Hatte neulich ein komplett neues Unternehmensiphone, dass sich Mitarbeiter mit einer veralteten Apple ID (kein Zugriff, kein Login, kein Emailzugriff) blockiert haben. über den Apple Care Support das nationale iCloud Sicherheitsteam einen Ticket schreiben, Besitzdokumente angeben und die Aktivierungssperre wird aufgehoben. iPhone muss nur über den Recovery Modus zurückgesetzt werden.
I just had this problem and i solved it: (1) turning it off (2) removing the case (3) removing all the screws and connectors on the motherboard (4) taking it out (5) drilling a little hole in the audiojack (make sure its exactly in the middle and from the rearside) with a 1mm-metal-drill (6) with a bended paperclip i pushed the earplug tip out of the audiojack. (7) Thats it! Make sure you don't damage the keyboardconnector (its very fragile), as I partially did. :-) After this whole procedure, I noticed that the fans became very loud. I just reseted the SystemManagementController. (there is a apple-guide for this). Keep in mind, that internal components may get dusty much more faster, as there now is a little hole in the audiojack connector. keep enjoying your sound and voilá DONE!