Thread: nuvi 3790T keeps rebooting during navigation

Yes I've done a hard reset recently which deleted my past dialed addresses etc, as thought it may of been filling up the internal memory but that did not solve the problem...
I'm on latest FW build from Garmin & I'm still getting the same issue as before.

Had the same issue on my 3790 when i installed City Navigator Europe NTU 2013.30, but problem was only present when using portrait mode.
Screen would go black for a couple of seconds when the map was refreshing, Very occasionally, it would crash out completely, but never when i had the 3790 in landscape mode.

Haven't had an issue since i installed City Navigator Europe NTU 2013.40

Originally Posted by dasilvarsa

Try to remove all GPI Files,
Sometimes bad GPI file can cause reboots. Bad Voices specially those like Arnold Shwarzneiger etc etc can also cause problems.
Does it happen when simulating ?
When did it start.?

Thanks! I have no custom voices but thinking about it I did have some 3rd party points of interest, Ile remove all GPI files & see what happens on a trip out.

Got the CN Europe NTU 2013.40.gmapprom image, locked version downloaded with Jdownloader

Here's the latest system info:
Model: nuvi 3790
Software Version: 5.00
Audio Version: 2.40(British English-Emily)
Text Version: 2.90(British English)
GPS Firmware: 2.60
Bluetooth Firmware: 3.0.35 P55
PMIC Version: 824
TSC Version: 1.16

Cleared Nonvol using following method rather than pulling battery...
1. Viewing map Press Speed dial
2. Instuments view -> Long Press on Speedo dial
3. Navigate to -> Developer Info -> Nonvol Statistics -> Press top left icon (Clear Nonvol)
Note* After every firmware update it is always better to reset nuvi!

Also took dasilvarsa's advice & deleted all GPI files from the POI folder

Here's what's on the 16GB SDHC card!

CN Aus-NZ NT 2012.20 - 3D Buildings
CN Aus-NZ NT 2012.20
Europe Recreational v3
Great Britain Discoverer
Thailand Street Map 11
Thailand Street Map v11 NT 3D Buildings
Thailand StreetMap v11 NT DEM
Topo Australia & New Zealand v3

Looking round the forums I see there's allot of change & I'm thinking It's time for this old unit to get a re-vamp maybe 34xx firmware etc.

Has anyone produced an up to date file/folder description list?
I have this one but needs updating.....

