Fairphone 6 unbrick: Trapped in fastboot mode with locked bootloader and corrupted stock ROM

[koumilak]

@Extarion

Now, fastboot flashing get_unlock_ability returned 1, so I was able to relock the bootloader according to the official instructions, making sure that the phone never fully booted into Android between each step, instead loading back into Fastboot and retesting fastboot flashing get_unlock_ability before proceeding.

Congrats!
So it really was a question of booting into /e/OS between lock_critical and lock and not a SPL issue.

My question for you is : at the end of lock_critical, what did it prompt you to do? Did it propose to stay in bootloader or reboot to bootloader or reboot to system? Or did it just reboot and you had to make sure it got into bootloader?