This will jailbreak your device fully untethered so you can reboot anytime without having to connect to a computer.
Use Absinthe To Jailbreak iPhone 4S and iPad 2
- Download Absinthe 0.3 (Mac, Windows, Linux)[Version 0.4 now available]
- Connect your iPhone 4S or iPad 2 to your computer
- Open Absinthe and click “Jailbreak” letting the tool do its work
- Once finished, an Absinthe icon will appear on the home screen
- Tap on the icon to load the Greenpois0n site and download Cydia
For those still waiting on Absinthe for Windows, check out the Chronic Dev Team CLI Tool here