I found out one missing information about the 3byte .typ files. 3 byte typfiles are addes as v2type=XXXXX instead ov type=xx00 I'll confirm this later, but it looks like that if we use v2type=1160d then garmin handhelds (with typ support) will interprete this line as Digital Elevation Model DEM. This could be the key to not only see contour lines, but also have a DEM. See the following articles in Spanish for more information about it (use google translate if you don't understand Spanish too well): http://gpsando.blogspot.com/2008/10/iii-trasteando-de-nuevo-con-el-garmin.ht... http://gpsando.blogspot.com/2008/06/trasteando-con-el-garmin-topo-espaa-v3.h... http://gpsando.blogspot.com/2008/09/trasteando-de-nuevo-con-el-garmin-topo.h...