Following on from the other question about setting the mapset name, the other problem is just having both files on the device at once. Both .img files were created using mkgmap using the --gmapsupp parameter. I have an existing "gmapsupp.img", and I've renamed the new test one that I am creating to "ajt2supp.img" and have also tried setting the description of it via '--description="AJT2D" '. Setting the description works, in that if that's the only mkgmap-generated map on the device that's the description I see from the maps available from "select map". However, if I have both the old "gmapsupp.img" and the new "ajt2supp.img"on the device I only see "OSM Street Map" (the old description), not "AJT2D". I'm guessing it's some other name or perhaps the argument order that's the problem. I've tried other name settings such as --family-id=3 --product-id=44 --mapname=63240002 --product-version=2 --series-name="AJT2S" --family-name="AJT2F" --area-name="AJT2A", as well as --description="AJT2D", but to no avail. Best Regards, Andy