If you don't know how downgrade iOS 8.1.3 to 8.1.2 on iPhone, here is the short understandable guide how to do it. The users whose devices were recently updated with the latest iOS 8.1.3 update, cannot be jailbroken using the TaiG tool. As Apple company has patched all the exploits, that were used in their jailbreak. In case you want to your jailbreak back, then you’ll have to downgrade to iOS 8.1.2. Luckily for all such users, Cupertino company is still signing iOS 8.1.2 version.

How To Downgrade iOS 8.1.3 To 8.1.2 On iPhone

To have a successful jailbreak, you need to use this guide and downgrade from iOS 8.1.3 to iOS 8.1.2 version. Unfortunately, after you would do it iOS 8.1.3 will take with it all its bugfixes and improvements. The downgrade process is quite simple and fast, because it will only take a few minutes to complete. Please, don't forget to do a backup, just in case something goes wrong. Step 1. To start you need first download iOS 8.1.2 IPSW file for your iOS device. Step 2. Now please connect your iPhone to your computer and then fire up iTunes. Step 3. On iTunes, find and select your iOS device, then tap on the Restore button while holding the Option Key for Mac or Shift Key for Windows. Step 4. Browse to the location where you’ve downloaded the IPSW file to and select it. Step 5. The Restore process will start now. Please wait for a few minutes for it to be finished. Now, downgrade iOS 8.1.3 to 8.1.2 on iPhone ,you can jailbreak your device using the TaiG tool.