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  1. #51
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    Once again, thanks for the information. I read the posts and their individual links and tried to copy those techniques as much as possible.
    I ran GPSMAPSerieswithSDCard_20170825.exe which placed GUPDATE.gcd and the folder “updates” on a blank card. I placed it in the machine and held the power button down until “Transferring to Recovery Region” appeared. I released the power on button at this point. After 15 or 20 seconds, the machine started the update process which still ended with software version 11 still installed.
    I noticed in message #11 that GUPDATE.gcd is the only file that should be on the card, no “updates” folder. I tried this, but nothing would happen until the “updates” directory was returned.
    Also, I’m wondering if running GPSMAPSerieswithSDCard_20170825.exe is what I’m supposed to be doing. I’m getting the impression that files are supposed to be extracted from the executable which is probably way beyond my skill set.
    Thanks again!

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  3. #52
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    Quote Originally Posted by aktroller View Post
    I noticed in message #11 that GUPDATE.gcd is the only file that should be on the card, no “updates” folder.
    This applies to legacy devices. The firmware update for your 7612 is in the 'updates' folder.


    Quote Originally Posted by aktroller View Post
    I’m getting the impression that files are supposed to be extracted from the executable which is probably way beyond my skill set.
    You can extract those files from the executable using a regular WinRAR, but this will be the same.


    Before starting the downgrade, make sure that there is no GarminDevice.xml in the Garmin directory of your Update SD Card. Starting with the unit powered off, insert the Card. Press and hold the power button ...

  4. #53
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    I've followed your instructions to the letter, but the present software refuses to give up the ghost . Is it possible that when running the executable that it's checking my computer for Garmin information? I do have Homeport and Mapsource installed. Has anyone been able to rollback a 7600 series? I'll try making a new SD installation card from a computer with zero Garmin data. I appreciate your not giving up on this problem!
    [Only registered and activated users can see links. ]

  5. #54
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    Tried this morning with a SD card created on a computer with no Garmin info. Same result - no joy.

  6. #55
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    Quote Originally Posted by aktroller View Post
    Tried this morning with a SD card created on a computer with no Garmin info. Same result - no joy.
    What about Slot 2 during this procedure?

    Note:
    • Insert your Update SD Card into Slot 1 of the switched off device
    • Remove any SD Card inserted in Slot 2 (if present)

  7. #56
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    Slot 2 has been empty in all previous attempts. Tried this morning using slot 2 with slot 1 empty. In spite of various combinations of holding the power button and pushing on the screen, the results were the same - no change.

  8. #57
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    Download version 9.2 again (even try to find a maybe find a different source) and see if it is the same size as the one you used to unpack it to the SD. You may have a bad v9.2

    I downloaded it from the source in this thread and it is 1,514,310 KB.
    Last edited by Simplicity; 29th May 2018 at 01:16 AM.

  9. #58
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    Downloaded it again. All the same size. Has anyone been successful with a 7400 - 7600 series?

  10. #59
    Navigation software expert Garmin Maps expiration Date
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    Quote Originally Posted by aktroller View Post
    Downloaded it again. All the same size.
    Is your Update SD Card formatted in FAT32?

  11. #60
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    Yes it's FAT32. It tries to install like a normal upgrade. The only thing that show on the screen is "Transferring to Recovery Region" and then "Recovery Loader Ready". After a brief time, the screen switches to the normal upgrade screen as seen above. No changes are made to the machine.

 

 
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