NVD-W901 MAP Update Software Map Update for INA-W900/INA-W900BT is a paid map update for the Roadster 2.5's upgraded Infotainment center (IVA-NAV-10). I just installed it and it takes over 2 hours during which you have to keep the car on the entire time. It costs $100 and comes on a SD card. The update also upgrades the navigation application but other than a slightly different start screen (the Go to, Home icons are smaller), I haven't found anything different. I haven't had a chance to test it out to see if any of the POIs are updated but the upgrade works.