All the users who have upgraded their iPhone or iPads to iOS5.1 were unable to jailbreak their devices in untethered mode and now when the new update of iOS i.e. 5.1.1 have arrived, GreenPoison released their jailbreak tool for this new version and this time they claim and this is the easiest jailbreak of all time (even your Grandma can do it).
So by now if you have not updated the firmware of your iPhone to iPad then please do so, as all the devices including iPhone 4S can be jailbroken using this tool named ‘Absinthe 2.0.1’. Initially the released tool wad Absinthe 2.0 in which few bugs were reported and then they have been fixed in the version Absinthe 2.0.1. You can use this application on Windows, MAC and Linux. Please note that this tool will work on iOS 5.1.1 only, please do not use this for any firmware below this version.
You will have to connect your iPhone to iTunes, create the backup then erase all the data from it and then open Absinthe 2.0 to click Jailbreak button. After waiting for a while you jailbreak will be completed and then you can put that backup again on your iPhone. That’s it!! your iPhone gets jailbreak untethered. You can go to GreenPoison to get the clear instructions on how download and install this jailbreak on your device