Guide: Re-Locking the Bootloader completely on the Pixel 2 XL

[bigblueshock]

I did not see this posted anywhere, nor do I see it on Google's Factory Image website/instructions.

Based on testing... When re-locking the bootloader, "fastboot flashing lock" does NOT seem to lock the critical partition.

After following Google's steps to a T and locking the regular bootloader, It was indeed locked. I even attempted to lock regular bootloader again, and received a message stating it was already locked. Bootloader screen also says everything is locked. All is fine and dandy, right?

For ****s and giggles, I tried performing "fastboot flashing lock_critical". It indeed asked me if I wanted to lock the critical partition. After re-locking critical, I was not able to lock critical again. Safe to say, critical does not get re-locked when re-locking regular bootloader.

Safe to say... to re-lock the bootloader completely, you probably want to perform "fastboot flashing lock_critical" then perform the regular "fastboot flashing lock".

 

[abogrhen]

I did not see this posted anywhere, nor do I see it on Google's Factory Image website/instructions.

Based on testing... When re-locking the bootloader, "fastboot flashing lock" does NOT seem to lock the critical partition.

After following Google's steps to a T and locking the regular bootloader, It was indeed locked. I even attempted to lock regular bootloader again, and received a message stating it was already locked. Bootloader screen also says everything is locked. All is fine and dandy, right?

For ****s and giggles, I tried performing "fastboot flashing lock_critical". It indeed asked me if I wanted to lock the critical partition. After re-locking critical, I was not able to lock critical again. Safe to say, critical does not get re-locked when re-locking regular bootloader.

Safe to say... to re-lock the bootloader completely, you probably want to perform "fastboot flashing lock_critical" then perform the regular "fastboot flashing lock".

we unlocked bootloader then unlocked critical
so it makes sense to lock critical then lock bootloader as you said

 

[bigblueshock]

we unlocked bootloader then unlocked critical
so it makes sense to lock critical then lock bootloader as you said

Oh believe me, I agree. I thought it was strange re-locking the critical isn't part of Googles Instructions. Not even sure if it matters, but just an extra security precaution

 

[OnePlusPat16]

Thank You very much for the heads up. Saved me a headache

 

[rester555]

So the process for stock and locked would be to install a factory image to wipe and bring back to stock, fastboot flashing lock_critical, and fastboot flashing lock?

 

[Badger50]

So the process for stock and locked would be to install a factory image to wipe and bring back to stock, fastboot flashing lock_critical, and fastboot flashing lock?

Correct :good: However, I wouldn't do it unless you plan to RMA it, or sell it

 

[Galactus]

Correct :good: However, I wouldn't do it unless you plan to RMA it, or sell it

Hmmmm what about if you are worried about theft. You can still wipe the phone and login with another account can't you with the bootloader unlocked? Where as the phone will always be tied to the last google account logged in if the bootloader is locked, making the phone useless to sell even overseas. I could be wrong though.

 

[rspkt]

When re-locking my bootloader on my Pixel 2 XL, I only needed to enter "fastboot flashing lock_critical" first. When I entered "fastboot flashing lock" afterwards, this error was returned:

FAILED (remote: ' Device already : locked!')

Seems you only need one step not both. My device is now 100% stock and bootloader is locked and ready for RMA.

 

[kaplex]

When re-locking my bootloader on my Pixel 2 XL, I only needed to enter "fastboot flashing lock_critical" first. When I entered "fastboot flashing lock" afterwards, this error was returned:

FAILED (remote: ' Device already : locked!')

Seems you only need one step not both. My device is now 100% stock and bootloader is locked and ready for RMA.

Yes. just "fastboot flashing lock_critical" will completely lock your bootloader

 

[def-g]

Looking to sell my phone. So is there detailed instructions I can follow to return to stock and relock bootloader?

 

[Badger50]

Looking to sell my phone. So is there detailed instructions I can follow to return to stock and relock bootloader?

Clean fastboot the factory and let it wipe your device. Then factory reset, then lock the bootloader. You must be 100% stock before you lock it down my friend :good:

 

[def-g]

Clean fastboot the factory and let it wipe your device. Then factory reset, then lock the bootloader. You must be 100% stock before you lock it down my friend :good:

If data is wiped once I flash the factory image. Why would I need to factory reset it? Your wisdom is appreciated.

 

[Badger50]

If data is wiped once I flash the factory image. Why would I need to factory reset it? Your wisdom is appreciated.

Just an extra precaution my friend to make sure that puppy is squeaky clean!

 

[def-g]

Just an extra precaution my friend to make sure that puppy is squeaky clean!

Hahaha. :good:

 

[JarMagic]

Is the OEM unlocking supposed to be grayed out?

 

[Edmontonchef]

Is the OEM unlocking supposed to be grayed out?

Usually it's greyed out if it's already unlocked or a verizon phone