How to Downgrade Back From the iOS 9 Public Beta to iOS 8.4
Did you install the iOS 9 Public Beta but are hindered by poor battery life, performance issue, and/or bugs?
Well, you are in luck. You are able to downgrade to iOS 8.4 following these easy steps. However, before you do downgrade, this will restore your phone to it’s original factory settings and unless you have an iOS 8.4 back up saved on iTunes or iCloud, everything will be erased.
1. Download the appropriate 8.4 IPSW for your device here.
2. Make sure you have the latest iTunes 12.2 software in your Mac.