An error numbered 3194 occured while restoring iphone.

I was updating my iPhone and all was going well when suddenly the update failed. Now my iPhone won't turn on. I tried to restore my iPhone to the previous version but an error occurred. The error was "The iPhone could not be restored. An unknown error occurred (3194)." I tried it several times and the same error occurs. What can I do to solve the issue? Can I directly update without restoring the iPhone?
