Hello 
I have a prebuilt gpsmapsupp.img file (if I got that right) that I built some time ago for a 60csx.
It contains CityNavigator with routing data, and also a custom topographic map, all in one image.
For the 60csx, I could just write that to the SD card, and that's the end of the story.
Now I have an older GPS that I'd like to load the same image to if that's possible.
It's a StreetPilot III with Garmin data card, and only a serial interface.
Is there a tool that will bypass Mapsource, and just serially send the prebuilt file?
I do own license for all of this. The image was originally done with my own CityNavigator,
and I can't actually remember how I got the extra custom map into the same image (maybe MapSource supported that).
Cheers, Brek.

I have a prebuilt gpsmapsupp.img file (if I got that right) that I built some time ago for a 60csx.
It contains CityNavigator with routing data, and also a custom topographic map, all in one image.
For the 60csx, I could just write that to the SD card, and that's the end of the story.
Now I have an older GPS that I'd like to load the same image to if that's possible.
It's a StreetPilot III with Garmin data card, and only a serial interface.
Is there a tool that will bypass Mapsource, and just serially send the prebuilt file?
I do own license for all of this. The image was originally done with my own CityNavigator,
and I can't actually remember how I got the extra custom map into the same image (maybe MapSource supported that).
Cheers, Brek.