What do you to upgrade a honda gps system?

honda odyssey touring navteq software upgrade. what physically do you do?What do you to upgrade a honda gps system?it is behind your navi screen if you have a flip down screen or under passenger seat depending what year it is and you just eject it and put the new one in like a cd in a cd playerWhat do you to upgrade a honda gps system?you can order direct from honda for around 188. the dvd just gets replaced and your software should be up to date