If you have upgraded your device A5 to IOS 5.1 or 5.1.1 and jailbreak you're out there is good news, you can finally get back to IOS 5.0.1 to untethered jailbreak your device.
MuscleNerd has announced a new version of redsn0w which will allow to downgrade the iPhone 4S, 2 and new iPad iPhone and iPhone OS 5.0.1 instalarles again. This will be essential that you have saved your SHSH as always, we have recommended, so far not for nothing, but will begin to be very helpful.
As we have told well this technique iH8sn0w is working on another technique, but still using copyrighted code, the technique of RedSn0w is scheduled from scratch.
And you do you have your SHSH saved?