Note: The tool is still currently available for Windows users only and supports iPhone 6 Plus, iPhone 6, 5s, 5c, 5, 4s, iPad Air 2/1, iPad 4/3/2, iPad mini 3/2/1, iPod touch 5 running iOS 8.4 all the way down to iOS 8.1.3.
Also before you begin, you must make a complete backup of your data either using iTunes or to iCloud.
Step 1: Download the new TaiG jailbreak tool from here: Download TaiG 2.4.3 iOS 8.4 Jailbreak For Windows
Step 2: Restore to iOS 8.4 from scratch on your device using iTunes. This is important as OTA updates tend not to play nicely with modern jailbreaks like TaiG. You can download iOS 8.4 for your device from here: Download iOS 8.4 Final IPSW Links For iPhone, iPad, iPod Touch
Step 3: Disable Find My iPhone on your iOS device. Navigate to Settings > iCloud > Find My iPhone and turn off the ‘Find My iPhone’ toggle. You’ll be required to enter your Apple ID password to confirm.
You can achieve this by going to Settings > Touch ID & Passcode and then tapping on the ‘Turn Passcode Off’ option.
Step 5: Connect your iPhone or iPad to your PC and launch the TaiG jailbreak tool you downloaded in step 1.
Step 6: The tool will now identify your device. Once it’s done, simply click on the ‘Start’ button to kick off the jailbreak process. Make sure you uncheck the ‘3K Assistant’ box before you begin.
Step 7: After a few minutes your iOS device will reboot and you’ll see the Cydia icon on your home screen, confirming that the jailbreak process went smoothly.