Here are our step-by-step tutorials that will guide you through all the process of untether jailbreaking iOS 5.1.1 with absinthe, redsn0wand sn0wbreeze:
The 4.3.3 untether works on all Apple devices that support 4.3.2 except for the iPad2:
iPhone 3GS
(GSM)
iPod Touch 3G
iPod Touch 4G
iPad 1
AppleTV 2G (PwnageTool only for now)
Redsnow is easy to use, it is available for Windows and Mac OS. As usual for unlockers – do not update to 4.3.3, use PwnageTool (MAC) and Sn0wBreeze (Windows) to preserve the baseband.
You can download RedSn0w 0.9.6 rc15 .
You can download PwnageTool 4.3.3 .
Ultrasn0w was also updated to support old baseband on new iOS 4.3.3. Ultrasn0w 1.2.3 (for unlockers with old baseband) is available in Cydia.