New – Premium Gmapsupp.img – directly for Garmin GPS units

As Garmin does not seem to fix MapInstall on Windows anytime soon - I've now also made all countries except Europe continent and Asia continent (they are too big) available as gmapsupp.img download - which after unpacking - you can directly move onto your GPS device.

Actually for Mac OS x - there is a new version of Basecamp 4.8.3 - which includes MapInstall 4.3.1 beta - and according to first info I have received - that seems to be fine and send maps without problems. If I don't here of problems soon - I will also update the articles on the website and remove the warnings for Mac OS x users.


Directly using gmapsupp.img downloads . you lose the possibility to only upload a part of a map to your device as you could do using MapInstall (or Mapsource for Windows users). The advantage is that you can very quickly change the layout (on both Windows, as well as Mac OS x or Linux), and that it's the quickest and easiest way.

If you want to use the maps for planning on your desktop - then you will need the Desktop map too or instead. Note: If you plan a route in Basecamp on your desktop - you should use exactly the same map on your device (so same date, same country - but Unicode/Non Unicode does not matter - so you could use Non Unicode map on your GPS device if needed, and Unicode map on your Desktop/Notebook)


The Gmapsupp.img downloads are available for all countries/continents except for Europe continent map and Asia continent map - which are simply too big.

The contourlines are packed into separate gmapsupp.img files - so when updating you do not need to download them again.

The downloads come with scripts included for easy changing of the layout. The scripts run on Microsoft Windows (cmd.exe) respectively Apple Mac OS x and Linux (bash). This way you can adapt the layout of both the contourlines and the maps themselves. For everyone who had problems with too thick or too thin contourlines on his Garmin GPS device - this opens up a quick solution.


The gmapsupp.img downloads are available for free to all active OpenMTBMap respective VeloMap Members.

6 comments to New – Premium Gmapsupp.img – directly for Garmin GPS units

  • Shercojm

    I am a new user of Openmtbmap and I am having a problem when I want to install part of my Europe card on my G¨S Garmin Monatana 680. I’m using Basecamp 4.6.2 and MapInstall 4.0.4, under Windows 10.
    I’m doing a little test card. The transfer is done normally and I see a file gmapsupp.img on my SD card. When I turn on my GPS I have the message “Can not Authenticate Mps. Contact content seller for help “.
    Could you help me please?

  • glaettlitinu

    Mein Basecamp wurde durch das Updateverfaren von App Store auf die Verion 4.8.3 gebracht. Dabei wurden die MapTools offenbar nicht aktualisiert. Herunterladen und installieren von BaseCampforMac_483.dmg bringt MapInstall Version 4.3.1 (ohne beta)

  • glaettlitinu

    Die Kartenistallation auf mein Garmin Edge 705 funktioniert einwadfrei.
    Mac OS x Mojave 10.14.3
    Basecamp 4.8.3
    MapInstall Version 4.2.0

    • extremecarver

      Bei Basecamp 4.8.3 sollte MapInstall in der Version 4.3.1 beta vorliegen – die Version 4.2.0 hat immer mal wieder Abbrüche gehabt beim senden größerer Karten auf Mac OS x. 4.3.1 scheint bisher okay zu sein. (Unter Windows ist der Fehler eklatanter – da dort mit MapInstall 4.2.0 leere Karten gesendet werden – sprich nur Übersichtskarte. Das fällt sofort auf).
      Falls du die Installation der gmapsupp.img Karten meinst – das geht auch ohne Garmin Programme – bzw haben die Garmin Programme damit nichts zu tun.

Leave a Reply