iPad 2 And iPhone 4S Can be Downgraded to iOS 5.0.1 From iOS 5.1 [Updatex3]
We've some great news for iPhone 4S and iPad 2 users who may have accidentally upgraded their jailbroken iOS devices to iOS 5.1.
iH8sn0w, developer of Sn0wbreeze - developer of popular jailbreak tool for Windows users has just revealed that he has managed to successfully downgrade his iPad 2 to iOS 5.0.1 from iOS 5.1.
Found a loophole in Apple's apticket system. Restored my iPad 2 to 5.0.1 from 5.1. Works on all A5 devices.