Do NOT Update to Basecamp 4.7.0 – MapInstall 4.2.0 is broken!

MapInstall 4.2.0 is broken. You will get it by updating to Basecamp 4.7.0 - however also individual update can happen.

Garmin released a new version of Basecamp - 4.7.0 - in order to remove many features that were not in accordance with the GDPR regulation. Actually it's not that 4.6.2 is wrong here - it's that there were a few web services - that Garmin switched off - and those were interlinked into 4.6.2 - so that actually in 4.6.2 some functionality is not working anymore - I could on a quick check however not discover any actual difference otherwise in relation to the GDPR regulations - so 4.6.2 is no different in this regard to 4.7.0 - well and new privacy page/EULA of course).

The big problem is that Basecamp 4.7.0 also ships an updated version of Garmin MapInstall - and that version is broken in so far that it does not reliably/correctly send any maps in .img format anymore! This also applies to original older garmin maps.

On Windows instead of the actual map - only the overview map is sent - so you will have a nearly "empty" map. On OSx the problem with MapInstall 4.2.0 is that it will often crash while sending maps. 


Switch to the relevant tab for information on how to downgrade to Basecamp 4.6.2/4.6.3 on Windows respectively Mac OSx


Basecamp 4.6.2 - WindowsBasecamp 4.6.3 - Mac OSx


If you are a Windows user and upgraded to 4.7.0 you have 4 choices:

  • a) Only downgrade MapInstall to 4.0.4: In order to Downgrade - simply go to C:\Program Files (x86)\Garmin\MapInstall\ folder - then delete all the content of the folder but not of subfolders. Especially leave the "Maps" subfolder. Then Install MapInstall 4.0.4 - Download from here:


  • b) Downgrade to Basecamp v 4.6.2: it can be found here:
  • ATTENTION - you need to first uninstall Garmin Basecamp, Garmin Express, and any other Garmin Software via Windows "Add or Remove Software" except Garmin Mapsource (if you have Mapsource installed, do not delete it because you might lose data saved in Mapsource). As the user data of Garmin Basecamp, Garmin Express or Garmin Homeport is saved in a separate database - you will not lose it.Then Install Basecamp 4.6.2.
  • If you simply install 4.6.2 without uninstalling Garmin Basecamp and Garmin Express, Mapinstall will not be downgraded. Alternatively if you are afraid about losing data - you could first delete the content from C:\Program Files (x86)\Garmin\MapInstall\ folder (but not of subfolders) - then ONLY uninstall Garmin Basecamp via Windows system "Add or remove programs" - then Install Basecamp 4.6.2.


  • c) Use the plain old Garmin Mapsource for sending maps. Yes it still works if you know what to do - just note that it does not check any maps installed - so do not send maps twice. Also it cannot like MapInstall overcome the 4GB limit by splitting up maps that you are sending. Else of course it cannot correctly show the contourlines - but sending maps will work. Mapsource 6.16.3 can be downloaded here:



  • e) Use the create_gmapsupp_img_with_mkgmap.bat Script - this will only work for Maps <4GB however. And you can only install full maps. It is found in the map Installation folder. It requires Java JDK installation and java added to Windows path.
  • Alternatively you can use the create_gmapsupp_img.bat Script - however mind that address search is not possible then.


Actually right now only a part of the overview map is sent - it would be nice if Garmin could send the overview maps in general too - as right now they are only used on Desktop. Would actually speed up the GPS devices a bit - especially if you have no activated Basemap on your device.


Restore Tracks/Routes that you created in Basecamp 4.7.0

If you chose to downgrade Basecamp and already created tracks/routes with 4.7.0 you will need to restore them. While updating/downgrading does not delete any of your data - routes/tracks that you planned with Basecamp 4.7.0 will not appear in Basecamp 4.6.2 after downgrade - only routes/tracks that you had planned before the 4.7.0 update will show up.

To solve that go to:


(note AppData is a hidden folder - you may have to enable windows file explorer to show hidden files and folders)

Now you rename folder 4.6 to 4.6.backup and 4.7 to 4.7.backup

Copy folder 4.7.backup and Rename it to 4.6


In Case of Problems with Reinstalling Basecamp - downgrading MapInstall:

Deinstall All Garmin tools/programs via Windows "Change or Remove a Program". Then delete the Garmin Folder  in "C:\Program Files (x86)". Then Reinstall all Garmin tools/Programs and make sure to use old enough versions (as linked here).

