I've got an issue with fastboot that I hope somebody could help me with.
So the device is in fastboot mode unlocked and I would like to lock it. On my Fedora laptop when I do 'fastboot devices' I get back an alphanumeric string that I guess is the ID of the device. So everything should be OK? But then when I do 'fastboot flashing lock' I get back 'waiting for any device' and nothing more.
What could be the problem?