Get the latest version of iTunes for your computer.
Update your computer
Check your computer’s security software
You might need to update, change, or uninstall software that’s causing an issue.
Unplug extra USB devices
Keep only your device, keyboard, and mouse plugged in to your computer.
Turn off your computer and your device. Then turn them on again.
Update or restore your device again.
Get more help
If you tried these steps and get the error again, follow the steps for your error code.