Do you want a better map for your GPS? You can use a map from OpenStreetMap on your Garmin GPS depending on the model of your device. You'll find several devices listed on the OpenStreetMap wiki. I'll demonstrate with a Garmin etrex Vista HCx, other models may vary.
Garmin made the unfortunate choice of using a proprietary data format for their maps. There are several ways to convert map data to Garmin format.
- It can be this easy for you:
- Acquire the map file you want
- Locate the file. OpenStreetMap contributors have premade garmin format files for you of OSM data in several places. Select the continent, country and possibly the region that interests you.
- Download the file to your computer. There may be several files from which to choose. Select the file with the
.img.zipextension, or similar.
- Unzip the file using the unzip utility provided by your operating system.
- Use the correct file nameChange the name of the file to
gmapsupp.imgif it has a different name.
- Connect the GPS to the computer
- Connect a USB cable to the GPS and computer.
- Put the GPS in USB transfer mode by selecting >> Main Menu >> Setup >> Interface >> USB Mass Storage. This will connect your computer to the memory card in the Garmin.
- Transfer the file to the GPS
- Copy gmapsupp.img to the
Garmindirectory on the memory card. Create a
Garmindirectory on the memory card if one does not already exist.
This article was originally published on Mon, 06/29/2009 - 20:10.