City Navigator Europe NT 2020.20

I tried the suggestion with Garmin express and it actually suggests NTU. I thought only the brand new navigators from 2015 and forward could read NTU files

Today I have CN Europe NT 2019.10 (all by mafozi) on my SD card in a Garmin folder and it works fine

I've tried to put several new unlocked maps in the same way (i removed the old one), but my garmin can't find any maps once it's started

I also downloaded a locked map, opened it trough mapsource and transferred it to the navigator. But again no maps after restart

So I have no idea what I'm doing wrong

I am trying to put the CN Europe NT 2020.20 on my Garmin Nuvi 250w, on SD Card (8 Gb) but the device does not see the maps. I tried several things, putting unlocked img to SD Card x:/Garmin/gmapsupp.img no luck, tried to unlock maps and put them on SD card but nothing. What am I doing wrong, any help is greatly appreciated.

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Both Path and Name are correct, the matter is elsewhere ...
My guesses are:
1 - microSD card not correclty formatted (it must be FAT32) or damaged or not recognized at all by device
2 - if you renamed Map, are you sure not to give it a double extension (ie gmapsupp.img.img)?
No others should be happened, as I could think

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When I plug the Garmin unit in the PC, it shows both internal memory and SD card, as two separate drives. I formatted the SD Card to FAT32 and checked also that the Nuvi recognizes it (holding battery icon for 8 sec to enter the test menu). I double checked, the extension is good, no double img extension. This is why i am so confused. The device has old maps (2009) on internal memory which I have not removed, could this cause the problem? Also, I don't know how to remove it from the device, being afraid I could brick it. If you have any more suggestions, I am open, but thanks anyway.

If you try to transfer maps onto your PC with Garmin Mapsource program, frst you must start your Garmin Mapsource programme directly from the root folder of mapsource program *folder containig mapsource exe file, not from the shorcut of mapsource program or from some other destination on computer or from shorcut on on your desktop.

I found the problem and it was the sd card :-( I testet the sd-card and it had bad sectors. I tried with a different sd-card and then it worked with mapsource

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The Preloaded Map (gmapprom.img) is located in \.System folder. This folder is hidden, you must enable view of Hidden and System Files in "Folder Options"
In presence of two Maps belonging to the same family (City Navigator NT) the Device loads ONLY the most recent one (higher FID)
I suggest you to check the Map with GMapTool, maybe it is corrupted

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I managed to resolve the problem. It was the SD Card, but I still do not know why, because it is working, I have formatted it in FAT32 (even did the proper format, not just quick format, and checked it for errors and it was ok), but my Nuvi 250W refused to see it (the card brand is Intenso). So, I bought a Kingston 8 GB SD Card, placed the unlocked maps on it and Nuvi recognized it immediately, so everything is working now. Anyway, thank you for taking the time to provide me with suggestions about this.