By the time the download completes after a couple of hours at 56Kbaud and waking up the computer that went to sleep during the long download, I get a corrupted .Ini file that will burn, but the NAV unit wont load it. I did notice in the radios display that it picked up on 6 satellites and 30 almanacs were showing having been loaded. I may try a reset of the unit and hunt for factory disks.