Hi Neil, I have done the software updates. I haven't had time to update the map yet, I need two free hours.
After performing the updates, the voice command application worked. The system's voice commands all work correctly.

Spoiler: [url=https://postimages.org/
Screenshot 20240427 161659 Gallery[/url]]


It is evident that the first time I converted the nüvi to 34xx and connected it to Garmin Express, the updates it offered were not correct, which is why the voice command application did not work. I think it is possible that Garmin Express retained data from the nüvi 37xx and that is why it did not offer me the necessary updates for the voice command application to work.
After uninstalling Garmin Express, deleting all system folders and deleting any Garmin data in Windows REGEDIT, Garmin Express detects the nüvi as 34xx and offers the necessary updates.

After the update, I compared the folders before and after the update and the image clearly shows the change. After the update, new language files have been added other than those that already existed.

Spoiler: [url=https://postimg.cc/1gHtff3S
Carpeta ASR 34xx VS ASR 37xx 3790[/url]

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When I try to search for a city, address, place..... the voice commands do not work, the message in the image appears: This function is not available for Spain in Spanish.

Spoiler: [url=https://postimages.org/
Screenshot 20240427 161638 Gallery[/url]]


I imagine that until I install the map update and the ASR files for the map 34xx are installed, voice commands won't work.

Let's see if I have time this week and can update the map and I'll tell you things.

A hug,