Restore iPhone from a backup from another computer?

Backups in Windows 7, 8, or 10

To find a list of your backups, go to \Users\(username)\AppData\Roaming\Apple Computer\MobileSync\Backup\

You can also use these steps:

1. Find the Search bar:
   1. In Windows 7, click Start. 
   2. In Windows 8, click the magnifying glass in the upper-right corner.
   3. In Windows 10, click the Search bar next to the Start button.
2. In the Search bar, enter %appdata% or %USERPROFILE% (if you downloaded iTunes from the Microsoft Store).
3. Press Return.
4. Double-click these folders: "Apple" or "Apple Computer" > MobileSync > Backup. 

Delete or copy backups on your Mac or PC

Don't edit, relocate, rename, or extract content from your backup files, because these actions might ruin the files. Use the following sections to make copies of your backups or delete backups that you no longer need.

Copy backups to another location

If you need copies of your backups, you can find the Backup folder and copy the entire folder (not just part of it) to another place, like an external drive or network-storage location.

When you use Time Machine, it automatically copies your Backup folder when you back up the Home folder on your Mac.