Hello yaoidokidoki,
Thank you for contacting Apple Support Communities. I see that you came from the following article:
Error 3194, Error 17, or "This device isn't eligible for the requested build"
http://support.apple.com/kb/TS4451
That is the correct article for this error code. Have you tried all of the steps in that article, especially trying from another location or using a different computer? If you have, let me know if I can be of further assistance.
Hope this helps,
Jeff D.