I just got my XC90 Inscription this weekend and am trying to figure out if the version of the North American map I have is the most current. On the center unit it says 00.50.00.20 and when it looks online it says there are no updates. When I go to download to use USB it says the most current version is 31421316 for North America but I can't find a number like that anywhere in the car. Anyone know where else I should be looking? Thanks so much.