your backup...
Click to expand...
Click to collapse
You probably didnt understand me well.. I cant put it in any mode...it wont turn on on any condition..
You said you rebooted twice, that tells me the device powers on, therefore, by doing a battery pull, holding the recovery or download mode button combos and powering up should get you into the desired mode. IF its not powering on at all:
1. Try charging the battery externally and try again.
2. See if the device is being recognized by a pc, if so there is hope that resting the device and trying again may work or we can see what mode it is in via adb/fastboot to get the device into a recoverable mode.
So....
Dark Nightmare said:
You said you rebooted twice, that tells me the device powers on, therefore, by doing a battery pull, holding the recovery or download mode button combos and powering up should get you into the desired mode. IF its not powering on at all:
1. Try charging the battery externally and try again.
2. See if the device is being recognized by a pc, if so there is hope that resting the device and trying again may work or we can see what mode it is in via adb/fastboot to get the device into a recoverable mode.
So....
Click to expand...
Click to collapse
The computer recognizes my device as qualcomm 9008
I have the same problem. My phone is dead only shows Qualcomm 9008.
Silly... If it's not for your phone why would you flash it??? Might have to wait for the official kdz from lg assuming you can some how get it into download mode. Or simply use your insurance for a new device. Expensive lesson learned
Maybe you can try the lg mobile support tool, since a tot file is available LG may have the stock kdz file available now, so try the recovery option for the mobile support tool.
Pretty sure that Qualcomm message thing is the true hard brick...
Sent from my pretty nifty brand new LG V10
This might sound stupid and it is usually for devices which have problems turning on or similar. I think is better to try anything that not trying all the options.
Why dont you try removing the battery, then close the module part without the battery. Press and hold the power button for at least 30 seconds. then release it. then put the batttery back on and try to make it boot into download mode. Chances are slim but the chance still there. This worked with my Samsung galaxy s5 after i flashed a rom that claimed to be for all models including the tmobile version when it clearly was for the g900f version . and i decided to try what i have done with other types of electronics and it worked.
Just tried on my phone. No go. Still dead. Trying lg repair. Hope I can get it fixed and not cost a arm and a leg.
Here is a guide to recover from 9008 mode
Here is a tool to extract kdz from tot
I've not read through these all the way, but if the PC sees it at all, it's not truly bricked... It might just be a pain in the ... to get it fixed. Those 2 links are good starting points for you. I hope you get this resolved.
I have the same error... My LG g5 H860 no turn on only connect in the PC on mode Qualcomm HS-USB QDLoader 9800.
Any idea or solution to resolve this?
Thx
BR
Dark Nightmare said:
Put it into download mode and restore the device via LGUP+TOT file, or if you made a backup, just reboot into recovery and restore your backup...
Click to expand...
Click to collapse
same issue just that my lgg5 tm is stuck on the firmware update for trying to root via lgup/tot file now not even lg bridge reads the phone it wants to then it says can not odetect nothin has worked
Hi there,
Today i've received this tablet. All good and dandy until it notified me it has an update so obviously i've gone and do the update. Surprise.. after reboot, update installment and so on the device won't boot anymore at all, and recover mode doesn't work to enter.
I've found official ROM package on their site:
ftp.vonino.org/public/Firmware/Vonino_Tablets/Pluri%20Q8/Orange%20Version/Android%206.0/
Tablet can connect to the PC, but it isn't recognized because "some drivers" missing. How can i install this ROM on the tablet from my pc ?
Thank you.
Hi,
I can't find anything about it on xda or anywhere. You'll need to contact the manufacturer for drivers and instructions on flashing their firmware.
Good luck!
After i tried like almost the entire day i got the tablet in rescue mode or fastboot mode..
I've wiped/data or factory reset and the same happens... it stays in a loop when boot at logo.
I've let it to do so until the battery went dead from 100% and still the same.
I have official ROM but can't install it at all. I think the bootloader is locked?! And it doesnt even unlock it when using some fastboot commands
Also can't install nothing from SD card and when tryin to use ADB the PC can't see the device, but when using fastboot I can work on it.
In rescue mode i've done some root integrity check and at the end of the check some /system files are modified. I believe this is causing the entire problem.
denede said:
After i tried like almost the entire day i got the tablet in rescue mode or fastboot mode..
I've wiped/data or factory reset and the same happens... it stays in a loop when boot at logo.
I've let it to do so until the battery went dead from 100% and still the same.
I have official ROM but can't install it at all. I think the bootloader is locked?! And it doesnt even unlock it when using some fastboot commands
Also can't install nothing from SD card and when tryin to use ADB the PC can't see the device, but when using fastboot I can work on it.
