How to Downgrade from iOS 8.1.3 to iOS 8.1.2
iOS 8.1.3 was released recently and it fixed some bugs in iOS 8.1.2. It is a minor update highlighted by fix for multitasking gestures on iPad, and bug fixes for the Spotlight search. It also prevents your device from taking up tons of space while updating an app. However, the users cannot jailbreak iOS 8.1.3 at the moment, since Pangu and other jailbreak software don’t guarantee jailbreaking for iOS 8.1.3. If you don’t like iOS 8.1.3 due to some reason, you can downgrade from iOS 8.1.3 to iOS 8.1.2.
Until Apple is signing iOS 8.1.2, you will be able to downgrade to it. You should better hurry up before Apple stops signing iOS 8.1.2.
You will have to backup all your data and settings before downgrading your operating system because this method will wipe your iPhone and iPad data completely. Now, go to this link and download iOS 8.1.2 IPSW for your device. The file size will range between 1.5 and 2GB for iPhone and iPad. It will take some time to download.
After downloading iOS 8.1.2, connect your iPhone or iPad with your PC and launch iTunes. You need to go to the summary page of your device and hold down the Shift key. You need to keep holding down the key as you click Restore in iTunes.
Next, you need to browse the IPSW file that you just downloaded and open it. iTunes will begin restoring and installing iOS 8.1.2 on your iPhone.
Once the process is complete, your iOS device should now run iOS 8.1.2. From there, you can restore your backup by going to the device summary page in iTunes and clicking on Restore Backup. It will take some time to restore all your settings and apps. Eventually, it will start running iOS 8.1.2, just like you were before updating to iOS 8.1.3.
Luckily, Pangu jailbreak is compatible with iOS 8.1.2 that is ideal for users who love to broaden their span of apps. It is expected that the jailbreak application for iOS 8.1.3 will release soon.