Hi,
i have the same problem as he,
Program start.

====================================================================
Reading file D:/WC/mapset.mp.
Wrong header (DSKIMG GARMIN), file D:/WC/mapset.mp.


File: D:/WC/mapset.mp, length 52520
File format errors (3)



There were errors, result is faulty.

End.
so i did what you have said "winhex
You can use Winhex.exe for the conversion.
Open the original image file, type CTRL+A (select all), CTRL+T, choose "XOR", put value "FF" and process. After that you need to change ASKIMG to DSKIMG in the file header."
but i didnt understand the part of "ASKIMG to DSKIMG in the file header." "
could you explain it to me please?
i would use this "NT" map for Nroute or mapsource. (the map comes unlocked.)
Thank you!