Bricked V20 H918 fastboot only OEM locked - LG V20 Questions & Answers

I had a v20 with a bad flashlight and bought another v20 to take parts from but since the first V20's flashlight started working again I would like to try and get this second one going.
At the initial boot it has the pinkish arrow ! and says "Your device is corrupt. It cannot be trusted and will not boot. Visit this link on another device: g.go/ABH
I try to enter download mode and the download mode screen flashes for a split second, then displays the corrupt message again. I can get into fastboot but cant push or flash any files because it is OEM locked.
Fastboot oem unlock fails
Fastboot flash recovery.img results in error: cannot determine image filename for 'recovery.img'
Any idea on how I can get this up and running or is it dead forever? Thanks!

Nope, it is is boned. Whoever you bought it from locked the bootloader while they still had a modified boot, recovery or laf partition. There is no way to unlock the bootloader since the phone won't boot. Fastboot won't allow it since OEM unlock is no longer enabled, and you can't enable it since you can't boot the phone (catch-22).
LG is the only one that can fix that phone now.
Throw it back on eBay for parts...
-- Brian

I have a h918 and after many hours on google was able to get tarp updated and get back to root status. I thought everything was finally going right but I tried to put lineage 14 on my phone and everything was good till I rebooted and after LG logo it's just a flickering black screen. I pulled battery and rebooted into twrp but I'm back to the old version with the password screen and it not reading my storage so I can't do a restore. Anybody know how to get the newer twrp img through my computer to the phone and bypass my current messed up veraion all together and how to get the working version of twrp to stay on my phone

Related

keep getting stuck trying to reflash to l29 version.

Ok I'll just rewrite this post instead of starting a new one
Drivers are installed working fine.
Phone is unlocked.
So if I trwp phone at this stage it works and I can root it.
The issue seems to be once I fastboot the 4 files to the phone phone will not boot and hence can not root it.
I've redownloaded the fastbootl29 files still no luck
Am I missing a step is the fastboot stage just sending those 4 files to the phone no unpacking/setup or anything?
Anyone in Aus want to earn some $$$
Got past that stage it's now unlocked and sitting in fastboot mode.
Now when I send the command
Fastboot flash cache c:/1/cache.img
It just says waiting for device any ideas guys
gros31 said:
Got past that stage it's now unlocked and sitting in fastboot mode.
Now when I send the command
Fastboot flash cache c:/1/cache.img
It just says waiting for device any ideas guys
Click to expand...
Click to collapse
Did you tried rebooting ur pc and ur phonte?
Got past that stage. Had to change the boot loader driver.
Load up the l29firmware in 4 parts use twrp then it won't let me root the device like it can't find it.
When trying to boot up the system it just won't boot. Now it's doing its erestore but notice it's looking for the cn firmware.

