Simple two steps to save your iPhone from restarting constantly, losing the software and telephone book when updates to 5.0.1
Question about updating my iPhone to iOS 5.0.1
Q1: I've been trying to download the new iOS 5.0.1 software and updates my iPhone to iOS 5.0.1, however, why my iPhone is restarting constantly when updates to 5.0.1? iPhone 4 can't restore while trying to update to iOS 5.0.1?