- Back up your iPhone or iPad. Always do this before attempting to jailbreak.
- Download the evasi0n jailbreak tool: Download for Mac, Download for PC
- Plug your iPhone or iPad into your computer.
- Launch evasi0n on your Mac or PC. If you're on a Mac running Mountain Lion or Mavericks, you may have to right click the evasi0n jailbreak tool and clickOpen and confirm you'd like to open it.
- Click Jailbreak and then wait.
- After a few seconds, you'll see a message asking you to unlock your iPhone or iPad and tap on the evasi0n7 icon. Do that now.
- You may be asked to unlock your device one more time if you have a passcode.
- evasi0n should now give you a message that your device was successfully jailbroken and the process is done. Just click Exit on your computer.
- Your device may reboot a few more times in order to complete the process and that's it! You should now have Cydia on your iPhone or iPad once more.