God damn ... those dealers are even worse than LCD sellers .
You can easily update your software . Here You've got the newest SW
http://www.xoutpost.com/navigation-sy...available.html
All you need is to download it and burn ( I prefer ImgBurn )with the slowest speed . Then put it into your unit and the installation process will show up , next put the SW out . You gotta change the perspective "3d" mode in settings , but I can't tell You exactly where is it , I saw the instructions on the forum , but I guess You'll find it without bothering yourself .
Good luck and hang the local dealer's emploees.
EDIT :
ccfj1 was faster , sorry :P