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There could be two MapSource versions:
1. original MapSource (complete and nothing is lost) and
2. generated with Gmaptool program from gmapsupp.img (or gmapprom.img) which is not good for transfering again to device because some search functions are lost, mostly this versions are installed by copying files to some folder and running "install.bat"
You should move JCV and 3D files manually
On your device maps should be only in hidden system folder on device) and in map folder (on device and on SD card)
It is better that you don't use MapSource program for transferring directly to device, because it could overwrite your existing map.
Use patched version of MapSource to transfer to your HDD, rename file, and than copy to device
In system folder you should have gmapprom.img and/or gmapoem.img (could not be unselected) and in map folder gmapsupp.img or any other name (xxxxx.img)
As I can see from your post, you are using Windows Explorer (I hate this program), and option "Hide known file extensions" activated, so you COULD NOT see actual file extensions
TURN THIS option OFF
Do not touch those *.sum and other files, and backup your device to PC before doing anything (copy all content to some folder)
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12th July 2010, 03:21 PM #1Global Moderator
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12th July 2010, 03:25 PM #2VIP Master
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I have been told that those "sum" files are merely checksum files and can be deleted without any ill effects.
Originally Posted by Midnight Blues
If not, what do they do ?Last edited by timp4411; 12th July 2010 at 03:29 PM.
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12th July 2010, 06:42 PM #3ali87saGuest
Dear Midnight Blues,
Thank you for your valuable help, a couple of questions on the following
What is the purpose behind the first step here? Am I pulling the maps that are built into my device using MapSource? Why do I rename then copy again to the device? Originally Posted by Midnight Blues
From the second step, am I understanding correctly that I should only add gmapsupp.img files to a map folder? Where do I create this map folder exactly? In the hidden System folder or Device root or a Garmin folder? Will the device recognize additional gmapsup2.img maps if I put them along in the map folder?
One last question on the JCV and 3D files, within the hidden System folder, I can a see gmap3d.img file and a JCV folder that has a D2339010A.JCV file in it, now that I have new JCV and gmap3d.img files for the 2011 Europe map, should I be putting the Europe JCV file in the same JCV folder along with the North America JCV file? Or do I need to create a new JCV folder in the map folder where the gmapsupp.img is going to be? Same question for the gmap3d.img, does it go in the System folder or the new map folder?
Sorry for taking so much of your time, I really appreciate your help.
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