Question about Garmin Nuvi 660 GPS Receiver

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I bought a used 660 on ebay, it seems to have some propriotory splash page and on display page there is no option to change splashpage. how do i get it back? also on whereto page there is no go home icon, how do i get that back? thanks

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  • dolphan199 Mar 17, 2011

    well it is a DTAG unit


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At the menu, press the wrench (settings), then the display icon. On the display menu, select "splashscreen" and you'll be able to change the boot-up screen if there are other images on the unit. You can add your own images by uploading them to the unit via a USB cable connected between the GPS and Nuvi.

You have to set a location as the HOME destination first. If you already entered your home address, press "WHERE TO", then "FAVORITES" and click on your home address. Select EDIT and you should see a prompt to set the address as your home address.

- Jim

Posted on Mar 17, 2011

Testimonial: "as i said in the problem...there IS NO icon on the display page for splashpage,by the way I already have a 660 in my truck, I got this one for the wif"

  • 11 more comments 
  • dolphan199 Mar 17, 2011

    any other suggestions? i'll try the home thing when i get home

    SHARCNET-USA Mar 17, 2011

    It is very possible that it has a unique firmware. If you look on the back of the unit, look at the serial tag under the flip up antenna. A stock unit will say 660NA. If it's a custom unit, it will say something else, like 660 DTAG, which stands for "Thrifty Dollar Automotive Group". These were units used in rental cars. This may explain why you don't have a HOME selection because rental cars, etc. don't have a home location. The problem is when you try to upgrade the firmware, WebUpdater will see that is unique and only allow you to upgrade to a newer unique firmware. What you would need to do is put the unit in pre-boot mode and force it to take a standard 660 firmware.

    - Jim

    SHARCNET-USA Mar 17, 2011

    To force the unit to take the standard firmware, you need a program called "UPDATER.EXE" and the .RGN file for a standard 660 unit. When you flash that file into the Nuvi, it will overwrite the unique firmware making it a stock unit and you will then have the standard icons back.

  • dolphan199 Mar 17, 2011

    is there some file or something i could copy from my good one and replace on the "other" one?

    SHARCNET-USA Mar 17, 2011

    The firmware is not located on the unit's user accessible drive. The firmware is loaded (flashed) into internal memory. There is a file however called GUPDATE.GCD, located on the user accessible drive, which can be copied over from one unit to another that can be used to update another 660. This is a file that is created when you use Web Updater. If you have that file on another unit, you can try copying it and pasting it into the other unit in the Garmin directory and then reboot the unit. Make sure you have a good charged battery or immediately plug the unit into a power source after you have SAFELY REMOVED the unit from Windows and pulled out the data cable. If the power dies during the update, you will get a Missing Software Error. This works great between standard 660's. Whether it will work between a stock 660 and a unique one, I'm not sure as I have never tried it. I do believe though the differences you are seeing is that the unit is flashed with a custom unique firmware that adds certain features and is missing other standard ones.

  • dolphan199 Mar 17, 2011

    cool, I did notice that file on my good one, i'll try it when I get home, by the way just how long would this reboot necessary battery life?

  • dolphan199 Mar 17, 2011

    also, it seems like it was from a trucking company

    SHARCNET-USA Mar 17, 2011

    The flash will take about 1-2 minutes. You will see "LOADER" appear on the screen, then "SOFTWARE LOADING" and then the unit will reboot. Again, that is when you are doing this between two stock 660's.

  • dolphan199 Mar 17, 2011

    so...if my other one does say something other than 660na, i should NOT try this?

  • dolphan199 Mar 17, 2011

    so a hard reset probably won't do much good?

    SHARCNET-USA Mar 17, 2011

    If the firmware version on your unit matches the firmware version of the GUPDATE.GCD file, it will not reflash. The current versions of the firmware is contained in a list file called GarminDevice.xml. The firmware version of the GUPDATE.GCD file is compared against what is listed in the GarminDevice.xml file. If the GUPDATE.GCD file is newer, the flash will proceed. If they are the same value, it won't. If the file is older that whats listed in the file, you will be given a prompt asking you if you want to install an older version.

  • dolphan199 Mar 17, 2011

    it is a DTAG unit and tried reflash, loaded but no change.....what now? lol

  • honster Jun 20, 2011

    Did this method work for you? I have given it a try with no luck


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