Develop Bugs

Your device is corrupt. It can't be trusted and will not boot

Hi friends
Please give me suggestion or guide how to solve problem about handset booting after mistakenly handset OEM locked through fastboot
It enter to fastboot mode but not going to recovery mode or restart in system mode
Is there any solution
If yes then please help me

fastboot oem unlock ?

Actually ive unlocked OEM and install twrp recovery and installed freedom os
Then while checking OEM status ive enter command fastboot OEM lock
It ask me I've pressed yes after that the massage is came after restart as your device is corrupt it can't be trusted and will not boot
After that it enter to fastboot but not going to recovery mode or system
While type command in fastboot OEM unlock massege come failed

This happens because your bootloader has been unlocked at one time. There is no going back, even if you use "fastboot oem lock" later.
Edit: Just noticed the part about your device will not boot. You need to find the system image and flash it. I read somewhere today that OnePlus just released the system image for 4.7.4.

Can you unlock again?

@op, IMHO the best possible solution will be to flash stock rom image and stock recovery if required but I think when you flash stock image it will also flash stock recovery.

When you turn off the phone and boot it with VOLUME UP plus POWER, this should send you straight away to Fastboot. Try if you can unlock again, otherwise... bad luck - you'll need a restore session with 1+.

the Doctor said:
This happens because your bootloader has been unlocked at one time. There is no going back, even if you use "fastboot oem lock" later.
Click to expand...
Click to collapse
Not to be unrespectful, but you're wrong, it is absolutely possible to relock bootloader without problems.
IMHO, trouble happened because he had a custom rom onboard... and a locked bootloader does exactly its purpose... to not boot insecure firmware!

jonsat said:
Not to be unrespectful, but you're wrong, it is absolutely possible to relock bootloader without problems.
IMHO, trouble happened because he had a custom rom onboard... and a locked bootloader does exactly its purpose... to not boot insecure firmware!
Click to expand...
Click to collapse
After looking into it further, I agree with you. That's what I get for having a bootloader-locked Samsung device for two years. I must be getting rusty!
Yes, the bootloader can be re-locked. There may still be a tamper flag as with previous OnePlus devices. But having a locked bootloader with non-OEM software would likely cause the problem he is describing. So, he needs to flash the factory image from bootloader.

I've requested to 1+support for restore remote session
Support send me file link and l2 will assist me in within 2 days

DO NOT RELOCK BOOTLOADER UNLESS U READ UP FIRST!!!!!, its worth just waiting the few seconds after reboot, then to go and try to relock the bootloader

I've restored oneplus 5t through remote session
it become as company new mobile
After that OEM also unlock
Thanks oneplus supports.

kaihansen2001 said:
Can you unlock again?
Click to expand...
Click to collapse
Yes ive unlock Bootloader

Rdxsammm said:
I've restored oneplus 5t through remote session
it become as company new mobile
After that OEM also unlock
Thanks oneplus supports.
Click to expand...
Click to collapse
How did you do it? can you guide me too?

sam razzy said:
How did you do it? can you guide me too?
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Click to collapse
Have you dumpling files and MSM download tools for oneplus 5t
If you have then restore op5t after success it work as new mobile.
But you can get basic dumpling file from oneplus support remote session.
You have to create ticket and chat with oneplus support

oneplus 5 device corrupt and it cant be trusted and will not bootr

hrushi0130 said:
oneplus 5 device corrupt and it cant be trusted and will not bootr
Click to expand...
Click to collapse
Did you by any chance re-lock the bootloader with a custom recovery and custom ROM flashed?

It's because of custom recovery.
Just flash stock recovery image before locking the bootloader.
This fixed for me.

Rdxsammm said:
Actually ive unlocked OEM and install twrp recovery and installed freedom os
Then while checking OEM status ive enter command fastboot OEM lock
It ask me I've pressed yes after that the massage is came after restart as your device is corrupt it can't be trusted and will not boot
After that it enter to fastboot but not going to recovery mode or system
While type command in fastboot OEM unlock massege come failed
Click to expand...
Click to collapse
You unlocked bootloader, flashed rom (custom) and relocked bootloader? Never lock your bootloader on a custom rom! Just enter fastboot again flash twrp (manual/force reboot recovery), copy internal storage to pc then wipe/format everything. Format data. Factory reset then flash latest official rom and reboot

How to Lock Bootloader?

Solution to Lock Bootloader:- Go to Fastboot Mode,
Type :
fastboot oem relock (Bootloader unlock code without bracket)
I finally submitted my device to service centre
Needed a help in locking bootloader of Honor 8 Pro Indian Variant DUK- L09 C675.
I flashed Latest Oreo update through TWRP with the help of DUK_FullOTA_ROM_flasher method but the bootloader is still unlocked....
If anyone could help me with this as I have to visit service centre related to mic issue.

Connect to your computer, restart to fastboot mode and use "fastboot oem lock". Make sure you have a stock recovery and ROM on it, because the locked bootloader will not boot anything else.

aserraric said:
Connect to your computer, restart to fastboot mode and use "fastboot oem lock". Make sure you have a stock recovery and ROM on it, because the locked bootloader will not boot anything else.
Click to expand...
Click to collapse
Relocking bootloader by this method will erase all data?

arunpkrt said:
Relocking bootloader by this method will erase all data?
Click to expand...
Click to collapse
No, it won't. But you should still have a backup whenever you mess with fastboot.

