My frind jail broke his iphone, and he wants to restore it

He gets as far as updating his iphone, but "Error 3194" keeps popping up, please help as quickly as possible!

Https://discussions.apple.com/thread/4330246?start=0&tstart=0

that thread should resolve your issue, it has worked for me as recently as 2 weeks ago when doing some work on a friend's phone.