Thread: Running programs from SD on nuvi

I'll buy today a big SD card to check everything inside, i tryed yesterday a copydir,0:/.System/POI,1:/.System/POI and got me a huge quantity of files, copying only system got me lot of "not enough space" in a 2GB SD
Another question, in top of the log it gives me the DeciveID, is any way to trick mapsource in using that id to create maps, cause USB is not available for me. It only charges battery while connected

There's no POI subfolder contained in .System folder. It's a root folder, just like .System is. I'm not sure what would have been copied with the command you wrote (copydir,0:/.System/POI,1:/.System/POI) but likely it'd ignore the POI following .System in the first part of the command and try to copy the entire onboard contents to the target path you specified with misnamed or nonsense folders and with random files scattered all over within the subfolder "POI" of the newly created ".System" in the card's root.

The correct command to copy only the POI folder contents should be this:
copydir,0:/POI/,1:/Backup
Although you can name that target folder on the card anything you like, e.g. "POI", "POI_Copies" or "GPI_Files" or even just write "copydir,0:/POI/,1:/" and then a copy of onboard POI folder's file content will appear in the root of the card.

You can make a fake device by using a suitably sized USB stick or media card formatted in FAT32. Make a root folder named Garmin on it. Place into that folder the GarminDevice.xml file from the device. MapSource should recognize it as the device itself and transfer data to it as if it's the actual device. NOTE: Avoid using MS to create NT/NTU .img files or you'll quite likely get navigation errors and random re-booting or freezing of the device. Use only MapInstall for that purpose. MS is old and unsupported and deals with PC Data using an outdated algorithm that cannot properly process a lot of modern .gmap data into .img files. It's quite safe to use MS to transfer other data however.

Originally Posted by motoltd

Thanks, i was experimenting, now i dont get the freezes on long routes, the basemap was the same as gmapsupp and had a lot of details i dont need.

I don't quite follow what you mean by "the basemap was the same as gmapsupp". Do you mean the primary detail map (gmapprom.img) in the device was the same as the secondary map (gmapsupp.img) in the microSD card? The basemap is named gmapbmap.img and contained in .System with the detail map/s. It is essential for proper device function, particularly when the screen is zoomed out and scrolled.

But i found a new problem, the folder POI, i can copydir,0:/POI/,1:/POI/
the problem is that i get error trying to delete files there, ex: del,0:/POI/poi.gpi
i even tryed to copy a speedcam.gpi into that folder and also got error.

To check your result, i created a empty file "poi.gpi" in a nuvi 40's POI folder and ran that command. The file was successfully deleted as expected. Did it actually show an error in the file "update.log" like this?:
Parsing "del,0:/POI/poi.gpi"
Error
Or was there no new entry at all in the log file? If no entry, did you remove the file "last_id.bin" before the next attempt? It's created on each attempt, whether successful or not, and if it's left in the 1350 folder then any update.txt command is ignored on subsequent attempts.

is there a way to remove an entire folder?
edit:
There's something extrange, the copydir,0:/,1:/Backup/ gives me error, and is not copying the folder MAP and POI, i could delete the gmap file in MAP that was the one conflicting but cant delete anything from POI, and there seems to be lot of files, that makes the navigation a constant alarm, i only wanted speedcams and speedlimits.
At least now the GPS works but have to disable the custom Pois

I tried the copydir,0:/ command in a nuvi 40 (same hwid 1350 as US/EU nuvi 50) and it worked with all folders and files properly copied in the card's Backup folder. This is the log file entry:

Code:

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I don't know why you are getting error messages in your update.log file if that's indeed what you mean.

My reply said it needed for moderator...
Anyway i got a workaround, changed the name of my poi to match the same installed, lay it in sd root, and when insert the device asked to copy to internal, said yes and overwrited the poi with all those speedbumpers alerts.
I also copyed the XML to the SD and express recognized it as a 52LM and downloaded the updated 49 states, and copyed it to .system using the update.txt
So now i think i have it all updated and working, will check if i can get the favourites from my dad's device and will be ready.

Originally Posted by motoltd

..............
Also that, full backup also gives me error, and no MAP or POI folder is copyed, but copydir,0:/MAP/,1:/POI/ and copydir:0:/POI/,1:/POI/ got those dumped.

You can also get a copy of all files and folders by using "rrgn,48,1:/48.bin". It will take sometime to complete because it will dump the entire space of the region including available space (i.e. even if you only have ~300 MiB used but the available space is 1.76 GiB, the resultant BIN file will be 1.76 GiB) therefore the copying time is the same as if the entire available space of region 48 is populated so keep it on an independent charge source (not connected to PC).

The BIN file can be opened with PowerISO or similar program to copy what you need from it, or 7-Zip will extract it correctly too.

i wont mess anymore as GPS is now working fine,
Just a question, if i dump region 48
I extract what i need from the bin, but is there a way to modify files inside and reflash it to the device? i think is xrgn command but changing things in the bin, can corrupt it and brick the device?