IMHO you do not need to clean the registry of any Garmin entry, nor do you need to remove any Garmin folders that are somewhere else then Program Files folders (so far all Garmin tools are x86 and not 64 bit - it's possible this will change in future - so then also delete Garmin folder inside "C:\Program Files".


You can Either Downgrade MapInstall only, Or Downgrade Mapinstall and Basecamp

While windows users have good alternatives to Garmin MapInstall - on OSx the only real alternative is to use mkgmap.jar to create gmapsupp.img files. That is not so easy to do and requires Java JDK properly configured.

  • a) I Therefore strongly recommend to Downgrade to Basecamp 4.6.3 - To do so first Uninstall Garmin Basecamp 4.7.0 Then make sure that also Garmin MapInstall installation folder is removed/empty - If not uninstall all other Garmin software too. Then install Basecamp 4.6.3.


  • b) You could try to simply Install Garmin MapInstall 4.1.1. - I'm not sure if this works by just executing the installer. I think not. That means you first have to uninstall Mapinstall 4.2.0 - then Install only MapInstall 4.1.1 / MapManager 4.1.1. That way you could keep Basecamp 4.7.0 but I don't know why you would like to do so as Basecamp 4.7.0 is only a regression.


Basecamp 4.6.3 for OSx can be downloaded here: (here you find all Garmin Tools for  Mac OSx for download - if you miss something else)


MapInstall 4.1.1 and MapManager 4.1.1. for Mac can be downloaded here:


7 comments to Do NOT Update to Basecamp 4.7.0 – MapInstall 4.2.0 is broken!

  • jimlock

    Your advice worked great, I now have the full map on my GPS. Only one problem, when I installed from the downgraded BaseCamp, it said it would replace the old map with the new one, but I still see the old map listed under Setup Map on my Garmin; they added a “2” to the new file’s name to avoid duplicate file names. Any way I can get rid of the old one to save on memory?

    • extremecarver

      well by default all maps sent end up as gmapsupp.img inside /garmin folder (best on mSD card, but also look on /garmin of internal memory of your device). Some maps are like tmzmap.img or basemap.img – do not delete them. You could remove all gmapsu*.img and then resend the new map. Or look if maybe MapInstall called a map on memory like velomapXXX.img – Also you could see if you can remove the map from within Basecamp – usually it should list all installed maps once the device is connected with mSD inserted – then it shows the full name and you can remove with rightclick.

  • Ludwig Heitmüller

    bei mir ist das Problem aufgetreten, nachdem ich leider meinen Dakota20 gegen ein eTrex_touch_25 tauschen musste.

    Ich habe aufgrund Deiner Empfehlung das gute alte MapSource anhand des Links auf dieser Seite neue installiert.

    Die Übertragung der Karten auf die SD-Karte funktioniert. Leider lässt sich die Karte auf dem eTrex nicht anzeigen. Es gibt folgenden Fehlerhinweis beim Starten des Gerätes:

    ‘Karten sind nicht authentisiert. Für Unterstützung an der Verkäufer der Karten wenden’

    Gibt es einen Tipp für mich?

  • bernhard.jung

    Habe aber nach wie vor basecamp 4.6.2, wurde nie upgegradet. Der Fehler ist aber genau so wie du ihn beschreibst. Aber es macht ja keinen Sinn 4.6.2 zu deinstallieren und wieder zu installieren, oder doch?
    Gruß, Bernhard

    • extremecarver

      Es kann aber eben trotzdem sein dass due MapInstall 4.2.0 hast – beim starten von MapInstall wird man auch nach Update gefragt – sagt man da ja wird nur MapInstall auf 4.2.0 geupdated – daher bitte überprüfe doch einfach mal die Version (Rechtklick auf mapinstall.exe und via Details/Properties kannst du die Version auslesen).

  • Zenbert

    Viiiiielen Dank für den Hinweis mit dem korrupten Mapinstall durch uüpgrade auf BaseCamp 4.7.0. Ich habe natürlich das upgrade ausgeführt (man denkt sich ja, man tut was Gutes….) und stand 1 Tag vor der Urlaubsreise mit Schrottkarten auf meinem Edge 800 da. Dann hab ich Euren Hinweis gelesen und jetzt bin ich HÄPPY!!!! Danke!!


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