I just purchased a 2007 X3 with the premium package w/bmw assist and flip up navigation. I would like to get the navigation up to date.

Is there some kind of an update available for the actual operating software on the unit independent of the maps? If so, how do I obtain it and what does it cost (approx)?

Secondly how do I obtain map updates and are they available here or online?

Lastly, does any one know what the navigation model designation of the flip up screen unit in the X3 is called so I can do more research myself?

Sorry for the newbie questions. Appreciate any help that can be provided.