How do I obtain get_unlock_ability set to 1 on an UNLOCKED Fairphone 4?

[yvmuell]

We have several topics spread over the forum I would suggest some reading especially in this topic

Trapped in fastboot mode with locked bootloader and corrupted custom ROM

I have indeed been tampering with lots of things, but the last bigger operations have been a few months back. I might have disabled OEM unlocking after one of them. It booted fine ever since, until yesterday.

Can't flash stock FP4 ROM

Definitely check fastboot flashing get_unlock_ability immediately before locking. And don’t boot into Android after flashing it, the first boot resets it to 0 (The reason being that’s how you get your phone delivered and there are apps that check for that). Flash → Check → Lock