There is no update until 2010. If you buy a 2009 disc you are getting the 2007 update. Wait until Dec to order otherwise you waste money and the 2010 disc appears.
Hey guys, I bought my 05 STS about 2 months ago and I have been getting the run around by the dealer. They keep telling me they will get it but they are trying to get it off another car at an auction. I don't have the patience to wait any longer and they refuse to reimburse me if I purchase it myself. Can anyone direct me in how to get this NAV disc for the East coast region free?