I just purchased some topo maps from MapSelect and loaded the files onto my MicroSD card, both in the root menu and in a file called RasterMaps. In both cases one I restart the unit there is no difference in my maps. No contour lines appear, no greater detail, nothing. I am running v1.4 firmware, the files were unzipped prior to loading them, all of the settings on the GPS appear to be the necessary settings (high detail, contour lines on, hybrid view, zoomed into no greater than .5, etc.) The unit has no problems pulling my gpx and loc files off of the card, so I know that the card is working and the device is able to talk to it properly.
Any ideas would be greatly appreciated.