Thread: Nüvi 3790

For Voice Command to work you need to have the entirety of Garmin's EU mapping installed. Do you get any error message when you try to use it? Read this to see if helps you figure out your problem with ASR: [Only registered and activated users can see links. ]. Note that some ASR related files are map-specific (i.e. they change with each map version), There are also 2 versions of the files which are device-specific (in that they may be "ASR1" or "ASR2") and i recall, without absolute certainty, that 37xx uses ASR1 and 34xx uses ASR2 so you should check the voice command files you downloaded for 37xx can in fact be used on 34xx. You also need to have in the device's on-board memory the language-specific ASR file (*.SRD) for the language you're using for voice commands, but other voice command files may be on a media card.

JCV files are also both map version-specific and device-specific however both 37xx and 34xx use the same file-type. If you have JCV files for an earlier map version than the one loaded it won't work though.

There is a bug in GarminExpress which occasionally appears where it will offer a "one-off" map update to a device under Garmin's latest maps guarantee, even though the device may be many years old but has been recently returned to factory settings. That guarantee is really solely to ensure that devices which have been factory programmed with mapping are given the very latest mapping immediately after purchase. If you let the device as 34xx get a satellite fix that option may no longer be offered. Rather than fake it on a USB stick or media card during the update, i would now re-connect it to GE directly with a minimun size 16GB microSD in FAT32 ready to install when prompted by GE because obviously all of EU and ancillary files cannot fit on your 8GB internal memory. It's not your fault Garmin has messed up so you don't need to hide it. Any unlock and GMA files will be legitimate so don't worry.

GE is reading the device's HWID to determine the type of files to supply in the update, however it's servers have the UnitID recorded to determine it's original factory mapping entitlement (i.e. the map region or sub-region and LM if appropriate). It should supply you with all the appropriate JCV, ASR, etc., etc. files along with the one-off All of EU map update. So if the offered update is still available it should all work correctly without you having to find other files to download separately. Be sure you accept all offered updates for desired Language files and Spanish voices and any other associated files you're offered too. Then voice command should work, as will Junctionview.

Those posts in the other thread are confirming that 37xx uses ASR1 and 34xx uses ASR2 files, and that the language-specific SRD file for Spanish must be loaded for you to use Spanish for Voice Command too. As i said, GE should give you everything you need to work with the 2025.10 mapping.
PS: No need to 'code' internal links to threads/post in here, only most outside links other than download sites.

Hi Neil, I understood it perfectly. Even though I currently have a 34xx, Garmin has my entire history and even a single UnitID.
Despite the fear I have of directly updating something again, I have no other choice. I will update as you tell me and I will give you news as soon as I have it.

Thank you, thank you very much.

Edit:

Good news Neil. I have done the True Crossing View (JVC) test and this is the result of two exits on the highway:

Spoiler: [url=https://postimages.org/

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[Only registered and activated users can see links. ]]

It is proven and certified that all the tests I carried out of copying maps from different Internet websites did not work correctly or in the meantime the nüvi operating system did not work well.
Deleting all the files in the ASR, SQLITE, JVC... folders and copying the original map files has been the key.
I am happy! We already have one more step!
Thank you very much for everything you are putting up with me.

Good morning Neil, I have good news. I installed the map using a 16Gb card, just as you told me.

Originally Posted by Neil

There is a bug in GarminExpress which occasionally appears where it will offer a "one-off" map update to a device under Garmin's latest maps guarantee, even though the device may be many years old but has been recently returned to factory settings. That guarantee is really solely to ensure that devices which have been factory programmed with mapping are given the very latest mapping immediately after purchase.

The voice commands work 100%, right after installing the map, with all my anxiety to see if it worked or not, it did, IT WORKED!!! Not only did the search for places, addresses, cities, etc. work, the phone's voice commands also work.

Spoiler: [url=https://postimages.org/

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[Only registered and activated users can see links. ]]

You can clearly see in the images how the map update has created new folders, including the SID folder, and how it has changed, deleted or added new files in the ASR, SQLITE, JVC folders, among others.

Spoiler: [url=https://postimg.cc/JHbV0Pcy

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[Only registered and activated users can see links. ]

Originally Posted by Neil

If you let the device as 34xx get a satellite fix that option may no longer be offered

Neil, I have a question. The nüvi 34xx, once the system updates were installed, the map update had not yet been done, it had a satellite connection, I did the JVC tests with my original map. As I already told you, my nüvi had original maps of Europe, version 2012. If I wanted to update the maps, I had to pay €99. I found the unlocked City Naviagator 2025 online, downloaded the files, copied them to the nüvi 37xx and from then on, every time I connected to Garmin Express, Garmin recognized the lifetime update for all of Europe, including a modification update of errors Is this like that or have I been lucky?

As the illusion took hold of me, I couldn't hold back and took a trip to check that the real JVC view of the new installed map worked. IT WORKED!!!!

Spoiler: [url=https://postimages.org/

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[Only registered and activated users can see links. ]]

So: I can't say anything other than that I am very happy, it has been a lot of fun these good times that I have spent trying to recover the nüvi in ​​the best possible way, so, THANK YOU VERY MUCH FOR YOUR PATIENCE and for wanting to share with me your time. THANK YOU NEIL, THANK YOU VERY MUCH NEIL.

That's great news Choco, but a word of caution. I don't want to dampen your enthusiasm..... but because even though region 41 can't be properly cleared or erased there's always the possibility of it still being accessed by the device's firmware and if so it might read some data (from it's former 37xx 'guises' as 3790 US/EU and 3790 SG/My) that is incompatible with it as a 34xx device. It's unlikely but be aware that it might just die one day and never start again. The greater possibility is that won't happen so you should get many more years use out of it i hope.

About the map update, i've not heard of that rare GarminExpress bug offering anything other that a single "one-off" map update so if it now thinks yours, as a 34xx, has LM entitlement that's an even bigger bonus for you and you've indeed been very lucky.

I'll soon move all these posts from Firmwares section to a 'Solved' thread in Discussion section as it's turned out to have little to do with the actual firmware.

Congratulations with the help of Neil. I've been following the progress. You seem to have some strange files shown in your pictures Pro coding 070496200 for one.

[Only registered and activated users can see links. ] has been removed from updates

These file structures might help you.
[Only registered and activated users can see links. ]
[Only registered and activated users can see links. ]