�Diag folder - used by Garmin, it stores debug infos
�ExtData folder - ExtData folder - stores 006-D0952-01.bin, 006-D0952-02.bin, 006-D0952-03.bin, 006-D0952-04.bin, 006-D0952-05.bin, 006-D0952-06.bin, 006-D0952-07.bin, 006-D0952-08.bin files which contains special font for not alphabet languages likes Herbew, Thai, Arabic.
ExtData folder - also stores for some device with MTK chipset files ARC.BIN, BEE.BIN, 006-D1221-00.bin. 006-D1221-00.bin - GPS Chipset Type M HotFix Data software which updates by webupdater and ARC.BIN & BEE.BIN are files what stores current info for GPS software metioned above.
�GPX folder - stores your trip log. You can open the GPX files within this folder with Mapsource ( see post n 5 for more infos)
�BTM folder - stores infos about your phonebook and a .wav file your unit run when a call is coming in your phone.
�EULA folder - stores infos about licences (traffic,Navteq,nuRoute)
�Help folder - stores help files in different languages
�Keyboards folder - contains Keyboard languages files ( .kbd files)
�Reports folder - contains the mileage.csv , a file that will give you a summary of all of your trips, cost, etc. as part of the ecoRoute feature: it contains the following fields, Date (MM-DD-YYYY),Start Time,Origin Longitude,Origin Latitude,Destination Longitude,Destination Latitude,Origin,Destination,Distance (km), Time (min), Fuel Economy (l/100km), Fuel Cost (EUR), Carbon Footprint (kg).
Scores.bin is related to Overall : a combination of the speed acceleration and braking score and to Speed : gain points for driving at your vehicle's optimal speed for conserving fuel.
�RoadSideAssist folder - stores infos about RoadSideAssist services (AA) and images for 'Where Am I' function
�JCV folder - stores Junction View files on models which support such a feature
�ASR folder - "SRX+ASR"/Voice recognition files (Automatic Speech Recognition)
�G2S folder - G2S&.db :N�Route technology&trafficTrends
�JPEG folder - stores Nuvi's default pictures and splash screens. You can add more jpg files into this folder
�POI folder - stores custom POI and travel guide files. These files are with .GPI extensions. It is ok to delete these files if you are sure you don't want them
�RemoteSW folder - Files stored in RemoteSW folder are the microcodes for appropriate chipset installed in your nuvi. Firmware upgrade checks at start if the version is to flash < version on disk - then upgrade it. It is an upgradeable code. (GCD, BIN & SUM) The first.GCD is the original firmware. The other file is the new firmware that the unit has installed-
�Scrn folder - stores your screen capture images. The files are in bitmap (BMP) format and could be opened with Windows Paint application
�Text folder - stores default and custom messages and keyboard layouts. These are text files with .GTT extensions. You can edit them with a text editor.Files with the text of the juice of additional languages.
�Vehicle folder - stores Garmin vehicle icons. Files are with .SRF extension. You can add and delete these files.
�userdata - technical archive, dont delete.
�Voice folder - stores Garmin voice guidance files. Files are with .VPM extension. You can delete unused voice files but do it with care.
�Birdseye folder - stores Garmin maps made by using BirdsEye Satellite Imagery in .jnx format
�Themes folder - stores .kmtf extension files. They are just text files, so you can create your own:you could change the color of lakes, parks, shopping centers and other polygon areas.
�SQLite folder - It stores .db files : Traffic trends, ecoRoute,myTrends and some user's strings. To read these files you can use a SQLite client .
�Logs folder - stores files concerning track logging feature.
�Demo folder - can store demo.gir file .It contains some images for the demo sequence.
�GPS folder - stores ARC.BIN , BEE.BIN etc files used by webupdater.
�Custom maps folder - stores custom maps made eg. with Google Earth in .kmz format
�Custom Symbols folder - stores waypoints symbols you can create and add in your outdoor gps
�Profiles folder - stores profiles and profiles settings in outdoor gps. You can choose different ones among automotive ,classic, marine etc each one with different settings: selected maps to be shown in choosen profile etc
�Filters folder - Geocache data
�Audible folder -audio books
�MP3 folder Mp3 audio files
�fs_image.ver -Technical file
�GarminDevice.xml - stores information about your Nuvi to facilitate transfer of data to/from your unit.
�gmapbmap.img - Garmin base map (worldwide map) cannot deselect it.
�gmapbmap.sum -check-sum file, mapupdate related, can be deleted.
�gmapoem.img -Additional map for specific branded units such as Honda and BMW,it doesn't show up in the map inventory, cannot deselect it.
�gmapprom.img - Garmin detailed map (preloaded). Back up this file before deleting or overwriting it.
�gmapprom1.img -Another Garmin pre-programmed (preloaded) map. Back up this file before deleting or overwriting it.
�gmapprom.sum -check-sum file, mapupdate related, can be deleted.
�gmapsupp.img - This is the common file name for Garmin supplementary maps.
�*.unl - Unlock code files for Garmin maps.
�gmaptz.img - Garmin time zone map.Contains Timezones of different cities/countries for selecting the right timezone by the device based on the location.
�gmaptz.sum -check-sum file, mapupdate related, can be deleted.
�gmapdem.img - Garmin DEM (digital elevation model) It displays contours on compatible devices
�gmap3d.img - Garmin 3D buildings map
�gmap3d1.img - 2nd Garmin 3D buildings map
�GUPDATE.GCD - Used for Garmin firmware update.
�Locales.xml - It stores default language, currency sign, time zone, etc settings for different countries.
�*.Gma -Garmin new protection digital certificate. Only the legitimate buyer of a Garmin map product license will receive the GMA file connected to his/her GPS unit. That's implemented for maps with mapid >= 2200.
�Garmintriangletm.ico - it's the icon will appear on myComputer when you'll attach your outdoor gps
�Nuvi_drive.ico - it's the icon will appear on myComputer when you'll attach your Nuvi USB
�Startup.txt - Edit this file to display a message while your unit is powering on.
�*.sum - files left by updater: can be deleted.
�TrafficProvider.xml - It stores infos about your traffic providers subscriptions (Nuvi 1xxx and 37xx series etc.)
�sw.unl - unlock code file for phones Garmin MobileXT application