2007 X3 Nav

Ok, this is my 7th BMW that I've own.
Presently-
1998 528i 150K, owned for a decade, not one single issue
2011 R1200RT, first and only new BMW- just love it, but it has it's limitations here in the Nor-east
Finally, my new to me 2007 X3 with 53k miles.
Like to upgrade the navigation cartography if possible, just because it's built-in.
Thus far, it doesn't seem likely.
Only had it for a few weeks, just getting to know it, slowly.
Any help would be very much appreciated.

Reel-Job