Downgrade iOS 8 To iOS 7.1.2 (ALL devices supported)
Step 1. First and foremost, you’ll need the iOS 7.1.2 firmware file specific to your device.Download iOS 7.1.2 IPSW from here or ios 8.1.3 download.
Step 2. Next, connect your device to your computer, and fire up iTunes.
Step 3. Select your iOS device from the pane on the left hand side, and hold down the left SHIFT (PC) or Alt/Option (Mac) button while hitting the ‘Restore’ button.
Step 4. Browse to your iOS firmware file downloaded in Step 1.
