I have an iPhone 4s that I am about to sell. So I decided to back it up to iTunes and that went fine. I have an iPhone 4 that I want to restore using the 4s backup. The iPhone 4 is on same firmware so I figured it would be no problem. Will restore completely but right when iTunes recognizes, it shows a black screen with a white circle looking thing in center of screen and freezes there. I have tried restoring and doing it again and no good.