The new Absinthe 2.0 jailbreak utility will allow you to preform an untethered jailbreak on iOS 5.1.1. This will work on any iPhone, iPad, or iPod touch that is running iOS 5.1.1, yes that includes the new iPad 3 and iPhone 4S.
If you are already jailbroken on iOS 5.1.1 but stuck with a tether, just launch Cydia and search for “Rocky Racoon” to untether your existing device. You do not need to run Absinthe. For everyone else, here is how to jailbreak iOS 5.1.1 untethered:
- Connect your iOS device to the computer via USB and do a quick manual local backup by right-clicking on the device name in iTunes and choosing “Back Up”. You will need this in the odd event something goes wrong.
- Download Absinthe 2.0 and launch the Absinthe utility
- Click on the Jailbreak button and let Absinthe perform its magic, this may take a minute or two
- Absinthe will inform you when the jailbreak is finished, when done look for the Cydia icon on the iOS home screen
- Launch Cydia and enjoy
Since Absinthe 2 is untethered, you are free to reboot at any time without being attached to a computer. If you want to undo the jailbreak at any point you can restore from the iTunes backup you made and be back to normal.
Here is a video tutorial: