wah..thanks alot..really helpful..now i know what my mistake already...so it need to be rename the map 1st..finally...my garmin can be use already..tq catymag...btw...can i know what is the meaning of JCV?what the difference between the map IMG, 3D Landmark IMG and JCV? for now i only copied the map and 3D landmark only..not yet for the JCV...do we need to rename the 3D lanmark IMG also?if so,rename to what?