Absinthe Tutorial: https://www.youtube.com/watch?v=q8QiDc92HJs
Download redsn0w 0.9.11b1: http://blog.iphone-dev.org/post/22834622159/5x-redux
Find iPhone and iPad Firmware Files: http://stateofjailbreak.com/find-iphone-firmware-files/
Downgrade iOS 5.1 / 5.1.1 with iPhone 4S & iPad 2
Wallpaper downloads: http://imgur.com/a/pE9WZ
In this video I give a tutorial on how to downgrade to iOS 5.0.1 firmware on your iPhone 4S or iPad 2 on iOS 5.1 or 5.1.1. To downgrade firmware you will need to have iOS 5.0.1 SHSH blobs already saved with TinyUmbrella or in Cydia. To do this you will need a Mac or PC, redsn0w 0.9.11b1 and the iOS 5.0.1 and iOS 5.1.1 IPSW firmware files. Once you have downgraded you can use Absinthe or redsn0w to get an untethered jailbreak.