Oh, I'm sorry! I'm using the Nuvi 1300. It is so refreshing to not be handled as a "nube" with these basic questions. I suspect I'm trying to do something that can't be done. Here's the scenerio: I have both version 6.0 and 6.1 of the NavSat map. I have version 6.0 as GMAPSUPP.IMG in the map folder on the Nuvi 1300 and it shows and works just fine. I have version 6.1 in the map folder on the micro SD card as GMAPSUPP.IMG. However, only one map shows when I check to see which maps I have. Is the "non showing" of the SD card map due to the file structure and similarity with the GMAPSUPP.IMG file on the Nuvi 1300 hard drive??