Just wondering... If something catastrophically goes wrong with OS files and you need to do a Factory Image reinstall for whatever reason (not a Factory Reset).
Is this officially possible with a Verizon phone where the bootloader can not be unlocked?
no, because you have to unlock the bootloader to flash a factory image
spencer92a said:
no, because you have to unlock the bootloader to flash a factory image
Click to expand...
Click to collapse
Thanks
Related
SO I made a n00b mistake and accidentally reloacked bootloader trying to flash a fresh system image. I wanted to go back to stock after being rooted and unlocked.
Now i get the red screen of death and it just shuts off the phone. No recovery seems to be installed.
What do I do? Do I throw it in the garbage? Or is there a way to salvage this device?
Bootloader is locked and will not let me unlock again.
Thanks.
jdubya45 said:
SO I made a n00b mistake and accidentally reloacked bootloader trying to flash a fresh system image. I wanted to go back to stock after being rooted and unlocked.
Now i get the red screen of death and it just shuts off the phone. No recovery seems to be installed.
What do I do? Do I throw it in the garbage? Or is there a way to salvage this device?
Bootloader is locked and will not let me unlock again.
Thanks.
Click to expand...
Click to collapse
Can you boot into bootloader mode what so ever?
Yes only into bootloader. Can't unlock again though. Won't let me.
stevew84 said:
Can you boot into bootloader mode what so ever?
Click to expand...
Click to collapse
Only can get into bootloader but cannot unlock again. Everything else is gone.
jdubya45 said:
Yes only into bootloader. Can't unlock again though. Won't let me.
Click to expand...
Click to collapse
Have you tried to manually do this with ADB with the command prompt?
fastboot flashing unlock
stevew84 said:
Can you boot into bootloader mode what so ever?
Click to expand...
Click to collapse
stevew84 said:
Have you tried to manually do this with ADB with the command prompt?
fastboot flashing unlock
Click to expand...
Click to collapse
Yes. Fails. Remote fail and not allowed.
jdubya45 said:
Yes. Fails. Remote fail and not allowed.
Click to expand...
Click to collapse
I don't have the Pixel, so I'm going off of what I know from the 6P.
Does the Toolkit work for the Pixel? There has to be a way to get it working if you can get into bootloader.
stevew84 said:
I don't have the Pixel, so I'm going off of what I know from the 6P.
Does the Toolkit work for the Pixel? There has to be a way to get it working if you can get into bootloader.
Click to expand...
Click to collapse
I am not sure. I think I need Unlocked bootloader.
Actually i think you just need to reunlock using depixel8. That should unlock your bootloader and allow you to flash new firmware
Did you try using dePixel8 to to unlock your bootloader back? I would try that.
Sent from my Pixel XL using XDA Labs
Marghost said:
Did you try using dePixel8 to to unlock your bootloader back? I would try that.
Sent from my Pixel XL using XDA Labs
Click to expand...
Click to collapse
You have to be booted in Android for dePixel8 to work.
Am I missing something? why can't you just flash factory image again from the bootloader and then unlock your bootloader with the depixel8?
Sent from my Pixel XL using Tapatalk
MArtyChubbs said:
Am I missing something? why can't you just flash factory image again from the bootloader and then unlock your bootloader with the depixel8?
Sent from my Pixel XL using Tapatalk
Click to expand...
Click to collapse
He said that he tried to unlock the bootloader again and it won't let him. With a locked bootloader, you can't flash the system images.
Sent from my Pixel XL using XDA-Developers mobile app
Moderator warning,
I have cleaned this thread. XDA does not allow users to discuss fraud on this site.
jdubya45 said:
SO I made a n00b mistake and accidentally reloacked bootloader trying to flash a fresh system image. I wanted to go back to stock after being rooted and unlocked.
Now i get the red screen of death and it just shuts off the phone. No recovery seems to be installed.
What do I do? Do I throw it in the garbage? Or is there a way to salvage this device?
Bootloader is locked and will not let me unlock again.
Thanks.
Click to expand...
Click to collapse
My mind is blown on how you accomplished this. Did you ERASE the partitions and then plan on flashing stock ones yourself? Why not just run the script (flash-all.bat) that would have automatically done the ENTIRE process for you, except re-locking the bootloader?
If all you did was re-lock the bootloader, it should have done a factory reset on the next boot and used the existing system partition. If you erased the system partition and then re-locked the bootloader, you are almost certainly screwed and had better hope Google has some mercy to let you RMA the phone.
