I was upgrading my iPhone 6S to iOS 10.0.2 when my phone went into recovery mode and now it shows the iTunes logo. When I connect my phone to iTunes, it says "There is a problem with the iPhone that requires it to be updated or restored" so I go along with restore because right now I don't care about any data I might or will lose anymore. Then it contacts the iPhone update server and asks if I want to restore the phone to factory settings and that all media files will be erased. When I click on "Restore and Update", two pop-up windows appear to which I agree, and then I get the message "The iPhone software update server could not be contacted. An unknown error occurred (1671)". I have tried turning off windows firewall, I have tried all the suggestions that I could find online. And some of the software that promise a fix are not free. Please help. I have reached a point of frustration where I could not care about the data I had on my phone anymore. I just need it to come back to normal mode. Thanks in advance.