The hacker Winocm offers an interesting demonstration of iPad 2 that changes the iOS version ... in a few moments. At each restart, a new iOS version is present. The creator of the untethered jailbreak for iOS 5 P0sixspwn starts and ends with iOS 6 and iOS 7. Everything is done with its Mac and iPad connected via USB.
Of course, the mechanism is not described and may not be easy to achieve. A series of hacks must be necessary to achieve such a exploit. No specific details are shared
