Alright, so here it goes. My Dad has iOS 4.0.1 on his iPhone 4. He has only synced his device twice when he first got it. I'm not sure how to go about upgrading his firmware. Will iOS 5 be able to restore to the iOS 4.0.1 backup when he upgrades? He really needs his app data for a couple of his apps. If anyone could outline a method of updating without losing any data it would be appreciated. Thanks 