Is it safe to lock my FP6 bootloader?

[piero]

Hello @fatboot, Welcome to the /e/ users forum.

@piero

If you plan to relock the bootloader after the installlation

(not mandatoty, only available with Official version, why relocking ?)
Most important thing to take care about is the “android Security Update Patch Level” in the already installed Operating System on your device before you start the install process.

It must be OLDER than the “android Security Update Patch Level” included in the /e/OS build you want to install, otherwise you risk to change your device into Brick.

• You will find this information about stock OS on the device :

settings --> about phone --> android version 15 --> android security update

@fatboot

I had my FP6 sitting unused from October with Fairphone’s OS
…
The bootloader version was FP6.QREL.15.148.0

@fatboot

3.3-a15-20251210556408-official-FP6 with Android security update December 1, 2025

look like you are in good conditions to relock…