Aporte original por: Chris Stables ,
Arbaman is right, your phone has to boot before those third party recovery programs will work. Since it is not booting it would be a waste of money. If your phones memory is indeed full there is no solution at the moment to retrieve it. My advice would be to put it in a draw with your passcode and hope Apple will have a change of heart in situations like this and let you downgrade the IOS. Ben might be able to give you some more details if he reads this thread.