Probably takes a couple of hours once the USB is in the car. Best thing to do is put USB in car and it will do update while it is charging or being driven. So no need to sit in car. If you are driving the vehicle you can continue to utilise the old map as it updates. You will get a few little messages on your screen as it updates so really easy.How long does the update take to install, do you have to remain in the car while it’s updating? Just downloaded it which took a long time for both the maps.
I did think BMW generated some buzz around LCI cars getting OTA (over-the-air) updates, but either this was software only and not mapping or it's never worked very well. Ours is a pre-LCI car, so it's going to be via USB all the way for us!Isn't it supposed to update itself over WiFi?