If you can’t remember the password for your iPhone, iPad, or iPod touch encrypted backup
You can’t restore an encrypted backup without its password. With iOS 11 or later or iPadOS, you can make a new encrypted backup of your device by resetting the password.
Go to Settings.
Tap General.
Tap Transfer or Reset [Device].
Tap Reset.
Tap Reset All Settings and enter your device passcode.
Tap Reset All Settings.
Follow the steps to reset your settings. This won't affect your user data or passwords, but it will reset settings like display brightness, Home Screen layout, and wallpaper. Resetting your settings also removes your encrypted backup password.
Connect your device to the Finder, the Apple Devices app, or iTunes again and create a new encrypted backup.
Creating a new password does not allow you to access previous encrypted backups.
If you have a device with iOS 10 or earlier, you can't reset the password. In this case, try the following:
If someone else set up your device, ask them for the password.
Use an iCloud backup instead. If you don't have an iCloud backup, you can make one.
Use an older Apple Devices app, iTunes, or Finder backup.
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