@datenschutzratgeber @PaulaToThePeople sorry, it's not a script. It's been a while since I bought a phone to harden. I have notes to myself on the manual process that I follow. I've just dumped them here: http://paste.debian.net/1180672/ but note that wasn't intended for other ppl to consume, just to jog my memory. So some steps are not detailed (they get me to a screen where I know what to do). Root is not needed.