Need help with new phone locked up
So I just activated my new iPhone 7, and it was going fine until I plugged it into the computer and synced with itunes. I was told I need to update to a new ios, a little weird, but ok. I then got an unknown error (80000065) and then another, 14. The phone is locked up, saying I need to restore to factory settings. I've tried mulitple times, I've tried updating iTunes, loading new updates for my computer, different usb ports I can't get it to work.
Help?
iPhone 7 Plus, iOS 11.4.1