Thread: Multiple maps on SD Card

Originally Posted by rodrigos

Hi, I have a 3760 with EU map in the unit and US map on SD card (Map folder). Since the internal filesystem is becoming full, I'd like to free up space by moving EU map to SD card. For this purpose, I'd like to know whether it sufficient to move gmapprom.img and gmapprom.unl to Map folder.
Regards,
Rodrigo

For 3760 unit to unlock maps with FID>=2200 you need gma file from Garmin. Or use unlocked maps. Then gmapprom.unl and gma are not necessary.

Hi voyager, thanks for your prompt reply. .System folder contains 3 *.gma files. How can I use them to move map to SD?

Regards, Rodrigo

Originally Posted by rodrigos

Hi voyager, thanks for your prompt reply. .System folder contains 3 *.gma files. How can I use them to move map to SD?
Regards, Rodrigo

I'm not sure, but you can try to move only map and gma files leave where they are.

Originally Posted by Neil

The *.img, *.unl & *.gma files are interdependent so it's best they be in the same folder, either on the device (or a card) which the .unl & .gma were originally created for. If you move the map to an sd card to use it in a different unit, it needs to be unlocked, and that means by [Only registered and activated users can see links. ]. Otherwise you would need to repurchase the map and obtain a new .unl & .gma. You can create a new .unl file for the map using the card id with jetmouse, but it'll be useless without a new .gma of course, because the original .gma is specific for the original device/card only, so it won't work with the new .unl.


Edit: Just to be clear, the map will work in any sd inserted in the unit provided it's accompanied by it's legitimate and appropriately named .unl & .gma files. Accompanied that is, either on the sd with the map, or remaining on the unit. By legitimate, i mean those files that were created or existing when the map/unit was purchased.

@neil
i am also running out of space on the internal drive of my 3790t. just as i learned that i can move my factory mapset files from the internal to the sd card which includes, img, unl, gma files. my question is how is it when i have to update it thru the garmin express updater, will it still be ok? will the updater find its way to the original factory mapset being in the sd card. thanks and have a nice day.