iPhone error 4013: What it is and how to fix it
While we're long past the days where a wired USB to Lightning connection was necessary to install iPhone software updates, sometimes it's still an easier way to go — for example, if you have a limited data connection and no Wi-Fi available. And if you run into the dreaded "iPhone Unavailable" error, you may not have any other option but to plug your iPhone in and restore it to factory settings the old-fashioned way.
While this process runs smoothly most of the time, there are scenarios where you may run into a snag.…