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Thread: Nuvi 255 multiple maps

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    Premium Member Kevaclone's Avatar
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    Default Nuvi 255 multiple maps

    So it will accept GMAPSUPP maps only
    so I can have a GMAPSUPP on the device and one on the SD card
    is there another way to add extra maps GMAPSUP2 etc. doesn't work and not having any luck getting GMAPPROM to work either
    is using GMAPTOOL to combine different maps into one the only way to get more than two maps working
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    Crazy Diamond
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    Quote Originally Posted by Kevaclone View Post
    So it will accept GMAPSUPP maps only
    so I can have a GMAPSUPP on the device and one on the SD card
    is there another way to add extra maps GMAPSUP2 etc. doesn't work and not having any luck getting GMAPPROM to work either
    is using GMAPTOOL to combine different maps into one the only way to get more than two maps working
    If your GPS does not support multiple .img files on card or internal memory apart from the base map, then MapSource or GMaptool are your best if not only option for combining them.

    Gmaptool is really easy & fast to combine .img files, I use it for my Etrex that only supports 1 gmapsupp on MicroSD card.
    Cheers, Tiny
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    The information is out there; you just have to let it in."

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    Premium Member Kevaclone's Avatar
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    I did use Gmaptool to combine the two OztopoV3 maps plus the BlueChart Pacific map into one .img. they all show up and can be enabled/disabled. Marine map on the Nuvi seems to work ok with all Nav markers and tides/depths etc. visible

    Oztopo 3 roads and contours show up

    looks like I can only have two maps
    Strange that GMAPPROM.img files don't show. I had to rename the 2012.4 map to GMAPSUPP.img before it would load
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    Crazy Diamond
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    It is strange that you can't get gmapprom.img to load as this would be the installed map file for your unit. I'll assume that you found a gmapprom.img on the device internal memory & replaced it. That really should work, however, if you have to rename it gmapsupp.img to work then do so.

    Look on the bright side, at least you know how to combine the maps, install them, select them & your 255 works, be happy.
    Cheers, Tiny
    "You can lead a person to knowledge, but you can't make them think? If you're not part of the solution, you're part of the problem.
    The information is out there; you just have to let it in."

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