How to Downgrade from iOS 9 Back to iOS 8.4.1
Want to downgrade iOS 9 back to iOS 8.4.1? You can do that, as long as you move fairly quickly. If you have an iPhone, iPad, or iPod touch that has been updated to iOS 9 and decided it’s not for you for whatever reason, you can revert back to the prior release. Maybe you felt the update runs slower, maybe a necessary app isn’t yet compatible with the new iOS, or maybe you just preferred the prior version of iOS, the reason for downgrading doesn’t matter.