Hi All! I have the 2G MMI DVD based Sat Nav in my A4. It has the 2009 DVD Nav disc and I would like to update it. Apart from updated maps, what other (if any) other improvements are there? I have heard something about 3D or birds eye view being improvements? What are these differences in 2009 v 2010 v 2011 v 2012 v 2013 updates? Also where can I get a 2013 disc without paying a fortune from Audi? I can't find any on eBay. Also is there any risk in updating the nav and is it just a case of inserting the new disc and waiting for the upload? Many Thanks in Advance!