Downgrade iOS 5.1.1 or 5.1 To 5.0.1 On iPhone 4S, iPad 2, and New iPad (A5) Using Redsn0w 0.9.11b1

Requirements

1. You must have saved SHSH blobs (BUT IF YOU HAD YOU DEVICE JAILBROKEN BEFORE YOU DON'T NEED THIS).

2. Download Redsn0w 0.9.11b1 [Mac / Windows]

Steps

1. Open Redsn0w and plug in your iDevice

2. Click ‘Extras’, ‘Even More’, then ‘Restore’

3. Download the 5.0.1 and 5.1.1 firmwares for your device

4. Click ‘IPSW’ then find the 5.0.1 firmware for your device. Redsn0w will ask for the 5.1.1 firmware, find the file on your computer.

5. Click ‘local’ to link to a plist file with your blobs.
Click remote if your blobs are saved with Cydia (TRY THIS ONE IF YOU DON'T HAVE SHSH BLOBS BUT YOU HAD YOUR DEVICE JAILBROKEN BEFORE, MOST LIKELY CYDIA GOT YOUR BLOBS SAVED).

6. Wait and let it do it stuff, and then your device will be restored to 5.0.1!