Couple options you could try off the top of my head. The pixel has A/B patitions try adb sideloading an update zip to get it to switch to the backup partition that might still be there.
You could also try downloading the Factory images and extracting the system and go into fastboot and type
Code:
fastboot boot system system.img
and see if that works. Then if it boots on the temp image run deadpixel8 or whatever its called and reflash the stock image with the flash-all.bat.
have the same problem on my pixel after accidentally relocking after root before flashing back to stock.
Does anyone have the stock pixel xl recovery.img? I thinking if I boot into recovery "fast boot boot recovery.img" then I can add side load etc the ota from google.
jdubya45 said:
SO I made a n00b mistake and accidentally reloacked bootloader trying to flash a fresh system image. I wanted to go back to stock after being rooted and unlocked.
Now i get the red screen of death and it just shuts off the phone. No recovery seems to be installed.
What do I do? Do I throw it in the garbage? Or is there a way to salvage this device?
Bootloader is locked and will not let me unlock again.
Thanks.
Click to expand...
Click to collapse
Insert BRICK emoji here
Atlantian said:
Insert BRICK emoji here
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Click to collapse
Hi to all!
my question is the following: if I unlock the bootloader, only start the custom recovery without flash it, flash magisk, and then re-lock the bootloader, i can have some problems?
Yes. It checks for non-stock data and it wipes the device upon relock. You may end up with a brick if you try to relock with non-stock software.
Gafanhotz said:
Yes. It checks for non-stock data and it wipes the device upon relock. You may end up with a brick if you try to relock with non-stock software.
Click to expand...
Click to collapse
But I'm not going to change the system, magisk does not change the system, or am I wrong?
CarloHD said:
But I'm not going to change the system, magisk does not change the system, or am I wrong?
Click to expand...
Click to collapse
A locked bootloader will not boot a device that has a different signature from the stock one with any partition other than cache or userdata. Since Magisk has to change the boot image it has a different checksum than the stock because only OnePlus can resign an image with their signature.
On another note why do you need the bootloader to be locked? The only difference I can think for would be warranty but if you're that worried it wouldn't be worth it in the first place.
bullet25 said:
A locked bootloader will not boot a device that has a different signature from the stock one with any partition other than cache or userdata. Since Magisk has to change the boot image it has a different checksum than the stock because only OnePlus can resign an image with their signature.
On another note why do you need the bootloader to be locked? The only difference I can think for would be warranty but if you're that worried it wouldn't be worth it in the first place.
Click to expand...
Click to collapse
Actually the reason why I would like to lock the bootloader is to avoid the unlocked bootloader warning screen
CarloHD said:
Actually the reason why I would like to lock the bootloader is to avoid the unlocked bootloader warning screen
Click to expand...
Click to collapse
It's an extra 5 seconds. Learn to deal with it
You can sign images yourself:
Re-locking Bootloader w/ Custom OS
Do this wrong and you will have a bad day..., its easier to live with it. On some devices they have managed to change that image, but not eliminate it.
bullet25 said:
A locked bootloader will not boot a device that has a different signature from the stock one with any partition other than cache or userdata. Since Magisk has to change the boot image it has a different checksum than the stock because only OnePlus can resign an image with their signature.
On another note why do you need the bootloader to be locked? The only difference I can think for would be warranty but if you're that worried it wouldn't be worth it in the first place.
Click to expand...
Click to collapse
c_86 said:
It's an extra 5 seconds. Learn to deal with it
Click to expand...
Click to collapse
It also compromises SECURITY
PHANX0M said:
It also compromises SECURITY
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Click to collapse
why would u root then??????
I've unlocked my verizon xl's bootloader on the october update and I was wondering if it could be re-locked by any means other than fastboot? like an OTA for example or a ROM flash or an official image flash, etc. Do I have to watch what I flash to my phone or am I safe?
Jack Mayerz said:
I've unlocked my verizon xl's bootloader on the october update and I was wondering if it could be re-locked by any means other than fastboot? like an OTA for example or a ROM flash or an official image flash, etc. Do I have to watch what I flash to my phone or am I safe?
Click to expand...
Click to collapse
No worries. They can't relock your phone with a software update or upgrade.
jaytv said:
No worries. They can't relock your phone with a software update or upgrade.
Click to expand...
Click to collapse
Great. Can I inadvertently lock it with a full factory image flash though?
Jack Mayerz said:
Great. Can I inadvertently lock it with a full factory image flash though?
Click to expand...
Click to collapse
No.
