Ok, here's how I load maps to my 600. In topo, outline the map you want; right click on it and name it; on the right side of screen, click on empty square to put a checkmark in box;go to button on toolbar that looks like gps; click to download to hard drive; it might ask for serial number, enter it. It will save all the data from map. Now, if you want to load straight to 600 connect it and turn on, now go to magellan conversion manager, load map, click on your map,load. This works for me.