How would one update the Idrive? I updated my maps a few months ago on my own didn't know the idrive should be updated tooI will say this buy the update from a reputable source not off a torrent site and a GOOD QUALITY USB stick, also you might require an iDrive firmware update. If not the system will go into a boot loop"Starting Navigation System" and it will require a trip to BMW with no sympathy from them. I get a phone call a week asking about GPS updates/ my car is stuck in bootloop