In rescue mode i've done some root integrity check and at the end of the check some /system files are modified. I believe this is causing the entire problem.
Click to expand...
Click to collapse
Typically, on devices I know of, it's fastboot that you would use to flash factory images. So you should be good there. But again, I don't know if that is how your device works too. And it would also typically not matter what's been altered on your device, system wise, you would simply flash the appropriate images with fastboot.
So I'd still say you need to determine the correct procedure to flash the files you got from their site. Perhaps there site has instructions? Or a support number for help of its not working as it should?
I've talked with the support. They gave me a link with an official ROM, a different one that the one that was from the site. But they didn't even told how to use it, LOL.
Have the damn files and don't know what to do with them, OMG.
I've placed the zip archive on SD card and tried to use the option from rescue mode with 'update via sd card". The zip archive is visible but after i select it says Installation aborted :|
I've googled around and maybe my tablet needs to be at over 50% power... but it was plugged into the wall it should've worked.
edit: 100% and no good...
edit2: they sent me another e-mail with a pdf file in which it is explained how to flash their device.
Code:
Boot failed. Press POWER KEY to retry.
Your device didn't start up successfully.
Follow these instructions if the failure cannot be recovered after retrying.
If this is a Verizon device, please use the Software Repair Assistant on computer to repair your device. Connect your device to your computer to get the Software Repair Assistant.
If this is not a Verizon device or Software Repair Assistant did not help for any reason, please contact customer care for furthur assistant.
AP Flashboot Flash Mode ( Secure)
No bootable A/B slot
Failed to boot Linux, falling back to fastboot
Fastboot Reason: Fall-through from normal boot mode
Hi everyone,
I've wanted to root my Android phone for a while now, so I decided to do it these holidays, following instructions on getdroidtips ( How to Install Lineage OS 17.1 for Moto G8 Plus | Android 10 [GSI treble] (getdroidtips.com) ). I couldn't boot into TWRP recovery mode for some reason, (maybe it didn't install properly) so I tried to install Havoc OS using ADB. My phone then rebooted several times and then gave an error message, saying I could either try rebooting again or factory reset. I chose factory reset and went through the whole process again twice, the third time with Lineage OS. It then gave a different error message (in the code block). I can use the volume keys like in the bootloader, but couldn't get it to boot. I also can't access the phone over ADB.
This was my first time messing with Android beyond basic ADB commands, so I didn't really know what I was doing. I might have messed up the instructions or made some other mistake. All of my data is backed up, so all I'm hoping for is to either boot Lineage OS or somehow flash the stock ROM again.
Does anyone know how to solve this issue?
BTW I am not on Verizon.
I've run into a few of these situations. I also tried this version of Android as a Custom Rom and got a Boot Loop
I had to use TWRP to reinstall my TWRP backup.
Just in case you don't have TWRP or TWRP access for some strange reason you could try this:
I have a moto g8 plus xt2019-2
Motorola_Moto_G8_Plus_XT2019-2_DOHA_RETBR_9.0_PPI29.65-43_(MobileGuru4.com)
Motorola Flash File For All Model (Stock ROM) - Mobile Guru4
Download Motorola Flash File for all Motorola models. Here all Stock ROM and firmware files given for Motorola phones are official original files
www.mobileguru4.com
Search for this on google, when you find it download it. Then inside the zip file once you unzip it find the directory that is labeled - firmware
Inside that directory there's a file labeled "flashfile.bat" This setup uses ADB with ADB Fastboot on the phone. I assume you know how to get ADB Fastboot on your phone. When you execute the above file you will see it working in the command prompt on your computer. Let it run. It will not show anything on your phone until your phone reboots. This is what I use as a DISASTER BACKUP in case TWRP is unusable or in any way I'm unable to get to it.
I hope this helps you, it worked on my phone.
Thanks for the reply. Unfortunately, I can't try it because I've already sent the phone away to be repaired. The repair company said they would have to send it away when I originally emailed them. The repair company had a no fix no fee arrangement, so if they can't do it I'll try using fastboot. Hopefully that will happen and I won't have to pay $200.
sorry my english, i have the same problem and already try everything, rsa always fails and rsd lite does not recognize my device in windows 10, i tried to short the motherboard and it didn't work, i am seriously thinking about changing the motherboard or sell the parts
Hi,
so with this Tutorial i was able to unlock the bootloader of the Blackview tab 8.
but i just could not find any way to flash magisk.
