Follow the following trick to hack the setup file so that it can be used to install MapSource clean and fresh without any prior installation of MapSource.
- Download the latest MapSource from Garmin.
- Unpack or extract the content of the install file you have just downloaded using WinRAR, 7-zip or ALZip.
- From the extracted files, run MAIN.msi or MSMAIN.msi, and wait for it to complete
- Then, run Setup.exe.
Note: The sequence to execute Main.msi and then Setup.exe is important to avoid “Previous MapSource not found!” error.
Garmin MapSource now installed.
The trick is useful is you have lost or forgotten the MapSource installation disc and wants to upload and download maps and other data to Garmin GPS receivers, or for GPS addicts who needs Map Source to open files in gdb, mps, gpx and loc formats, create waypoints, routes and tracks; view maps especially free maps; save point, route or track data in gdb, mps, gpx, tab-delimited text and DXF formats; and export waypoint, route and track data directly to Google Earth.