Alright I have a good idea that might convince Apple to start signing the 3.1.X software again.... If we all provided feedback to Apple listing reasons why downgrading should be allowed, they might allow it again to please the community. I know it sounds crazy but there's nothing to lose by simply posting feedback. I personally have posted feedback twice on the situation. I cant post a link to the feedback but GOOGLE "Apple Feedback" Also if there is a thread like this sorry I didnt see it and sorry if its in wrong section.