- "fastboot boot patched_img.img" and "fastboot flash boot patched_img.img" gave me "fastboot: error: Couldn't parse partition size '0x'"
- "fastboot flash:raw boot boot.img" was able to flash the patched_boot.img (a twrp i tried to port as well), but then i was stuck at blackview logo (SOFTBRICK)
- SPD Research Tool R24.0.0003 was able to flash patched_boot.img, but same stuck at logo (SOFTBRICK)
The only way i was able to unbrick it, involved opening back cover and disconnecting the battery and reconnecting it again.
then put research tool to download mode and flash stock img
I'm hoping for some advices, what i could try to get magisk flashed
- Tab8 Firmware (DK_SC9863A_P30_5G_10.0_Tab8_EEA_20201022_V1.0)
- SPD Research Tool R24 (there are 2 other tools but afaik research tool is the only one, where i can choose which partitions to flash)
best regards
Oxo
Hi,
I've got a tab8 too (eu) and I have the boot_patched.img generated by magisk manager but I can't unlock the bootloader. I used the tuto you gave (your first link) too.
Could you explain what you did to successfully unlock your bootloader please?
Thanx
Bests regards
I was trying to backup the stock ROM of this same tablet, however i must have incorrectly installed SPD drivers or somehow had uninstalled them, Research Download said "failed user cancel", then boom when i tried to switch it on it was not turning on nor charging. I have been trying to charge it for about 4 days, no dice, it does not charge still, nor turning on.
I must have soft bricked it, because it gets detected by the PC as "SPRD U2S Diag (COM5)", but when i try to flash Stock ROM i downloaded it either says " failed user cancel" or gets stuck at "checking baudrate".
I don't know what to do, would opening it and test point it make a difference? Because some guy on Youtube was able to flash his SPD phone after test pointing it, as it was facing "failed user cancel"
Another question, which key combinations did you use when flashing your Tab 8? Vol - and Power or?
nr0000000 said:
Hi,
I've got a tab8 too (eu) and I have the boot_patched.img generated by magisk manager but I can't unlock the bootloader. I used the tuto you gave (your first link) too.
Could you explain what you did to successfully unlock your bootloader please?
Thanx
Bests regards
Click to expand...
Click to collapse
I did it like described in the tutorial i linked. did you use linux? maybe in a VM or so, to use the .sh script. AFAIK it doesnt work with windows
also dont forget to activate "OEM unlocking" in dev options
StormChaser1337 said:
I was trying to backup the stock ROM of this same tablet, however i must have incorrectly installed SPD drivers or somehow had uninstalled them, Research Download said "failed user cancel", then boom when i tried to switch it on it was not turning on nor charging. I have been trying to charge it for about 4 days, no dice, it does not charge still, nor turning on.
I must have soft bricked it, because it gets detected by the PC as "SPRD U2S Diag (COM5)", but when i try to flash Stock ROM i downloaded it either says " failed user cancel" or gets stuck at "checking baudrate".
I don't know what to do, would opening it and test point it make a difference? Because some guy on Youtube was able to flash his SPD phone after test pointing it, as it was facing "failed user cancel"
Another question, which key combinations did you use when flashing your Tab 8? Vol - and Power or?
Click to expand...
Click to collapse
i dont know about test point actually. you can open it pretty easily and just disconnect battery. then connect again, use sdp tool and start the flash process, then press vol- and hold it while pluging in usb cable. thats what i do, if im stuck and cant do anything else.
regarding button combination, i'm not sure. usually i use adb reboot bootloader.
Also for the Blackview Tab 8 you need to extract keys from your vbmeta.img and sign it differently, also every other .img you wanna flash, like patched magisk boot.img. i successfully rooted mine some time ago, but i flashed some magisk modules and something went wrong and i ended up bootlooping. now im trying to root again.
somehow i cant flash the vbmeta.img. i dont remember if i did anything different last time.
all the stuff i did to get it rooted, i have taken from that hovatek forum.
edit: uploaded Stock Rom Images and stuff like for example a magsik patched boot image, which got repacked with android image kitchen then signed and repacked again with avbtool here
PS: dont have time to invest to this atm, also i just read that there was a update sometime this year which i didnt get, so maybe that changed some stuff.
I was considering buying this Blackview tablet and before I ordered it I got in touch with the Blackview home people in Hong Kong. They were extremely UNHELPFUL AND EVEN RUDE (not unusual for the chinese). As far as I am concerned this mob does not deserve to be supported and having a product that is so difficult to do any tinkering with precludes it from my list for sure. It is so time for consumers to DEMAND that any product that does not give explicit instructions as to unlocking and flashing is not supported. Why is it not possible in this day and age for this to happen. OK I know why but you get my meaning.