OEM Locked, and Device is corrupt. Unfixable?

So, long story short I recently decided to try and root my oneplus7t I unfortunately made some mistakes and somehow corrupted some files. I read elsewhere in the forum that I could download the stock rom which I did and then use flash-all and that would allow me to go back to the factory settings so I could lock the oem and just go back to normal because I was tired of the headache. Unfortunately, after using flash-all I locked the oem thinking everything should be stock and it would work properly. But it says device is corrupt and trying to unlock the oem says oem unlocking is disabled.
So did I just completely brick my phone? I don't know of anyway to fix it at this point :/.

kschmitz4 said:
So, long story short I recently decided to try and root my oneplus7t I unfortunately made some mistakes and somehow corrupted some files. I read elsewhere in the forum that I could download the stock rom which I did and then use flash-all and that would allow me to go back to the factory settings so I could lock the oem and just go back to normal because I was tired of the headache. Unfortunately, after using flash-all I locked the oem thinking everything should be stock and it would work properly. But it says device is corrupt and trying to unlock the oem says oem unlocking is disabled.
So did I just completely brick my phone? I don't know of anyway to fix it at this point :/.
Click to expand...
Click to collapse
Can you still boot into bootloader via the hardware keys, whatever that combo is on the 7t?
Boot to bootloader or recovery and factory reset it or so.

Josh McGrath said:
Can you still boot into bootloader via the hardware keys, whatever that combo is on the 7t?
Boot to bootloader or recovery and factory reset it or so.
Click to expand...
Click to collapse
I can get to the bootloader but it's Device State -locked and when I tell it to boot into recovery it says the device is corrupt. When I use fastboot to oem unlock it says I cannot, and I can't flash when oem is locked either.

kschmitz4 said:
I can get to the bootloader but it's Device State -locked and when I tell it to boot into recovery it says the device is corrupt. When I use fastboot to oem unlock it says I cannot, and I can't flash when oem is locked either.
Click to expand...
Click to collapse
Try
fastboot erase userdata and
Fastboot erase cache
Let me know if that works or not we will move on. Probably won't work since it's bootloader locked
You may have to contact OP and while you're at it, get the MSM tool for us all :good:

It says erase is not allowed in locked state . I think this is probably all she wrote for this one. I think I'm just going to send it back tbh, the whole reason I was trying to root it was because it didn't work with Sprint like they said it would. and I was wondering if I could find a way too make it work with custom software. Thanks for trying

Are you able to flash one of these Fastboot ROMs?

Maybe Sideload can work!
https://support.oneplus.com/app/answers/detail/a_id/4583/kw/7t here is official stock file.
https://forums.oneplus.com/threads/how-to-do-flash-through-adb-sideload.509377/
https://www.the***********.com/sideload-ota-update-stock-recovery-adb/
Please refer above links for your knowledge purpose maybe it can help.....

I unfortunately no longer have Twrp installed as I did a flash-all with a stock rom already . If I try and flash recovery it says "flashing is not alllowed in lock state". Sideloading wasn't functional back when I had twrp either as the functionality for it is still in progress. I'll probably try contacting support one more time and see if I can get a T2 who can unbrick it, otherwise I'm just going to send it back. Thanks for the attempts guys!
Edit: As to the flashboot roms I flash-all'ed one of them and that's how I got into this mess :/.

kschmitz4 said:
I unfortunately no longer have Twrp installed as I did a flash-all with a stock rom already . If I try and flash recovery it says "flashing is not alllowed in lock state". Sideloading wasn't functional back when I had twrp either as the functionality for it is still in progress. I'll probably try contacting support one more time and see if I can get a T2 who can unbrick it, otherwise I'm just going to send it back. Thanks for the attempts guys!
Edit: As to the flashboot roms I flash-all'ed one of them and that's how I got into this mess :/.
Click to expand...
Click to collapse
I ended up needing to flash the fastboot 10.0.3 firmware and was able to do a local upgrade to 10.0.4 that way, then flashing a patched boot.img via fastboot

I can't run any flash commands as my oem is locked. I don't suppose there's anyway around that?

kschmitz4 said:
I can't run any flash commands as my oem is locked. I don't suppose there's anyway around that?
Click to expand...
Click to collapse
How did you flash twrp with it oem locked??That doesnt make sense

I had twrp on it when the oem was unlocked, I was trying to reset the device to stock, so I did a flash-all and then oem locked it. But for some reason the repair was unsuccessful, and now it says my device is corrupted and I forgot to turn on oem unlocking in the settings on my phone after the flash-all before I did the oem-lock.

kschmitz4 said:
I had twrp on it when the oem was unlocked, I was trying to reset the device to stock, so I did a flash-all and then oem locked it. But for some reason the repair was unsuccessful, and now it says my device is corrupted and I forgot to turn on oem unlocking in the settings on my phone after the flash-all before I did the oem-lock.
Click to expand...
Click to collapse
You should have no issues reflashing the stock images

I cannot flash anything. Because my OEM state is locked.

