A little less than two weeks ago, users on XDA forum started reporting that with the latest October update, they were unable to unlock the bootloader on their Nokia 8 using the official service HMD provides.
HMD fixed the problem in the meantime from their side, and now Nokia 8 users, regardless of what version of OS they are running, can unlock their device’s bootloader. You can find HMD’s bootloader unlock service here.
It’s great to see HMD reacting quickly and bringing back to live the long awaited bootloader service.
via: XDA forums