JaVaWa GPS-tools
JaVaWa Device Manager
version: 3.8 / date: 2015-02-21
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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.

You can secure contents of your device (or SD card) through a backup, and restore it later.

JaVaWa Device Manager also offers the possibility to delete certain non-essential files to make room for the ever-expanding maps, you can install different types of files while JaVaWa Device Manager ensures that they are put in the right place, and you can customize certain properties of maps.

Finally it is possible to create a virtual copy of your device; this is practical if your map was delivered only on the device or on a SD card, or when the programs of Garmin don't allow you to install an update on your computer anymore. With a virtual copy it isn't necessary anymore to connect the device, and it runs faster too. More info here.

Why use JaVaWa Device Manager?

Garmin GPS devices support the use of more than one map; there is a large range of maps available, both paid and free.
But it isn't made easy for the user:

In a follow-up to the practical management application JaVaWa GMTK for maps on your computer, now there is a manager for your device!

Screenshot JaVaWa Device Manager

Which devices does it work with?

JaVaWa Device Manager can handle all modern Garmin devices that support the USB mass storage mode. This is indicated by the fact that after connecting the device to your computer one or two drive letter(s) will be assigned (Windows), or that one or two icons appear on the Desktop (Mac).
This includes the following devices:

JaVaWa Device Manager does NOT work with devices that do not have a USB mass storage mode, for example older models like the Geko and the Street Pilots. This also applies to the recently introduced Monterra.

1)Note that with certain changes such as renaming or moving files on these devices, some or all maps that where deactivated will be activated automatically, sometimes even in every profile! (this varies by model)
Having multiple maps active will slow down the device and has adverse effects when using routes, so always check the settings on your device after making changes.
2)Some older devices such as the GPSMAP 60/76 and the eTrex Legend/Vista also have a USB mass storage mode, but with these devices it cannot be determined what type it is. Such a device (or rather the SD card in it) is treated like a SD card in a card reader: as a generic device where no checks are performed on what file types it supports, and no check whether a backup that you want restore to it, belongs to it.
This means that JaVaWa Device Manager enables you for example to put GPX files on the SD card, while the unit doesn't support that. When restoring a backup you should take extra care not to restore the wrong backup.

Most devices do connect in USB mass storage mode automatically.

A final point of attention: a locked map is always associated with the device ID, or in the case of a pre-installed map on an SD card with the ID of that SD card. JaVaWa Device Manager can retrieve the device ID from modern devices, but not from older devices as specified above. Also, the ID of an SD card cannot be retrieved.
In those cases JaVaWa Device Manager can determine that a map is locked, but not whether it is unlocked for the device or SD card. You will see a warning, but that doesn't mean that the map does not work; you can only check that on the device itself.
3)Some new nüvi's and the zūmo 340/350 do not connect in USB mass storage mode out of the box, but these use the MTP protocol. This way JaVaWa Device Manager cannot manage the files on your device. Fortunately, these devices can be switched to the USB mass storage mode. For example, with the nüvi 2595 it works like this: go to the volume screen and press & hold the top right corner for several seconds; then you will get a configuration screen. In this screen go to "MTP Settings", select "Mass Storage" here and select "Save".


In the development of JaVaWa Device Manager there was much attention for the safe handling of the files on your device. The program has been tested with various devices, but Garmin has a very wide range of models...
Examining your device with JaVaWa Device Manager is safe, but operations that alter the contents of your device (installing, (re)moving, move, renaming or restoring files) can have adverse consequences. Please read the manual carefully, make a backup before you change anything, and if in doubt you should consult an expert.

What or who is is a Dutch organisation that organises courses where you can learn to work with a GPS and the software that is associated with it. Group or private courses, indoor and outdoor, for novice and intermediate users, but also as a workshop for your organisation/association. They run a helpdesk for users having problems with GPS-software on their computer. Not only when the software doesn't work right, but also when creating routes and/or tracks doesn't work out as it should. You will get hints and tips, and when necessary (and desired) they will control your computer remotely to get the software and maps in working order.



Version Changes
  • Added extra check on destination path when installing IMG files.
  • Added support for new BaseCamp symbols.
  • Fixed bug in virtualisation routine.
  • Fixed trashcan (de)activation scripts.
  • Prevented opening file manager window behind main window.
  • Fixed report bugs.
  • Added extra check for backup destination.
  • Extended timeout period when sending report to the server to compensate for large reports in combination with a slow internet connection.
  • Added detection of disturbance of scan process by external influences.
  • Fixed problem with scanning virtual device.
  • Added full support for the GPSMAP 64.
  • Improved support for Active Routing files.
  • Improved compatibility with OS X Mavericks.
3.3Fixed problem in v3.2 (Windows).
  • Windows: Removed WSH dependency.
  • Fixed problem with removing FIT items.
  • Improved support for folder names with special characters.
  • Mac: dropped PowerPC support.
  • Solved problem with displaying the map coverage of certain maps.
  • The file manager window for GPX files now shows the total number of routes, tracks and waypoints too.
  • Fixed problem when installing a img file in the case that a file with the same name already exists.
  • Fixed incorrect warnings about double map segments with certain maps.
  • Fixed bug that was introduced in version 2.8 (large files weren't recognised anymore by JDM)
  • Added option to set the map projection angle in BaseCamp.
  • Added support for the Recreational Map of Europe v4.
  • Improved support for ActiveRouting files.
  • Fixed bug when trying to show the coverage of certain maps.
  • Modified scan routine to avoid problems with certain characters and corrupt files.
  • Solved bug that occurred when viewing the contents of a GPX file.
  • Fixed problem with installing base map on certain devices.
  • Added option to virtualize devices.
  • Minor bugfixes.
  • Some minor bugfixes.
  • Resolved bug that occurred when showing info of img files with multiple maps.
  • Sorting of map made to match JaVaWa GMTK.
  • When displaying map coverage double map segments are shown in red.
  • Bug fix for mapcoverage of maps with segments near date line.
  • Bug fix: the program did check the wrong segment code...
  • Added option to retrieve the service history from the zūmo 340/350.
  • Displaying waypoints from the Edge 800 on the map with the correct symbols.
  • Improved checking for double map segments.
  • Bug fix: Disabling "Manage maps" button when tere are no maps to manage.
  • Bug fix: No more warnings about a missing basemap when a device hasn't one by default.
  • Added possibility to show the contents of FIT and TCX files on a map.
  • Mac version only: the disk eject procedure has been modified so that a custom drive icon won't be erased anymore.
    Owners of both a Montana and a Mac: read the info at CleanEject!
  • Bugfix: gmapbmap.img was incorrectly marked as modified.
  • Added option to change map names.
  • Fixed bug in file manager window.
  • Fixed compatibility with OS X Mountain Lion.
  • Added support for 'ActiveRouting' maps.
  • Added option to view the contents of GPX files on a map, and to remove individual items (routes, tracks, waypoints) from those files.
  • Modified display of the number of map segments (active/inactive).
  • Changed method of checking locked maps.
  • Added possibility to move files that normally aren't moveable (e.g. basemap) when they reside in the wrong folder to the correct one.
  • Fixed bug that wrongfully validated certain invalid folders.
  • Solved bug that occured when viewing the map coverage of certain maps.
  • Modified disconnection procedure for Montana (Mac version only)
  • Built in option to clear the BaseCamp caches
  • Added possibility to change the visibility of 3D files in BaseCamp
  • Prevented possible incorrect error messages concerning 3D files
  • Minor translation errors corrected
  • Added option to check for corrupted data files
  • More manageable file types
  • Fixed some minor bugs
  • Revised manual
  • Translated in French
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