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  1. #1
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    Default Difference Between RGN and Copying GUPDATE.gcd Firmware Update

    I have tried both process in updating the firmware of nuvi 2595 (US).

    I found out that for RGN you need to be in pre-boot mode which quite difficult for some to do. But based on what I have read so far to be in pre-boot can be done in 2 ways:

    1. Pressing the upper Left Hand most portion of the nuvi then presss on wait till the PC recognizes the device
    or
    2. Press the battery icon for ~10 sec and a new screen with a lot of data will appear; connect usb cable and device will be recognized by the PC.

    My experience on using this process when I was trying to install PH firmware will make my 2595 go to endless loop reboot mode or Software Missing message.

    As for copying GUPDATE.gcd process (loading in SD card in GARMIN\ directory) I do not get the same state of endless reboot loop and Software Missing message. But I assume that the firmware is updated because if I use the PH firmware, the device will just prompt a message that the sofware you are loading is older version than what is installed and all data will be cleared/erased. I just click YES.

    So what is the difference?

    Honestly, I do not have the answer but the second process will remove the scare of your life that your device has been "bricked." :-)

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  3. #2
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    Some software will not load from GUPDATE.GCD but will if done via an *.rgn file with updater.exe in pre-boot mode. If you aren't sure what you are doing (especially cross-flashing or using modded fw) it is quite easy to brick your device using an inappropriate rgn.

    It seems unlikely to successfully flash to PH on your US device using GUPDATE.GCD. Probably it did not load the PH fw at all. Did you check it on the unit's inventory or in GarminDevice.xml?
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  4. #3
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    How can I check the inventory? And what will be the indication in the GarminDevice.xml that the load was successful or not?
    Last edited by odelacruz; 5th April 2013 at 06:09.

  5. #4
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    On main page [Where to?/Map], hold the top RH corner [battery symbol] for several seconds, then press 'Next' [lower RH cnr] 9 times > 'Start Test' > 'More', the 3rd entry down is System and the second set of numbers is the system sw version.'

    In GarminDevice.xml, the numbers in between <SoftwareVersion>xxx</SoftwareVersion> is the sw version.
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