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  1. #111
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    I Just installed the latest map on one unit I got extremely cheap... It's DNX4280BT and this is alpha&omega of what should you do with it in order to update the maps (in this case it's CN Europe 2019.2 NT). The problem was that this unit is not equipped with the mini-USB port for connecting directly to computer, nor it has SD card slot. Just USB-A female port for your USB-A dongle. I think it's the same for any similar device, with possibility to upload JVC, ASR and similar files on some newer devices. So, let's begin:

    1. Update Kenwood unit software (in my case, it was to 1.9) and Garmin software (to 4.5 on my unit).
    2. You need to collect the device's signature. In order to do that, find some empty 8GB USB and go to Garmin start screen, then "Settings", then "About" and you'll find "Update map". Click on it and the device will ask you for an empty USB in order to sign it. Follow the instructions and, subsequently, remove USB when done.
    3. Open Garmin express and perform simple, ordinary map update, so the root of your USB device will have Garmin folder and: GMAPSUPP.IMG, GMAPSUPP.UNL, GMAPSUPP.GMA and GarminDevice.xml inside of Garmin folder (ROOT/Garmin/GMAPSUPP.IMG, GMAPSUPP.UNL, GMAPSUPP.GMA and GarminDevice.xml). Delete GMAPSUPP.IMG and leave everything else intact.
    4. Generate the map using your Garmin Map Source software (I'd leave it on around 2.5GB, although GarminDevice.xml says it's got around 4GB free inside). Copy the newly created GMAPSUPP.IMG to the USB where you've deleted the previous file of the same name.
    5. Insert the USB to the unit, wait for the device to recognize your USB and starts to search media (5-7 seconds) and go again to "Update map" interface (not that you should ever have left "About page"). It will ask you to update. Click Yes, obviously and wait. It took somewhere about 25-30 minutes to transfer 2.4GB

    That's it...

    Cheers
    Last edited by peniko; 23rd May 2019 at 05:26 PM.

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  3. #112
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    I followed these instructions and it basically works.

    However, if I go into the engineering menu and look at the Navigation information, it says that JCV files are missing?

    What is the correct method to fix this issue?

    Thanks

    Edit: I figured it out. The files were missing! Imagine that. I found the correct files and put them on the uSD card and all is well.
    Last edited by RadiusMP; 13th April 2019 at 09:38 AM.

  4. #113
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    Default update works on a DNX5190 with 2019.10 NT NA. no special .unl or .gma

    Just successfully loaded into internal memory a 2019.10 north america unlocked map on a DNX5190 that had previously a 2012 map with no options from Kenwood/Garmin for a new map.

    First I updated the kenwood DNX5190 with the latest available firmware from kenwood site.

    I did not have any sample .unl or .gma files so just made 2 dummy files using MSword and renamed them gmapsupp.unl and gmapsupp.gma

    I used a blank thumb drive and let the DNX5190 write the Garmindevice.xml info file to it. To that garmin directory I added an unlocked gmapsupp.img of 2019.10 NT North America (2.802 Gb in size), and made two dummy files using MSword called gmapsup.unl and gmapsup.gma. Once those four files are in the garmin directory, the head unit happily loaded the map from the thumb drive when I selected update on the Kenwood. After completion, i reset the head unit and it now the map info shows it has the new 2019.10 map loaded.

    The DNX5190 does not have a SD card slot or rear mini USB. It only has the single USB port on a cable. I was surprised it accepted the dummy .unl and .gma files. I thought they might "brick" it. After loading the new map, the unit has just 296.5mb free space according to the garmindevice.xml file where prior to the 2019 map update it had 1.479 Gb free space.

    This site was a huge help in getting this to work and I joined just to post my success and help out by adding one more model to the list of units Kenwood says can't be upgraded, but obviously can if you know how.

  5. #114
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    I just updated my maps on my Kenwood DNX994S. Was on the original 2017 maps and loaded the 2020.30 NT North America maps. Using the method that stickweld shows. I renamed the unlocked map image file to gmapsupp.img and created two empty files: gmapsup.unl and gmapsup.gma. This was all done on an SD card. I did initialize the card on the head unit to create the Garmindevice.xml file. Thanks for posting this information!

    Jr!

  6. #115
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    Quote Originally Posted by IceMatrix View Post
    With my DNX7210BT works too
    Hello, do you still have the files to do this on the dnx7210bt? thank you

    Hello, who would still have the links of the files, unfortunately no longer available ... thank you

 

 
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