[hamster]

I’ve just bought a lovely 2012 v70.

I’ve down loaded the latest maps for the nav system. When ininsert the usb to upload the maps it says it’s going to take 3 hours to update the system. Is this normal?

Do I need the engine running all this time?
Not sure the ignition with stay on for that long without timing out or flattening the battery but if I start the engine midway through the process I don’t want to disrupt the download and corrupt it.