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  1. #1
    Join Date
    Sep 2015
    Cameron Park, California
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    Default Garmin Topo Maps - Help Requested

    I did a forum search looking for a "How to" or similar regarding Topo maps and apologize in advance if I missed something?

    I would like to understand what is involved with installing Topo maps? I have a Garmin 2720 that I just updated to the latest NT maps and would like to learn how to load, use Topo maps as I use the GPS for my motorcycle.

    Thanks in advance!

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  3. #2
    Garmin/GPS Systems GMod.

    Neil's Avatar
    Join Date
    Aug 2011
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    You've only got about 1.7GiB all up for maps on that 2720. You can have 2 detail maps gmapprom.img and gmapsupp.img, one can be a CN and the other a Topo. No problem either with 2 of the same [but then none of the other] for that matter. The problem in wanting to use a Topo is space. gmapprom is stored in region 49 and gmapsupp is in region 10. Those regions share space, so if you've got a quite big CN you won't have much room for a topo and vice versa. Using MapUpdater to load a purchased update of your factory loaded map via download will overwrite your gmapprom. You can also do this: [Only registered and activated users can see links. ], essentially the same as here: [Only registered and activated users can see links. ]. Using MapInstall to load the whole or only some parts [tiles] of a map from the PC Install version will overwrite your gmapsupp. You can also use SendMap20 to write a gmapsupp to region 10: [Only registered and activated users can see links. ].

    Unfortunately most Topo maps aren't available in a PC Install version and you're stuck only with the full image version. First determine the size of your intended topo and then look how much space you have left available on the 2720 before you go any further. As you know from the other thread about your Quest 2, there are other ways to send maps to these old 'region-only' units as well. It's also possible to combine the NT & Topo map images using [Only registered and activated users can see links. ] to then only have to send one map to the unit.
    'Thanking Posts' are banned. To thank someone, and/or to see hidden links and content, use the [Only registered and activated users can see links. ] button below left of the helpful post then refresh your browser [F5 key]. 'Thanking Posts' are banned.
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    [Only registered and activated users can see links. ] should make their first post as a new Intro Thread in [Only registered and activated users can see links. ].

  4. #3
    Vip Master
    Smulan's Avatar
    Join Date
    Oct 2010
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    The "problem" with the limited access to PC install versions of topo maps is in my experience not a big problem. I never use topo maps for navigating routes since that rarely works well, paths do not connecting to each other or to roads makes navigating erroneous. usually I set waypoints at strategic places and use the gps as "moving map" to find my way.
    Then you can reverse engineere the img with gmaptool and get a pc install from which you can select the tiles needed to be transferred to the gps. This is a workaround for old gps models with limited memory.



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