nexus 6p doesn't boot, with error when trying to unlock

Greeting,
My nexus 6P, suddenly while having a phone call, got freeze, then rebooted,
Then it keeps rebooting, showing Google “in white” while booting, then off, restart again “by itself”, and same in loop
Started the device into fastboot mode, selected recovery mode
Again same issue, restart, shows Google “in white” then restart again
Tried to follow the instructions, at [GUIDE] Unlock/Root/Flash for Nexus 6P
https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
Commands and results are here
C:\nexus6p\angler-n4f26o>adb version
Android Debug Bridge version 1.0.36
Revision 0e9850346394-android
C:\nexus6p\angler-n4f26o>adb devices
List of devices attached
<Notice no result returned>
C:\nexus6p\angler-n4f26o>fastboot devices
8XV7N16126000082 fastboot
Please note, I checked those points
ADB and fastboot, downloaded from the link provided in the guide, as well I downloaded it from Google directly
USB driver, updated with latest from google
Java, updated
And of course, I cannot run the device, to do any required configuration on it
And here is a copy of the device details
malibusa said:
Greeting,
My nexus 6P, suddenly while having a phone call, got freeze, then rebooted,
Then it keeps rebooting, showing Google “in white” while booting, then off, restart again “by itself”, and same in loop
Started the device into fastboot mode, selected recovery mode
Again same issue, restart, shows Google “in white” then restart again
Tried to follow the instructions, at [GUIDE] Unlock/Root/Flash for Nexus 6P
https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928
Commands and results are here
C:\nexus6p\angler-n4f26o>adb version
Android Debug Bridge version 1.0.36
Revision 0e9850346394-android
C:\nexus6p\angler-n4f26o>adb devices
List of devices attached
<Notice no result returned>
C:\nexus6p\angler-n4f26o>fastboot devices
8XV7N16126000082 fastboot
Please note, I checked those points
ADB and fastboot, downloaded from the link provided in the guide, as well I downloaded it from Google directly
USB driver, updated with latest from google
Java, updated
And of course, I cannot run the device, to do any required configuration on it
And here is a copy of the device details
Click to expand...
Click to collapse
If you can get into bootloader mode then maybe try fastest flashing things like stock recovery. If you manage to get stock recovery then boot into it and adb sideload a stock OTA from Google Developer website. Other than that I'm not too sure, you might need to contact Google/Huawei if that or anything else doesn't work.
---------- Post added at 08:43 PM ---------- Previous post was at 08:35 PM ----------
Okay, in bootloader mode try flashing the stock bootloader image from their OTA by typing fastboot flash bootloader (drag bootloader image here) then type fastboot reboot-bootloader. After that type fastboot flash radio (drag radio image here). Then type fastboot reboot-bootloader again. After that you can try booting up. If you are somehow able to get into recovery mode whether you can boot up normally or not then you can simply adb sideloading the stock OTA. If nothing I have said gets you into recovery or to boot up the device then you are probably screwed to be honest. Good luck
Hi,
thanks for your reply,
let me make sure, that i understood you clearly,
when i boot into bootloader, and select the recovery mode,
it get rebooted, shows Google “in white” then restart again, and again in same loop exactly as if i booted normally, not into the bootloader
as i read in other posts, i should expect the device to show me a confirmation message, or something similar,
but in my case, nothing at all, restart, and keep restarting
The options i have with bootloader are
1- Start
2- Reboot bootloader
3- Recovery mode
4- Power off
5- Barcodes
malibusa said:
Hi,
thanks for your reply,
let me make sure, that i understood you clearly,
when i boot into bootloader, and select the recovery mode,
it get rebooted, shows Google “in white” then restart again, and again in same loop exactly as if i booted normally, not into the bootloader
as i read in other posts, i should expect the device to show me a confirmation message, or something similar,
but in my case, nothing at all, restart, and keep restarting
The options i have with bootloader are
1- Start
2- Reboot bootloader
3- Recovery mode
4- Power off
5- Barcodes
Click to expand...
Click to collapse
In bootloader mode, not recovery try flashing the bootloader and radio like I said.
Hi... RMA your phone... Contact google or Huawei depending where you bought your N6P.
Check this link. A lot of people seem to be in the same situation at the moment:
https://forum.xda-developers.com/nexus-6p/help/boot-loop-death-nexus-6p-t3533528
You're in the same boat as a few of us.
Phone is stuck in a bootloop, won't go to recovery. Only boots to fastboot, but your bootloader is locked so you cannot boot/flash any zips, even official ones. That means no recovery access, which means no adb commands. ADB commands *might* be useful to reboot into EDL mode for QFIL flashing, or for wiping partitions. Problem is - if that bootloader wasn't unlocked, it's not going to be. You need to check "Allow OEM unlocking" in settings BEFORE the phone dies, otherwise you will not be able to unlock the bootloader and thereby reflash the phone.
In a perfect world - we could use EDL mode (or something) to use QFIL/MiFlash to completely rewrite the partitions and MAYBE bring the phone back to life, but the stock bootloader does not allow access to EDL. (tried the custom fastboot.exe meant to send the reboot-edl command, didn't work). If someone can figure out the JTAG pins, we might be able to move forward by purposely bricking it to QHUSB_BULK mode.
The thing is - we don't know why the phones started bootlooping in the first place. For some people, a simple cache wipe/factory reset fixes the loop and away they go. HOWEVER, those of us stuck in fastboot mode with a locked bootloader have no way to erase/wipe/format/write partitions, and even if we could, there's no guarantee it was a software issue that caused the loop in the first place.
TL/DR - You have a locked bootloader and cannot access recovery mode, this means you won't be able to flash/wipe/format partitions or images. Best bet is to contact Huawei/Google, but you'll need the original receipt. If that's not an option for you, you're gonna have to wait until the XDA geniuses out there grant us some answers.
Here's a related thread with some deep info:
https://forum.xda-developers.com/nexus-6p/general/qpst-qfil-answer-to-issues-t3455779
singularoctopi said:
You're in the same boat as a few of us.
Phone is stuck in a bootloop, won't go to recovery. Only boots to fastboot, but your bootloader is locked so you cannot boot/flash any zips, even official ones. That means no recovery access, which means no adb commands. ADB commands *might* be useful to reboot into EDL mode for QFIL flashing, or for wiping partitions. Problem is - if that bootloader wasn't unlocked, it's not going to be. You need to check "Allow OEM unlocking" in settings BEFORE the phone dies, otherwise you will not be able to unlock the bootloader and thereby reflash the phone.
In a perfect world - we could use EDL mode (or something) to use QFIL/MiFlash to completely rewrite the partitions and MAYBE bring the phone back to life, but the stock bootloader does not allow access to EDL. (tried the custom fastboot.exe meant to send the reboot-edl command, didn't work). If someone can figure out the JTAG pins, we might be able to move forward by purposely bricking it to QHUSB_BULK mode.
The thing is - we don't know why the phones started bootlooping in the first place. For some people, a simple cache wipe/factory reset fixes the loop and away they go. HOWEVER, those of us stuck in fastboot mode with a locked bootloader have no way to erase/wipe/format/write partitions, and even if we could, there's no guarantee it was a software issue that caused the loop in the first place.
TL/DR - You have a locked bootloader and cannot access recovery mode, this means you won't be able to flash/wipe/format partitions or images. Best bet is to contact Huawei/Google, but you'll need the original receipt. If that's not an option for you, you're gonna have to wait until the XDA geniuses out there grant us some answers.
Here's a related thread with some deep info:
https://forum.xda-developers.com/nexus-6p/general/qpst-qfil-answer-to-issues-t3455779
Click to expand...
Click to collapse
I'm stuck with a black screen and QFIL and XiaoMiFlash won't work. My bootloader is unlocked but I can't get to fastboot. Screen is always black but Quallcomm HS-USB QDLoader 9008 appears in device manager. No red light or vibration when connecting the phone.
vcharette said:
I'm stuck with a black screen and QFIL and XiaoMiFlash won't work. My bootloader is unlocked but I can't get to fastboot. Screen is always black but Quallcomm HS-USB QDLoader 9008 appears in device manager. No red light or vibration when connecting the phone.
Click to expand...
Click to collapse
Have you read this thread: https://forum.xda-developers.com/nexus-6p/general/howtos-debrick-nexus-6p-stuck-edl-9008-t3552838
Maybe try asking here, explaining the things you tried.