Boot to Stock Recovery ?
Holding for a long time Volume Down + Power Buttons while booting your phone ?

Volume down plus power button takes me to "Your device is corrupt and will not boot"

kschmitz4 said:
Volume down plus power button takes me to "Your device is corrupt and will not boot"
Click to expand...
Click to collapse
Looks like you will need the MSM tool to fix this issue. You'll have to contact OP support and they will remote in your PC, load their software and flash it 100pct back to stock.
Also, disconnect them before they can delete the MSM tool so we can have it here in the community

kschmitz4 said:
Volume down plus power button takes me to "Your device is corrupt and will not boot"
Click to expand...
Click to collapse
Press volume up/down and power, reboot to fastboot. Unlock bootloader again. Install update from settings, reboot and install it again. (local install)
Factory reset in setting, reboot fastboot, lock bootloader. Reboot and untick unlock bootloader in developer settings.

Don't know if it's too late but I believe there's a working MSM tool now

Re-locking Bootloader

Hello!
So, I've purchased a T-Mobile LG G8 ThinQ phone for use in Canada and wanted to remove the T-Mobile splash.
After reading a bit on the forums here, it seems like it'll be too complex for someone like me. (I'm lazy)
So, I uninstalled Magisk, which supposedly uninstalls root and I'm looking to relock my boot loader.
Just I'm having a hard time getting back into bootloader with the vol- and power button method, and using adb to reboot into bootloader doesn't seem to give the desired results.
The phone just reboots like normal with the unlocked bootloader warning.
Reason I wanna relock it is so that I can use Android Pay again and using Magisk Hide or the alternative would require them to give a guaranteed result.
One day it could be patched and I won't be near a PC to resolve the issue and I personally don't like carrying my wallet.

cheddarest said:
Hello!
So, I've purchased a T-Mobile LG G8 ThinQ phone for use in Canada and wanted to remove the T-Mobile splash.
After reading a bit on the forums here, it seems like it'll be too complex for someone like me. (I'm lazy)
So, I uninstalled Magisk, which supposedly uninstalls root and I'm looking to relock my boot loader.
Just I'm having a hard time getting back into bootloader with the vol- and power button method, and using adb to reboot into bootloader doesn't seem to give the desired results.
The phone just reboots like normal with the unlocked bootloader warning.
Reason I wanna relock it is so that I can use Android Pay again and using Magisk Hide or the alternative would require them to give a guaranteed result.
One day it could be patched and I won't be near a PC to resolve the issue and I personally don't like carrying my wallet.
Click to expand...
Click to collapse
I'm not an expert (or even that experienced with phone flashing), but a li'l Googling gives this result. The relevant part being:
Re-locking the bootloader​To re-lock the bootloader:
For newer devices (2015 and higher):
fastboot flashing lock
For older devices (2014 and lower):
fastboot oem lock
Note: Re-locking the bootloading on a Motorola Xoom erases all user data (including the shared USB data).

blaacksheep said:
I'm not an expert (or even that experienced with phone flashing), but a li'l Googling gives this result. The relevant part being:
Re-locking the bootloader​To re-lock the bootloader:
For newer devices (2015 and higher):
fastboot flashing lock
For older devices (2014 and lower):
fastboot oem lock
Note: Re-locking the bootloading on a Motorola Xoom erases all user data (including the shared USB data).
Click to expand...
Click to collapse
Sure, I'll try that if you can help me figure out why I can't get back into the bootloader.

You need to use QFIL to put flash back the engineering abl file to get fastboot. Then you can run the command.

armodons said:
You need to use QFIL to put flash back the engineering abl file to get fastboot. Then you can run the command.
Click to expand...
Click to collapse
Thank you! That worked, I was flashing abl_a and abl_b with the backup images to see if that did anything.

Entering Bootloader on G8?

I’ve unlocked my bootloader and rooted previously on the stock A10 ATT rom. I’ve then cross flashed to the A11 CAN version. Bootloader is still obviously unlocked but root is gone. I understand how to root again but I can’t get into bootloader mode to see if I have an active boot_a or boot_b. Does anyone know how to do this or any other way to see which is active? I’ve tried button combinations and ADB reboot bootloader command with no luck. It was working fine previously but I can no longer get into it after crossflashing.

BWA_Dallas said:
I’ve unlocked my bootloader and rooted previously on the stock A10 ATT rom. I’ve then cross flashed to the A11 CAN version. Bootloader is still obviously unlocked but root is gone. I understand how to root again but I can’t get into bootloader mode to see if I have an active boot_a or boot_b. Does anyone know how to do this or any other way to see which is active? I’ve tried button combinations and ADB reboot bootloader command with no luck. It was working fine previously but I can no longer get into it after crossflashing.
Click to expand...
Click to collapse
You probably don't have the engineering abl flashed to the appropriate abl slot. Using that abl is what gives you fastboot. But once you've used it, you have to flash the original back, so that the phone will boot. The engineering abl is based on an earlier version of android.

This is exactly what I needed. Thank you!