IPad failed to restore
There was a temporary problem completing your request an unknown error occurred (-45054)
Mac mini, macOS 10.13
Question marked as
Top-ranking reply
These support pages outline the available methods to restore an iPad - either from a backup, or to Factory Settings:
Restore your iPhone, iPad or iPod touch from a backup – Apple Support
Restore your iPhone, iPad or iPod to factory settings – Apple Support
Restore all content to iPad from a backup - Apple Support
You’ll need access to either a Windows PC (with iTunes for Windows installed) or a Mac (with iTunes or Finder - as appropriate for the installed version of macOS).
Download and use iTunes for Windows – Apple Support
Update to the latest version of iTunes – Apple Support
Guidance for documented errors can be found here:
If you see an error when you update or restore your iPhone, iPad, or iPod - Apple Support
Many undefined errors can be due to USB connection difficulties, or a problem with your internet connection - the latter can often be addressed simply by restarting your Internet Router.
If you continue to experience difficulties, you might be well advised to visit the Genius Bar at your local Apple Store or Apple Authorised Service Provider (AASP) - where the technicians will be able to provide assistance:
Genius Bar Reservation and Apple Support Options - Apple