Need back to 100% stock. I am returning, so how to unroot, and lock BL??? Thanks!
Factory reset and flash stock image from Google directly. Finally lock bootloader
Code:
fastboot flashing lock
miravision said:
Factory reset and flash stock image from Google directly. Finally lock bootloader
Code:
fastboot flashing lock
Click to expand...
Click to collapse
Is factory reset really needed for unrooting ?
Why wouldn't just flashing the original boot.img and re-locking the bootloader be enough ?,
considering you haven't changed any system files with root.
Maybe also "fastboot flash vbmeta --enable-verity --enable-verification vbmeta.img" before
locking the bootloader to enable verity.
andreipaval said:
Is factory reset really needed for unrooting ?
Why wouldn't just flashing the original boot.img and re-locking the bootloader be enough ?,
considering you haven't changed any system files with root.
Maybe also "fastboot flash vbmeta --enable-verity --enable-verification vbmeta.img" before
locking the bootloader to enable verity.
Click to expand...
Click to collapse
Changing the status of the bootloader - from either locked to unlocked - or unlocked to locked, wipes the phone, so same as a factory reset. Also, if they're returning the phone, they'd want to factory reset anyway.
I'd also suggest Official Google Android Flash Tool, and my understanding of flashing vbmeta.img is that if you don't have it set to disable, then by default it's enabled, although using the switches might work fine too.
want to put my p6p back to stock. currently rooted on stock firmware stock kernel etc. what's the best way to get it back to stock? do I need to flash back the stock boot image before I lock the bootloader?
Magisk has an option to unroot then you can lock the bootloader
Either as @spart0n proposed or flash the original factory image (for that I prefer to using the Android Flash Tool, using the fastboot method has so far always failed to work for me).... After that you are back on original stock and can proceed to relock the bootloader using "fastboot flashing lock" (detailed info on the above linked page)
whatsisnametake2 said:
want to put my p6p back to stock. currently rooted on stock firmware stock kernel etc. what's the best way to get it back to stock? do I need to flash back the stock boot image before I lock the bootloader?
Click to expand...
Click to collapse
Official Google Android Flash Tool, and then lock the bootloader after that.
Note that you should never lock the bootloader unless you're 100% stock, and flashing the full stock image is the only way of ensuring that, even if you choose to not let Official Google Android Flash Tool wipe your user data, as well.
ok thanks. so if I wasn't going to use the android flash tool, flash the full stock image, then lock bootloader?
whatsisnametake2 said:
ok thanks. so if I wasn't going to use the android flash tool, flash the full stock image, then lock bootloader?
Click to expand...
Click to collapse
Yes. I would leave the oem unlock slider at allow unlock for awhile in case it goes sideways. I would wait for the first OTA update before changing that.
TonikJDK said:
Yes. I would leave the oem unlock slider at allow unlock for awhile in case it goes sideways. I would wait for the first OTA update before changing that.
Click to expand...
Click to collapse
Great advice. Once it's stable you can flip the OEM switch and a reboot reenables all security features.
TonikJDK said:
Yes. I would leave the oem unlock slider at allow unlock for awhile in case it goes sideways. I would wait for the first OTA update before changing that.
Click to expand...
Click to collapse
you mean in developer options? I hadn't thought of that thanks. so a full factory flash with wipe doesn't set that back to off?
so,
full factory flash with wipe
lock bootloader
boot into phone and turn OEM unlocking off
factory reset from phone settings
I'm returning the phone to google so it needs to be completely stock.
whatsisnametake2 said:
you mean in developer options? I hadn't thought of that thanks. so a full factory flash with wipe doesn't set that back to off?
so,
full factory flash with wipe
lock bootloader
boot into phone and turn OEM unlocking off
factory reset from phone settings
I'm returning the phone to google so it needs to be completely stock.
Click to expand...
Click to collapse
If you are returning it them skip my advice and do your steps.
Don't worry about this too much. Google does not care if you unlocked it.
TonikJDK said:
If you are returning it them skip my advice and do your steps.
Don't worry about this too much. Google does not care if you unlocked it.
Click to expand...
Click to collapse
ok thanks. so if you flash factory image then lock bootloader, the oem unlock will still be set to on when you go into the phone?
whatsisnametake2 said:
ok thanks. so if you flash factory image then lock bootloader, the oem unlock will still be set to on when you go into the phone?
Click to expand...
Click to collapse
Correct
TonikJDK said:
Correct
Click to expand...
Click to collapse
ok cheers