I currently have iOS 5 beta 7 on my iPhone 4 (Verizon/CDMA) but the front got really scratched up from an unfortunate fall yesterday. It is only a few months old so I can return it to the store probably for a new (well, refurbished) one. BUT I would lose iOS 5. Assuming it is coming out soon (the next few weeks or days or whatever) could I make a back up of the iphone tonight, go to the store to get a different iphone tomorrow, and then just run iOS 4.2.x.x until iOS 5 comes out, THEN restore my backup from the beta? Just looking for options Thanks.