gps dvd

I recently purchased the 2011 GPS map update from the dealer for my 2006 525i. The DVD drive does not recognize the new DVD disk. It worked fine for the map DVD that I purchased two years ago. It's not the DVD disks. The dealer's service department says a complete computer system...

Are there any aftermarket options for the Navteq GPS/map DVD? I know the 2009.1 version is now out, but my 2008 NAV's maps are, well, pretty weak visually. I'm assuming the 2009 version is just a content/road update, and still features the same poor image quality.