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  1. #1
    Junior Member
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    Default Garmin Montana 650t GMA protection work around.

    I don't know if anyone else has had the problem where you get the "unable to authenticate maps etc" message when loading but the latest Firmware update to 5.9 seems to have fixed the issue.
    There seems to be a million work arounds with keygens and the like but this is by far the simplest way to do it:
    GCD Update Procedure

    Use the links in Firmware History to download the zipped file for the version you desire
    Unzip the downloaded archive and extract the gcd file
    Rename the gcd file to gupdate.gcd
    Connect the Montana to your computer and enter USB Mass Storage Mode
    Copy the gupdate.gcd file to [Montana]\Garmin\gupdate.gcd
    Disconnect and reboot the Montana
    Once the update is completed, the GPSr will delete the gupdate.gcd file

    Credit to
    Code:
    Please Login or Register to see the links
    for the instructions

    So far no other stability issues so only time will tell.
    Last edited by catymag; 19th June 2014 at 16:02.

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  3. #2
    Junior Member
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    Default

    Its working

  4. #3
    GPSPower Helper

    dasilvarsa's Avatar
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    Feb 2011
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    Default

    Quote Originally Posted by itcheybum View Post
    I don't know if anyone else has had the problem where you get the "unable to authenticate maps etc" message when loading but the latest Firmware update to 5.9 seems to have fixed the issue.
    There seems to be a million work arounds with keygens and the like but this is by far the simplest way to do it:
    GCD Update Procedure

    Use the links in Firmware History to download the zipped file for the version you desire
    Unzip the downloaded archive and extract the gcd file
    Rename the gcd file to gupdate.gcd
    Connect the Montana to your computer and enter USB Mass Storage Mode
    Copy the gupdate.gcd file to [Montana]\Garmin\gupdate.gcd
    Disconnect and reboot the Montana
    Once the update is completed, the GPSr will delete the gupdate.gcd file



    So far no other stability issues so only time will tell.
    Do you Downgrade the Firmware ?
    The difference between stupidity and genius is that genius has its limits.
    Albert Einstein.

  5. #4
    ☼ADMIN☼
    catymag's Avatar
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    Nov 2007
    Location
    light side
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    23,595
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    5317

    Default

    Montana software 5.60 was buggy, news here
    [Only registered and activated users can see links. ]
    and following.
    Oregon 600 had the same, then fixed.
    [Only registered and activated users can see links. ] post 127 and following.
    Some devices got bricked too with these firmware. Both (Montana and O600 sw have been withdraw from Garmin server after few days)
    Montana (WebUpdater) software version 5.60 (withdrawn by Garmin on Feb 3
    Be careful to reverse to buggy previous firmware.
    Newer Montana and O600 firmware don't have protection, so we don't need any workaround actually.

    [Only registered and activated users can see links. ]
    [Only registered and activated users can see links. ]

    [Only registered and activated users can see links. ]
    You have to navigate to get to the good.
    Nuvi1250/Nuvi 34xx/Nuvi 2200/Nuvi 66/Oregon 600/Galaxy S5 MM 6.0.1/TomTom GO/iGO Nextgen Avic,Basar,Isr.Gift/Navigon
    Please don't flood my pm box with questions you can post on forum!! You won't hear back from me.

 

 

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