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  1. #11
    GPSPower Helper

    dasilvarsa's Avatar
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    [Only registered and activated users can see links. ]

    Above you can find previous versions of firmware.

    First backup your complete nuvi including the hidden /.system folder (Wise thing to do on a monthly basis)
    Then delete gupdate.gcd inside the hidden /.system folder (this file is your 7.9 firmware file)
    Download the 7.80 gcd file from the link supplied ubove (nuvi24x5and25x5_GCDFile__780.gcd)
    Connect your nuvi to the computer make sure that it is set to mass storage mode.
    Open the Gdc file with Webupdater and it should transfer the file to your nuvi.
    After it has finished you need to disconnect nuvi from PC, Switch it on and it should flash as per a normal update.

    Another method is to rename nuvi24x5and25x5_GCDFile__780.gcd to gupdate.gcd and then copy the file to the hidden /.System folder.
    After Nuvi is switched On it will flash.

    There is a third method which is to use updater.exe and to flash in pre-boot mode. (This is used mainly for bricked Nuvi's and is not necessary at this stage)
    Last edited by dasilvarsa; 1st June 2013 at 10:54.
    The difference between stupidity and genius is that genius has its limits.
    Albert Einstein.

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  3. #12
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    catymag's Avatar
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    @minsik

    Post moved to proper existing thread
    [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.

  4. #13
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    I try to follow the istruction to downgrade the firmware of Astro 320, but it's not so easy..
    Could someone help me and tell me step to step what I have to do?
    Many thanks

  5. #14
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    catymag's Avatar
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    Quote Originally Posted by gaviante View Post
    Could someone help me and tell me step to step what I have to do?
    Step by step instructions are in starting post, what's the problem?
    [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.

  6. #15
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    hi
    just bout the astro 320 and 2xdc50 bundle.
    cant seem to get the handheld to connect to the collars once i swithch the handheld on it says:
    radio funtion is disabled,Frequency is not Authorised for this location.
    im in the uk,northern ireland. any help would be appreciated.

    thanks

  7. #16
    Garmin/GPS Systems GMod.

    Neil's Avatar
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    @fra1
    If you mean you're using a US 320 and DC50s in UK that would be illegal. The function was stopped in V3.60 firmware [Disabled dog tracking when used in countries for which the radio frequencies are not authorized]:
    Code:
    Please Login or Register to see the links
    You can downgrade to V3.40 and try that:
    Code:
    Please Login or Register to see the links
    but be aware that if you get caught there maybe repercussions legally:
    Code:
    Please Login or Register to see the links
    '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.
    Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.
    [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. ].

  8. #17
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    How do you downgrade the firmwire?? I have downloaded the v3.40. from the link.

    What do I do next to downgrade mu Astro 320??

  9. #18
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    did you fix it ?

  10. #19
    Garmin/GPS Systems GMod.

    Neil's Avatar
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    For specific help with rolling back astro 320 please read and post in this thread if necessary: [Only registered and activated users can see links. ].
    '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.
    Please don't spam. Posts serving no purpose other than to thank or to ask about hidden links are trashed or deleted, it's GPSPower's policy. Please don't spam.
    [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. ].

  11. #20
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    still have problem with asto 320 firmware downgrade . i download the older version but even i follow the instractions it wont flashing with the old version .....please help !!!

 

 
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