Phone bricked, Recovery Tool not working, bootloader stuck locked, help???

Hi guys...
So my OnePlus 2 was having some issues yesterday, and I flashed the stock ROM. This was completely fine and dandy, but I also wanted to put the stock recovery on it. I made sure OEM unlocking was on, went into fastboot, and typed in "fastboot oem unlock" like normal. It finished in like a tenth of a second which I thought was a little strange. The phone rebooted and I put it back into fastboot. I tried to flash the recovery and it said (remote device is locked. Cannot flash images). So at this point I was frustrated. I went into TWRP and installed the SuperSU binary. Then, I went to the Play Store, downloaded Flashify, and flashed the recovery onto my phone. I restarted my phone.... and bam. Recovery wouldn't work anymore. And then when I tried to boot into normal Android it still wouldn't work, just stuck on the OnePlus and Android screen, as if there was no /system/ partition. I can still get it into Fastboot, and I put it in EDL mode and installed the Qualcomm 9008 driver, and flashed OxygenOS 3.0.2 through the MSM downloader from https://forums.oneplus.net/threads/updated-28-06-2016-mega-unbrick-guide-for-a-hard-bricked-oneplus-2.347607/ and the MSM downloader just gave me an error that, in garbage text, said something about Sahara and Firehouse or something like that. I did get it to go successfully by downloading a different recovery package (I believe it was Color OS 2.0) but I have a ONE A2005 and I belive that was meant for ONE A2001 and it caused my phone to constantly flash rapidly at the Oneplus and Android screen (it would start to boot then immediately shut off). Fastboot still works but it still says the bootloader is locked so I can't really do anything. Any help would be much appreciated!
Jack
Update: I finally got Recovery to work. However, it still gets stuck on the OnePlus & Android screen, even after sideloading a stock ROM and installing it via the stock recovery. I fear my boot.img is corrupted. Does anyone happen to know where I can find a stock ROM that comes with recovery.img, boot.img, system.img, et cetera?
Actually, nevermind. It says oem unlock is disabled, and I can't even get into the OS to enable it.
superblox02 said:
Actually, nevermind. It says oem unlock is disabled, and I can't even get into the OS to enable it.
Click to expand...
Click to collapse
You should be able to unlock it in fastboot or adb
OEM unlock or something like that
Check this thread https://forums.oneplus.net/threads/...wrp-root-nandroid-efs-backup-and-more.345478/

Unlock Bootloader Just Hangs...

