uninstall or downgrade 3 iOS 11 public beta to iOS 10.3.3, NO data lost

last time i use iTunes downgrade iOS 11 beta 3 fail and stuck, i fix the stuck with ReiBoot. this time i use Reiboot downgrade, easily and data safe. downgrade with the guide: http://www.tenorshare.com/ios-11/how-to-downgrade-iphone-ipad-from-ios-11-beta-to-ios-10.html