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How to downgrade back to iOS 9 using a clean restore
- Step 1: Back up your iOS device.
- Step 2: Download the latest (currently iOS 9.3.2) public iOS 9 IPSW file to your computer.
- Step 3: Connect your iOS device to your computer via USB.
- Step 4: Launch iTunes and open the Summary page for your iOS device.
Can I downgrade iOS 11 to 9?
No, you cannot downgrade from iOS 11 beta to iOS 9. Once you have upgraded to a higher version beta, you can only downgrade/restore to the latest available iOS version, which as of now is iOS 10.3.2.
Is possible to downgrade iOS?
Not unreasonably, Apple doesn’t encourage downgrading to a previous version of iOS, but it is possible. Currently Apple’s servers are still signing iOS 11.4. You can’t go back any further, unfortunately, which could be an issue if your most recent backup was made while running an older version of iOS.