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Thread: Multiple maps on SD

  1. #81
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    Re: Multiple maps on SD

    iron1899,
    Hope this helps:

    From Garmin:

    What is the largest size microSD card I can use with my eTrex 20 or 30?

    05/22/2012

    The eTrex 20 and 30 have an expandable memory slot into which a microSD* card can be inserted. This card provides the ability to install detailed mapping to enhance the device's internal basemap.

    It is recommended a standard speed card, no larger than 32 GB, be used in order to get the best performance from the device. Class 4 to Class 10 is considered standard speed.

    While considering memory limitations, another limitation is the number of individual mapping segments. Roughly 3,000 mapping segments can be transferred to the eTrex 20 or 30.The eTrex will pick and choose which map segments to show when the map segment limit is surpassed. It is suggested to transfer additional mapping segments to another microSD card.

    *While any microSD card brand should work, Garmin has only tested more common brands such as SanDisk and Kingston.

    ++++++++++++++++++++++++++++++++++

    Garmin used to allow only one extra map in addition to the supplied basemap, and it had to be called 'GMAPSUPP.IMG'. They dropped that limitation in the Dakota / Colorado / Oregon series, and now you can use several maps in the 'GARMIN' folder on the memory card, with any file names, provided that the files are in Garmin map format and the file names have the '.IMG' extension. (Using a card reader with a Class 10 MicroSD will transfer map IMG's much faster than going through the etrex 20)

  2. #82
    babj615 is offline Corporal
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    Re: Multiple maps on SD

    Quote Originally Posted by iron1899 View Post
    Hi, I have a Garmin etrex 20 and and a 32GB micro SD card. I'd like to put multiple maps on the SD card. Can I just add the .img files straight to the SD card, or do they need to be organised on the card in a particular structure?
    They must be in the [uSD Card]\Garmin\ directory.

  3. #83
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    Re: Multiple maps on SD

    Hi All,

    I have NUVI 760, updated the firmware today and found what support for a second map on an SD card was added in latest version.
    Garmin: nuvi 7xx (GCD file) Updates & Downloads
    I tried to put second unlocked map on SD card with names gmapsupp1.img, gmapsupp2.img, gmapsup1.img, gmapsup2.img and gmapprom.img.
    No success. Does anybody know how I can use it?

    Thanks

  4. #84
    bjjfc's Avatar
    bjjfc is offline Global Moderator
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    Re: Multiple maps on SD

    @big_kolm
    try gmapsupp.img, put in sd card\Garmin folder.

  5. #85
    Berin is offline Private
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    Re: Multiple maps on SD

    Hi All, new to this. I have a Garmin Montana, and an SD card with GB Discoverer. On the Device I have the following files:

    Device\garmin\gmapbmap.img (basemap?)

    Device\garmin\gmapsupp.img (worldwide Autoroute DEM basemap?)

    Device\garmin\OSM-Morocco.img (OSM Morocco, transferred using mapinstall)

    On the SD card I have:

    SDcard\garmin\gmapsupp.img

    SDcard\GBdiscoverer (empty folder)

    I'd like to add CN NT 2013.3 UK to the SD card (1.12gb free of 3.68gb), can I do this without losing my GB discoverer maps?

    thanks,

  6. #86
    kar1zma is offline Private
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    Re: Multiple maps on SD

    is it necessary to rename the maps to gmapsapp.img to work

    i downloaded new maps but they dont work
    its named gmapprom.img the older maps are named gmapsapp.img

    should i rename and try


    the older maps also had a .unl file
    i didnt find any .unl file when i downloaded my new maps
    what is this file
    do i need it

  7. #87
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    Re: Multiple maps on SD

    Does the Garmin 255 support Multi maps? Like USA+Canada on Garmin + Portugal/Spain on SD


    Thanks

  8. #88
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    Re: Multiple maps on SD

    gimana cara menggunakan peta ct nav + topo srtm sea + bluechart g2 di nuvi? mohon saran..soalnya peta2 itu saling numpuk gak jelas kalau dipasang bareng2, tp kalo di 62s gak masalah..Tengkyu

    how to use ct nav + topo srtm sea + bluechart together in garmin nuvi? mine is 3770? there's a problem to show them together, but in 62s there's no problem.
    i write it with gmaptool setting it draw priority and transparency but the result isn't good enough..any comment please..thank's a lot

  9. #89
    Daniel Chan is offline Corporal
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    Re: Multiple maps on SD

    anybody can share wit me ASIA map???

  10. #90
    AthenaCoatley is offline Corporal
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    Re: Multiple maps on SD

    Thank you as it is very informative...

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