Thread: Garmin City Navigator Europe NT(Unicode) 2014.40

Originally Posted by Pungente

Of course you know that very much more than me! But I'm in doubt; in that case I always reinstall the firmware, never defrag and optimize because I believed that not serve to the Garmin data format... In last case defrag and optimize? Can Giomen or someone explain it better, please!

Defragmentation and optimization is not good for often use on Flash Drive like Nuvi and other device. At most case these activities have a zero effect. But you can try its if your Nuvi drive looks like New Year confetti on the holiday table. The best way to do backup, clear memory and then put it back on Nuvi even without format. It is refresh allocation table and sometimes is more speedy than defragmentation and optimization.
In any case then the data is storage as solid piece it is very good for any system stability and data recovery. I am old school specialist and my teachers said to me if you divide data on many piece and hide it in many place nobody can easy recover it.

Apart from the detail map [obviously], you can use these files from Post #1:

3D building/landmarks map - gmap3d.img

Junction View file - High resolution split screen JCV D3048140A.JCV

G2S file - D2925140A.G2S

Your 3790 also uses ASR'1' files which are available in Post #43 or #44. This note is also in Post #1: Nuvi 23xx_37xx ASR1 files in post #43/44.

If your unit is not performing properly, update firmware if necessary and hard reset it anyway. Back up your data before resetting it.

Hello guys,

pls, what are the *.GMA files, what are installed to:
\Users\[USERNAME]\AppData\Roaming\Garmin\Maps
by MapUpdater application when updating CityNavigatorEurope?

Are they related too to map unlocking as UnlockCodes.ucx file in same directory?

I am asking because MapUpdater and Express application both failed to install CNEU2014-40 (Express succeded to install "to device" (unlocked IMG files and everything other), but failed to install "to PC" (MapSource item).

I have used archived PC-install (MSI) from here (THANKS), then I logged to my.garmin.com and got unlock code (so I have working IMG in device and working GMAP in PC MapSource), but this update didn't added that mentioned GMA file between the others:

07db3518-8870-4d67-b848-1801e494b0b8.gma
44c36aaf-71dc-4f89-adc6-7e8d4d763d07.gma
8611e7d4-2314-4713-8197-150bb8a75ba7.gma
90059c0c-8d7e-4e1f-a87f-056d20e2a0e7.gma
a6d40fed-6bfa-446d-b06f-5a9549686e4e.gma
fac28136-550d-4293-8c07-57f6c96eec4a.gma

(Each one GMA file was added after one CNEU official update by MapUpdater).

So, here I am asking for purpose of this file...

Thanks for answering the beginner question.

@ioannis0
Your question was answered by jimmy and yes, your 2455 does use *.sid files. As said, look to the unit's GarminDevice.xml found in Garmin folder. The previous map version files would be -10, -20, -30 etc depending on the version, 2014.30, 2014.20, 2014.10 etc. The next [and current] would be +10 for 2015.10 i.e. D3427120A.sid; D3176140A.sid;D3175140A.sid and D3414130A.sid. The files are maps version specific so need to be changed when you update the map.

Files are stored in .System/SID folder and are for traffic trends ,instaSearch , instaAdresses & POIs and FastRouting. More info: [Only registered and activated users can see links. ].

2015.10 was released a couple of weeks back, but we've previously neglected to close this thread. If further discussion is necessary please post in the new map thread: [Only registered and activated users can see links. ].