it can only be registered I think within 90 days, just as a reminder for a potential buyer. Reg the bricking: its a bug in the system and even if you know what you do, you can easily brick it at the moment as the get unlockability is often set to 0 and then there is no way to enable OEM unlocking once the bootloader is locked.
I assume as you are a developer you are aware of this issue and you would ensure to test the sensors after installing FPOS