I keep getting ERROR 4013

What to do: If you see error 9, 4005, 4013, or 4014 when you restore your iPhone, iPad, or iPod touch - Apple Support

After following those steps, If you continue to see error 9, 4005, 4013, or 4014 when you try to restore your iPhone, iPad, or iPod touch, contact us [Apple Support].

Hi there! I have FINALLY figured out a solution to this error. I have had this issue on 2 different devices and the solution for both was to open up the device, unplug the proximity/Face ID component and then update the device with this unplugged. Updated just fine. The proximity sensor needs to be replaced at that point in which you will lose Face ID but at least you can get the phone booted up without losing your data.