Installation on desktop computers

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To use the Openfietsmap on your desktop computer, Garmin's mapbrowser Basecamp or Mapsource is required. Only with this software, you can view the map, make and edit tracks and routes, add waypoints etc and send parts of the map to your Garmin receiver. Please note that Mapsource has been discontinued, but for older computers still recommended.

Instructions for Openfietsmap Benelux (Full/Light), Windows version:

      • Download from this site and unpack it. Run the setup.exe file (the gmapsupp.img is also needed so don't move this file to another place!). It will automatically install the map in Basecamp or Mapsource, default is the c:\garmin\openstreetmap folder but any other folder is possible. Depending on your Windows configuration, you must run setup.exe as administrator.

Other OFM versions (Germany, Europe, Alps etc) with (dd-mm-yy_pc).zip file

      • Unpack this and place the folder to a location of your choice, e.g. C:\Garmin\Maps\OFM_country_name. Run install.exe to install the map for Mapsource/Basecamp. You can safely move the map later to another location and run install.exe again to update it in Mapsource's register. Depending on your windows configuration, you need to right-click install.exe and run as Administrator.

Installing a gmap (Mac OSX) version under Windows

An alternative way to install the map under Windows is to use the gmap version. This is the default format that Garmin now uses to install the maps. Big advantage is that the map details are not longer kept in the windows registry, but only copied in a default Garmin map. Disadvantage is that this doesn't work with older Mapsource versions. OFM versions that have a (dd-mm-yy_pc).zip version are installed with Javawa's Mapconverter. To install OpenFietsMap's Benelux (gmap).zip, follow this procedure:

    • Unpack OpenFietsMap (gmap).zip and move the OpenFietsMap (BNL).gmap folder to the default Garmin map folder. The location of this folder depends on the Windows version:

      • C:\ProgramData\GARMIN\Maps or

      • C:\Users\{user}\AppData\Roaming\GARMIN\Maps (hidden folder!)

      • C:\documents and settings\all users\application data\garmin\maps

You can also put the map on another folder or drive, make a shortcut and place that shortcut in one of the folders above.

Uninstall the old version first (remove the gmap) or by uninstalling it if it is installed on the old way with the setup.exe in the windows register.

Instructions for Mac IOS

    • Make sure Basecamp is installed and closed; Also MapInstall and MapManager for the Mac must be installed.

    • Unpack OpenFietsMap (gmap).zip

    • Double-click on the gmap folder to run Garmins Mapmanager or

    • start Garmin Mapmanager and find the OpenFietsMap (gmap) folder

    • to install it

Installation on GPS devices

You can do this manually, or via Basecamp/Mapsource

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Please note that Micro SD cards are in FAT32 format, exFAT formatted cards are not compatible and should formatted in FAT32 format!

Copy the gmapsupp.img file

    1. Download the file and unpack the zip file

    2. Copy the gmapsupp.img file to a garmin folder on the micro SD card or on the internal flash drive of the GPS. Putting the map on a removable Micro SD card is recommended, in case of errors on the map you can have problems with booting the device.

    3. On the latest garmin units you can choose a different name for the img file, and install more maps. With older units like Etrex Legend/Vista or GPSmap 60 can only read one gmapsupp.img file. To install more maps, please use Mapsource or Mapinstall.


    • In Basecamp this works via the Mapinstall programm


    1. Select map area

    2. Drag with your mouse a box around the whole country (or a selected area)

    3. In the list box you can see the selected maps.

  1. Make sure routing is activated!

    1. Mount the GPS or a SD card to your pc and send the selected maps to your device.

  2. Be careful: Mapsource always use the same mapname (gmapsupp.img) when writing on the SD card so existing mapsets with the same name are overwritten!

Maintainance of maps

Javawa's GPS-tools are highly recommended to maintain your maps on desktop or GPS device

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Javawa GMTK

JaVaWa GMTK is software for map maintanance on your desktop computer. It can help you installing the map in the right folder. GMTK enables you to install these maps. It will check that no existing map will be overwritten, and after installing new maps, GMTK will perform a check for possible file errors and conflicts with other maps.

Javawa Device Manager

JaVaWa Device Manager helps you to manage the contents of your Garmin device and accompanying (micro) SD cards in an easy way. The program performs an exhaustive check, reports potential conflicts and provides a wealth of information about the maps in your device or on your SD card.

Download or Installation problems?

In this section common problems are discussed as anti-virus false positive warnings, corrupt zip or image files and maps that are not visible on the GPS.

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Problems with downloading

    • Disable the anti-virus software temporarily when downloading the files, some virus scanners (Norton) have problems with the install.exe or setup.exe file (see below)

    • Use download manager to increase the download speed or to resume a partial download that is not finished without losing data

    • Try another browser to download the files or clear the cache first

Anti-Virus (false positive) warnings

Your anti virus software might complain about the installer.exe / setup.exe files and will block it or delete it. This is a false positive warning (confirmed by Avast).

If you are not sure, you can download the gmap (Mac OSX) versions instead, it also works under Windows and doesn't need to be installed (just ocpy the files to the right folders).

Can't extract or corrupt zip file?

  • Try downloading it again. It is likely that the previous download has not been succesfully completed

  • The extract software is not compatible with large files? Try to extract the zip file with 7-zip

  • Disable / check your anti-virus settings

Windows cannot open image file (image file corrupt)

This is a common problem when trying to open a gmapsupp.img file with Windows: it does not recognize the Garmin format! Do not click the file to open it, it just don't make any sense. You can either copy it to your device or read it from micro SD with Basecamp.

Issues with installing maps on the Mac?

On Javawa GPS-tools a few solutions are described to solve installation problems on the Mac (in Dutch):

Problemen met installeren van kaarten op de Mac

Other installation problems?

  1. Never install the map when Mapsource or Basecamp is opened. Try to reinstall it when they are closed.

  2. Use Javawa GMTK to check if the maps are installed properly

Maps are not visible on the GPS?

  1. Make sure the map is activated in the map setup menu.

  2. Maps need to be stored into the correct location (usually a folder called 'garmin')

  3. Don't copy different releases of the same maps or just too many map tiles onto the device (there is a maximum!)

  4. Don't activate other maps (except the Basemap, this can always be activated)

  5. Do NOT copy several versions of the same mapset onto SD card or GPS memory

  6. Check your SD card with Javawa Device Manager to analyse possible conflicts

Map details missing on the GPS?

  1. Zoom in for more details

  2. Check the display of the map, make sure the mode is set on Day instead of Auto or Night

  3. Check in the Marine settings if the Marine Chart mode is OFF

  4. Turn shaded relief OFF in the advanced map settings

  5. Try higher detail settings in the advanced map settings or check the zoom levels

  6. Check the map on if the details that you are looking for are visible

  7. Check if the micro SD card is formatted in the right way (FAT32)

  8. Check if your device can handle large memory cards