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Unlocking maps for unpatchable device Montana 700i

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  1.     
    #11
    Ok thank you for information,

    Unlocking maps for unpatchable device Montana 700i

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    but the Topo Active is far from being as detailed as Topo Pro!

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    Unlocking maps for unpatchable device Montana 700i
  3.     
    #12
    FireFox58's Avatar
    Hi All! I would like to express my thoughts
    Montana 700 seems to have Encrypted Firmware, so unpatchable at the moment.
    TopoActive Europe 2020.10 probably work because they come from OSM source, no GMA is required.
    City Navigator (either NT or NTU), as well as Topo Pro Maps instead require GMA files to work. This issue is removed by Firmware Patch.
    You can try to load into Device Unlocked CN NTU 2021.10 Map along with gmapprom.gma attached.
    I don't guarantee this will work
    Please give feedback about any tries
    Attached Files Attached Files

  4. The Following 4 Users Say Thank You to FireFox58 For This Useful Post:
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    Akyta (29th August 2020), Garmin_Nuvi (29th August 2020), leogoto (3rd November 2020), Luzbel (7th February 2021)

  5.     
    #13
    Akyta's Avatar
    ...............
    Last edited by Akyta; 30th January 2022 at 01:25 AM.

  6. The Following 1 Users Say Thank You to Akyta For This Useful Post:
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    FireFox58 (29th August 2020)

  7.     
    #14
    FireFox58's Avatar
    As we can see, the only certainty is that there is no certainty.
    We always learn new things, tests are fundamental.
    I was almost convinced that the .GMA files were linked to the Map itself, instead they also have a link with the Device and/or the account.


    PS: the GMA file I posted is related to CN Europe All North Map

    Thanks for tests and feedback

  8.     
    #15
    Akyta's Avatar
    More research shows the Montana 7x0(i) firmware is encrypted...
    No patching currently possible until firmware is decrypted...
    I see a
    Link URL:
    Only the registered members can see the Link URLs. Please Login OR Register.
    in the *.gdc file header so this is probably currently impossible...
    Last edited by Akyta; 30th January 2022 at 01:25 AM.

  9.     
    #16
    Attempted this on an Alpha 200i which I suspect has the same issue. Didn't get it to work yet.

  10.     
    #17
    Hi,
    Is there any chance that one day we can use the unlocked maps in the new Montana 700/750 and Alpha 200?
    thank you

  11.     
    #18
    Has anyone managed to use unlocked maps in the Montana 700 yet ?

  12.     
    #19
    If the firmware is really encrypted, I doubt, that this will ever happen..

  13.     
    #20
    Looks like I will be sticking with my 276cx for now then

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