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  1. #1
    Junior Member
    Join Date
    Jul 2011
    Rep Power

    Default Garmin 421S marine unit

    I have a G2 Bluechart "borrowed" from a friend and was hoping to make it work in a garmin 421S marine unit. I ran the IMG file through the Fast IMG Unlocker (from here) and it seemd to do something though I dunno what exactly. I ran the same original IMG file through "Unlock BlueChart g2 & g2 Vision Maps.rar" downloaded here, and the script file kept saying that it could not find a locked IMG file? I have not been home to try the SD card out in the 421S unit as yet so maybe the Fast Unlocker did the trick. Question is would it matter that the IMG mapset I have is no longer issued from Garmin, VUS023R-Seattle? I think it has been replaced with a larger mapset covering more of Seattle to Canada. Thanks for any insight

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  3. #2
    catymag's Avatar
    Join Date
    Nov 2007
    light side
    Rep Power


    [Only registered and activated users can see links. ]
    should unlock it correctly-
    Cant give any opinion about a BC we dont know, if you share it we could tell you something more precise
    You have to navigate to get to the good.

    [Only registered and activated users can see links. ] Password for my files: gpspower.net
    Please don't flood my pm box with questions you can post on forum!! You won't hear back from me.
    Galaxy S5 Kitkat 4.4.2 / Nuvi1200->1250 / Nuvi3790T->34xx / Nuvi 2200 / Nuvi 66 / Oregon 600




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