Conversation

This Tweet was deleted by the Tweet author. Learn more

Replying to

and

It will automatically fall back to the alternate partition set after failing to boot a certain number of times. The failure count is one of the values retrieved via `fastboot getvar all`. It will only be bricked if neither of the partition sets is working which is very unlikely.

This Tweet was deleted by the Tweet author. Learn more

Replying to

and

It's not possible to disable OEM unlocking via the standard interface until the bootloader is already locked, so you need to be able to successfully boot in order to do that. I think it's very unlikely devices are being bricked in any reasonable flashing / development workflow.

Replying to

and

Once the bootloader is locked, you'll be installing updates via update packages, either via recovery or a system update app. Those get installed to the alternate partition set and if they fail to boot a single time it will automatically fall back to the previous installation.

This Tweet was deleted by the Tweet author. Learn more

Replying to

and

No, you can't erase or format partitions with a locked bootloader. However, I'm extremely doubtful that this is actually happening. The device will not boot a single time with a modified system partition and locked bootloader. Locking the bootloader enables verified boot.

11:39 AM · Feb 21, 2019Twitter Web Client

Replying to

and

In order to boot, it has to pass verified boot with either the hard-wired key or the custom Android Verified Boot key that was flashed while the bootloader was unlocked. I highly doubt that people are doing that. If it can't boot, how are they able to disable OEM unlocking... ?

Replying to

and

I've had a lot of experience with these devices and also with users making mistakes and then doing a bad diagnosis of what happened based on a lack of understanding and incorrect assumptions. Stock OS and AOSP don't support disabling OEM unlocking until the bootloader is locked.

Show replies