Man kann das ganze umgehen, indem man vorher unter den Entwickleroptionen den OEM Unlock zulässt:
Enable developer options on your phone (Google it - it's easy, usually you just go into the settings, "about phone," find the build number (might be under software), and then tap it until it says "You are now a Developer!")
Go to developer options and find "Enable OEM unlock."
Check the box, and hit "enable." You will get a warning saying this will disable device protection features, and this includes factory reset protection. And I've tested it - factory reset protection no longer works with this checkbox enabled.
Dies schaltet dieses 'Sicherheitsfeature' ab.
Sonst muss man 72 Stunden warten um wieder Zugriff auf das Gerät zu haben.
Ist ab LP so.