Worked for mine too. Mid 2010 GTi. Just used windows disc burner thing that is part of Windows 7.....worked as in the video.
I held down the reset buttons <>* and inserted disc. Went from there, no key in as per other peoples posts.
Thanks guys....strictly for the passengers of course.
BTW it was a mid 2010 factory installed RNS-510 (sat-nav unit). Saw this thread a while ago but got confused after reading about the day/night button etc....but works fine in aussie versions using the reset buttons.