Redsn0w 0.9.12b1 Brings Untethered Jailbreak to iOS 5.1.1 [Download Links]
The popular Redsn0w jailbreak utility has been updated to bring untethered jailbreaks to iOS 5.1.1 on most iDevices. Versioned as redsn0w 0.9.12b1, the tool supports the following hardware on 5.1.1: iPhone 3GS, iPhone 4, iPhone 4S, iPad, iPad 2, iPad 3, iPod touch 3rd and 4th gen, and Apple TV1 and ATV2. The A5 support is identical to that found in the recently released Absinthe 2 for iOS 5.1.1, which focused on the new iPad and iPhone 4S.
If you are already jailbroken tethered with iOS 5.1.1 you can use Cydia to download the Rocky Raccoon untether, you do not need to re-run Redsn0w. Likewise, if you’ve already installed the rocky-raccoon package to untether a 5.1.1 jailbreak there is no reason to download or use the new redsnow tool.
Download Redsn0w 0.9.12b1
These are direct download links from the iPhoneDevTeam:
Windows users must run redsn0w in administrator mode.
If you like to follow guides, here is a simple tutorial on using Redsn0w for an untethered iOS 5.1.1 jailbreak.