How to Jailbreak iPhone, iPad, or iPod touch on iOS 5.1.1 with Absinthe 2.0
The newly released Absinthe 2.0 jailbreak app may be one of the easiest to use jailbreaking tools of all time. If you’re interested in exploring the jailbreak world or running third party tweaks on an iPhone, iPad, or iPod touch, here is how to jailbreak any such device 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
That’s about it. Because 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.