On the Zumo 660 the file gmapsup2.img doesn't work.
Since I don't need my Garmin US map I tried a few more things to load 2 separate maps. With the OSM map as gmapsupp.img I want to load Malsingmaps as secondary.
Malsing as gmapprom.img allowed me to select it, but then it wouldn't allow me to de-select it. No good, since the two overlap. On the display Malsing blocked out OSM in the border area.
Next, I tried Malsing as gmapoem. Similar, except there is no checkbox next to Malsing and OSM could not be de-selected any more, either.
I will need to fall back to the Mapsource method.
Regards,
Peter.
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