Some iOS users are thrilled with iOS 11. . . and some are definitely NOT. If you fall into the second category don’t fret, you can turn back time and downgrade to iOS 10. Before you do this keep in mind that, “If you need to restore a backup, you’ll only be able to restore backups made under iOS 10.3.3 or restore your iPhone or iPad as a new device.” Follow the instructions on this link to download iOS 10.3.3 manually. If you want to do this, do it soon because once newer versions of iOS 11 become available this will not be an option.