Redsn0w 0.9.1b11: downgrade iPhone 4S, iPad 2 and new iPad

The Dev Team Downgrade released Friday an update of its software available redsn0w both PC and Mac. Redsn0w 0.9.1b11, this new version brings an important improvement for all holders of the 4S iPhone, iPad 2 and the new iPad (iPad 3). In fact, hackers have joined forces to deploy a method to
downgrade
these devices. This is a first, it was not feasible before. Specifically, a downgrade is to move to a previous firmware to the one installed on his iPhone or iPad. This kind of method is very convenient for people fond of the jailbreak. Indeed, the IOS IOS 5.1 and 5.1.1 can be downgradeon three devices with the chip A5 (A5X for the new iPad), whether tethered or untethered. 


Thus, the user can now switch from IOS 5.1 (for example) to iOS 5.0.1, although Apple does not normally allow the practice. However, one limitation is the program: you must have backed up the firmware SHSH concerned is using Cydia or using TinyUmbrella.

Redsn0w 0.9.1b11: downgrade 

A constraint is the party for those wanting to keep their baseband in order to have an unofficial désimlockage using Ultrasn0w. It will be updated that redsn0w will update to iOS 5.1.1 must then downgrade. So beware, the action to update its baseband is irreversible for now. In turn, those with an unlocked performed using SAM have a green light.

Now, wait for the tool pod2g have a jailbreak untethered iOS 5.1/iOS 5.1.1. The feat has been achieved, including new iPad, but the work is not finished.

Redsn0w 0.9.11b1 is now available on Mac [Download] and Windows [Download].
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