I managed to install NDS MOD on clean device. With two important conditions:
- first - on an older Android system and a device with an mSD card. During installation, NDS places the files there by default (also GO edition, btw).
- second - you must have a proper valid backup of the 'map' and 'lang' folders.
Or, what I also tested, a fresh content from the GO software, because the data and their format are absolutely identical

This likely means it can also be installed on some modern devices running a newer version of Android, provided you have full access to the `android\data` folder.

I ran the installation with the GPS receiver turned on until it got to the step where it couldn't connect to the server to download the maps. Then I killed the app, not just exited it.
Then I placed the content (the map data of the country of current location is mandatory, it is possible to insert more countries) into the appropriate folder.
Androdi\Data\
com.tomtom.gplay.navapp.nds\
files\NdsMaps\ whole WORLD folder

I restarted the app from the created shortcut, reached the step where app was interrupted and it recognized the content, and then tried to download the voices which I chose
I repeated the process with killing the app and inserting the voice folders
...\files\ContentKitData\voices
and inserted the saved 50 and 110 folders related to the voices of my language
Edit:
Actually these steps were unnecessary
Downloading any voices works the most normally

Restarted the app again, and that was it. I have completed the rest of the settings
Then I shut down the app, deleted the WORLD folder and inserted the same one from the GO application, with the downloaded maps of several countries.
After the next launch, the app recognized the complete content.

The only thing GO offers more is an online price overview at gas stations (and truck support, but for now it is not possible without a subscription)

Yes, I intentionally duplicated the post in two threads, because the process is most likely applicable to the standard edition as well