Pangu 8.0-8.1 is a tool for Windows and Mac that provides untethered jailbreaks for all devices on 8.0 through 8.1.

Pangu runs on already-upgraded
un-jailbroken devices.

On Twitter: @PanguTeam.

Steps: Read the instructions on Pangu's website. Make sure your computer has iTunes installed. Download Pangu. Open it, plug your device into your computer, and follow the instructions.