A loophole in Apple’s APTicket system allows it
Now you can downgrade your iPad 2 and iPhone 4S to a 'jailbreakable' version of iOS
As far as we know, there were no way to downgrade A5 devices to a previous iOS version to avoid any updates that ban jailbreak, until now.
iH8sn0w, the well-known hacker, has found a loophole in Apple’s APTicket system that allowed him to downgrade his iPad 2 with iOS 5.1 to iOS 5.0.1 when restoring. The bug is reportedly works on all A5 devices (iPad 2 and iPhone 4S). This is a big step forward (or backward) in the scene panorama of iDevices.
If you want to know, how to perform "the trick", head to the links below where you will found an step-by-step tutorial.
OFFICIAL TWEET: https://twitter.com/#!/iH8sn0w/status/183759971832430592
NEWS SOURCE: http://www.redmondpie.com/downgrade....5-on-iphone-ipad-ipod-touch-how-to-tutorial/
Our thanks to 'Kaos2K' for another news story!