I left my 530 connected to the PC overnight for a map update, said to take many hours. The internet died overnight. I have restarted the internet on the PC. But Garmin Express appears to be stuck, % done is no longer increasing. Is there anyway to kick it to start again?...or just disconnect the device by puling the USB cable (it no longer shows as mounted on the PC). and then presumably restart the map update at some time. Thanks!