Relock bootloader failing - Xperia 10

Devices
#1

I am trying to reinstall Android to give another life to a Xperia 10.
I successfully flashed back Android using the standard Emma tool, based on https://jolla.zendesk.com/hc/en-us/articles/115004283713-Reverting-Xperia-device-to-Android-OS-and-reinstalling-Sailfish-OS.
However, I do not see how to lock the bootloader again and so booting shows the evil message that the device cannot be trusted blah blah blah:

I had the impression that fastboot will be an easy mean to get to it.
→ ‘fastboot oem lock’ produces an error message
“FAILED (remote: ‘unknown command’)
fastboot: error: Command failed”
I tried ‘fastboot flashing lock’ and ‘fastboot oem relock’ but same error message. If I do ‘fastboot getvar all’, I can see all the detailed information of the device, so I guess there is some options which prevent relocking the device?
Strangely enough I did not have issues to unlock it back in the days :wink:

In Android, I have Developper mode enabled, USB debugging on. I cannot touch the button OEM unlock, it is greyed out (as it is already unlocked I guess)

Is there anyone seeing what I am not?
thanks :slight_smile:

Sony 10 relock with fastboot oem lock
Before installing Sailfish
#2

according to xda, you can’t relock BL on xperia 10 mk1.

3 Likes
#3

@remote thanks for the info.

Indeed it seems that according to [Q]How to lock bootloader on Xperia 10 plus ? | XDA Forums Xperia 10 devices cannot be locked again.
Not sure if this is true for all Xperia but seems to be the case for quite a large number of them :grimacing:

Xperia10 after installation bootloader unlock or lock
#4

Hello,
what if I have a warranty claim regarding hardware damage with a newly purchased Sony 10? No dealer will take it back for exchange if the bootloader is unlocked? Do I then have to contact Sony directly with warranty claims?

If it possible to relock the Sony X, XA, XA2 and 10.2 devices?

Greetings Markus