Sadly TaiG 2.1.2 is still Windows only. In this tutorial, we’ll show you how to jailbreak iOS 8.3 with TaiG 2.1.2 in mere minutes.
Note: this tool requires Windows or a virtual machine running windows. You must have iTunes installed for this to work.
Be sure to have Find My iPhone and passcode lock disabled before proceeding with this jailbreak.
Step 1: Download TaiG 2.1.2 from this link; save and extract it to your desktop
Step 2: Connect your iOS 8.3 device to your computer
Step 3: Launch TaiG 2.1.2
Step 4: Uncheck the 3K assistant checkbox
Step 5: Click Start to begin the jailbreak
Once the jailbreak completes, launch Cydia to start the Cydia initialization process. Congratulations, you are now jailbroken on iOS 8.3 with a working Cydia Substrate!
Now it’s time to download and enjoy all of the compatible tweaks available for iOS 8.3.