How to downgrade iOS 11 to iOS 10.3.3 for iPhone 6S
after upgrading to ios 11, if the device is unable to run the operating system stable and often fails, you should downgrade to ios 10.3.3.
Tags : downgrade ios 11
How to downgrade iOS 11 beta to iOS 10
after upgrading to ios 11 beta, we can downgrade to ios 10 if you want. but you need to back up data before downgrading.