How To Downgrade iTunes 10.5 Beta To iTunes 10.3.x On WindowsUzair Ghani·July 18, 2011If you have tried iOS 5 beta, and now want to go back to iOS 4.3.x, you’ll need to downgrade iTunes too, from version 10.5 beta, back to version 10.3.x, which is currently being publicly offered by Apple.
