First... Make sure you have the Latest Version of iTunes (v11.1.5) Installed on your computer
Note: If the Support Article you posted from does not resolve it... then you have a problem.
Error 3194, Error 17, or "This device isn't eligible for the requested build"
Perhaps a Visit to an Apple Store or AASP (Authorized Apple Service Provider) is required..
Be sure to make an appointment first...
Note:
That error message may be indicative of the Device being Hacked / jailbroken.... If this is the case then you are on your own.