FP6, is it safe to relock the bootloader?

[piero]

@piero

If you plan to relock the bootloader after the installlation

this is not mandatoty, and only available with Official version, why relocking ?

Most important thing to take care about is the “android Security Update" aka "Security Patch Level” date (SPL) included in the installed Operating System on your device at time of the unlock.

new version on witch you want to relock the bootloader, must included a NEWER (or the same) “android Security Update" aka "Security Patch Level” date (SPL),

otherwise you risk to change your device into Brick.

@piero

with the device in bootloader mode,

• Open a terminal from the “/platform-tools” location
• and check bootloader status by running :

./fastboot oem device-info

./fastboot flashing get_unlock_ability

if the return is 1

→ you will be able to relock

if the return is 0

→ locking should be feasible, BUT you will not be able to unlock again in the future…

From experience, even with
get_unlock_ability : 1
if you relock in your situation (older SPL but same month), the device won’t boot, But you will be able to unlock again, it is not bricked as if you use an older month SPL.