Just recently purchased a "broken" Nexus 10 off ebay for nearly nothing. Seller showed that it just hangs at "Google" upon startup. Bought it as a project to see what I could do...
So, after a few hours of trying everything I could with NRT I am unable to unlock the bootloader. When I press vol + and then the power button to select it to unlock, it just stays there...it doesn't do anything and freezes until I hard reset it. No love lost if this is a bricked device, I'd only be out $20. Anyone have any ideas? Thanks ahead of time!
Slight update after playing with it for a while this morning... I was able to get it to show the TWRP splash screen, before it fully loads TWRP, in NRT. But, as always it just hangs there while NRT is "Rebooting your device into bootloader mode..." I'm starting to think it has a bad emmc? I'm not too well versed on hardware, but I've tried nearly every option possible I think. Anyone have any other ideas?
CKrzacz said:
Slight update after playing with it for a while this morning... I was able to get it to show the TWRP splash screen, before it fully loads TWRP, in NRT. But, as always it just hangs there while NRT is "Rebooting your device into bootloader mode..." I'm starting to think it has a bad emmc? I'm not too well versed on hardware, but I've tried nearly every option possible I think. Anyone have any other ideas?
Click to expand...
Click to collapse
If you are using the official TWRP app you then you should use the customized version. The omnirom thread got one you can download: https://forum.xda-developers.com/nexus-10/orig-development/rom-t3045066
Direct link: https://androidfilehost.com/?w=files&flid=205355
So I used NRT to attempt to flash 3.1.1 onto the tablet, it froze on the TWRP flash screen showing version 3.0.2-0. I'm wondering now if the recovery that was on it before I purchased went corrupt? I
Update: Did a manual "fastboot boot "PATH TO 3.1.1-0-manta.img" and same thing....it just gets to the splash screen and freezes....
Another update.... "adb devices" shows it in recovery....yet it just shows the splash screen still. This makes NO sense to me lol.... This is the first I've been able to get adb to recognize it, but the bootloader is locked, nor will it unlock (it freezes), so I feel that it's useless that I've got it this far and yet nothing. Ugh...
Update the bootloader (from google's official images) to latest. then TWRP will boot
Pushing "perm-recovery-signed.zip" to your device:
adb push "C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data\Root_Files\perm-recovery-signed.zip" "/sdcard/!ReadyToFlash/Root_Files/perm-recovery-signed.zip"
100% /sdcard/!ReadyToFlash/Root_Files/perm-recovery-signed.zip
Hash verifying file transfer:
f63500d8c095c0e749cd78851ba409f8 = Local Hash
f63500d8c095c0e749cd78851ba409f8 = Device hash
+ Verified!
Pushing "openrecoveryscript" to your device:
adb push "C:\Program Files (x86)\WugFresh Development\Nexus Root Toolkit\data\Root_Files\openrecoveryscript" "/cache/recovery/openrecoveryscript"
100% /cache/recovery/openrecoveryscript
Hash verifying file transfer:
7c02d031e244df4f5a47a7cd3297e53f = Local Hash
7c02d031e244df4f5a47a7cd3297e53f = Device hash
+ Verified!
Rebooting your device into bootloader mode...
adb reboot bootloader
Here's the NRT log. It just hangs with the TWRP splash screen still (after reinstalling the bootloader, then reinstalling TWRP) and won't go back into bootloader. When I hard reboot it, it's back to square one with not being able to boot into recovery (locks up at google logo) or allow oem unlock to process (locks up on the unlock screen when I press power button on "yes").
I know this thread is a few years old, but have you been able to solve the problem? I'd like to use my old Nexus 10 as a WiFi picture frame, but it is bricked in the same way as yours. I cannot get past the google splash screen, bootloader unlock won't work even though it is recognized via fastboot. Flashed latest image and bootloader from google, but did not change anything.

Need Help after Unexpected OTA Update

Carrier unlocked XT1687, bootloader unlocked and with rooted stock potter 25.137.35.
I never allowed the Motorola Security Update to load, I 'd been tapping "Maybe Later" for a week.
On Friday I noticed the "Maybe Later" option wasn't there, so I simply "backed-out".
Saturday morning, the update was shown as completed. WTH??
I did still have root (was able to use root permission apps) so I rebooted but it kept going into TWRP recovery.
Using "start" would allow the phone to boot normally.
I tried a few non-destructive things, no joy.
I finally reflashed the stock potter. As a phone it's working OK
But now..
adb and fastboot seem to function OK, but when I try reboot bootloader commands I get "bad boot" state.
I also noticed the OEM unlock in dev options is gray-out, it may have been that way after the bootloader unlock, I just never noticed?
When I boot into recovery, TWRP 3.2.x main screen just sits there no way past it.
I'm now in way over my head,
Any help/advice is appreciated.
drk
Flash stock image again thats all
When I flashed the stock, I got the bootloader image signed with key bad key.
When I tried flashing recovery twrp.img (3.2.1-potter) I got image not signed or corrupt
I didn't expect to see bad key when flashing stock.
And Oops I forgot it will show bad or corrupt no matter.
All fixed.
Thank You

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