I have made my current gmasupp.img file using Mapsource with maps of Europe, Adria route, Hungary and SCG route. I was wandering if I can change the name of THAT file to gmapprom.img, leave it without the key (.unl file, because I have unlocked it in Mapsource), and add one or two more maps as gmasupp.img files with .unl keys, using Jetmouse keygen? Sorry, I'm a newbie for this