Depends on what version you currently have. Determine if your version is out of date then see if the dealer will update you free.
You can find your firmware version by going into Settings and finding it in one of the screens. Not sure what screen but if you check them all you'll come upon it. It's with the screen that says something about Music Database.
You can also do the upgrade yourself if you're technically inclined.
There's a thread somewhere on this site that details the steps.
