Absinthe 0.4 is a tool for Windows, Mac, and Linux that provides untethered jailbreaks for:

• iPhone 4S: 5.0 and 5.0.1
• iPad 2: 5.0.1

Absinthe 0.4 runs on already-upgraded un-jailbroken devices.

Steps: Download Absinthe 0.4. Open it, plug your device into your computer, and follow the instructions.

Note for unlockers: if you upgrade iOS using iTunes, it will upgrade your iPhone's baseband, which negatively affects unofficial unlocks that depend on specific baseband versions.