How to restore an iOS backup to an earlier version of iOS

If you find yourself needing to restore a backup from a device with a newer version of iOS than the target device, you'll need to be aware that restoring a newer backup to a downgraded iOS device isn't possible without a few tweaks.

如果你有搭載 iOS 5 至 iOS 8 的 iPhone、iPad 或 iPod touch，本文說明如何備份你的裝置和資料。

為了 將iTunes備份內容有選擇地還原到iPhone 7/8 / X / XR / XS / 11/12，您可能需要使用其他程序來幫助您選擇只希望在新設備上下載的那些應用程序。

In this video, I'll explain and demonstrate how to restore a newer iOS backup to an older iOS version. This can be done on Windows or MacOS, and doesn't require any third-party software.

如果升級到iOS 8 Beta版後感到後悔，可以嘗試使用本文中提供的方法降級到iOS 7。