evasi0n is a tool for Windows, Mac, and Linux that provides untethered jailbreaks for:

• iPhone 5: 6.0 through 6.1.2
• iPhone 4S: 6.0 through 6.1.2
• iPhone 4: 6.0 through 6.1.2
• iPhone 3GS: 6.0 through 6.1.2
• iPad 4th generation: 6.0 through 6.1.2
• iPad 3rd generation: 6.0 through 6.1.2
• iPad 2: 6.0 through 6.1.2
• iPad mini: 6.0 through 6.1.2
• iPod touch 5th generation: 6.0 through 6.1.2
• iPod touch 4th generation: 6.0 through 6.1.2

evasi0n runs on already-upgraded
un-jailbroken devices.

Steps: Download evasi0n. 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.