Garmin Drivesmart 76 cannot find detailed maps after software and map upgrade

Using Garmin Express, I ran the following update:
City Navigator Europe NTU; version 2026.10 and restarted the 76.
After the update a message stated that " no detailed files were found "
I opened a new route and was shown a route with pencil-thin roads and a route in a highlight colour.
Route directions were spoken and the route was just about usable. But at night the route was almost lost in the dark background.
I was advised to re-install the update.
When I went to re-install, I found that a) the update appeared successful, and 7 maps (version 2026.10) were installed. b) Garmin express stated that the same update was still available.
I did install the update again with the same result.
I now have an unsafe installation without the maps that the Garmin 76 shows as loaded.
I have since re-installed another time with the same result.
I would welcome guidance as the 76 is basically unusable as it is.
Thanks
Andy

 

Thanks Nuvi-Nebie. I have upgraded the maps yet again and this time I had a clear message that maps are up-to-date.
However the detail is basic with no buildings and terrain despite being selected. Safe to use in daylight but unreadable with the dark screen.

Regarding Bascamp and maps to computer; I have seen this solution offered on the forum, I have ample computer space to do this but: is this a one-time fix or will I have to do it every time an upgrade is available?

I have also seen options to delete maps and re-install but I have not found the safe way to do this.

Finally re option to reset; how much goes back to default? Maps? OS? Route data etc? Will the 76 still be viable to re-install all the latest updates?

For the record the 76 capacities are below
capacity 27.8GB
Free space 12.5 GB
I also have a 126GB microSD in the slot but haven't activated it as space seems ok on internal drive.

Regards
Andy

 

Thanks Nuvi-Nebie

I have kept Basecamp to computer as a fall-back if all other options fail to resolve the
problem. I only plan to do it if I need to. As Basecamp to computer is (among other things) a
work-around for space constraints I don’t see it as a solution to the problem I have at the
moment.

I do not have space problems on my 76. Capacity is 27.8GB and I have 12.5GB left. In
addition I have put a 128GB micro SD in the slot but have not needed to activate it.
The problem seems to suggest a glitch brought about by the latest map update. I always
update with Garmin Express and this is the first time that it has failed to download viable
maps.

Earlier today I ran the update for the 5th
time and was advised that the update had been
successful.

I opened the maps and found that I had a basic map without the detailed map overlay. It is
operating well but lacking the detailed maps. I seem to be getting improvement with
repeated installations but have no wish to keep on re installing.
Is there a way to check the maps to ensure they are complete?

Thanks again for your time and assistance.

Regards, Andy

 

Thanks again.
I will go away and try basecamp.
Hope your broadband is back up to speed

 

Thanks Nuvi-Nebie for your help.
Basecamp is installed and I have successfully installed 2026.10. Surprised that it used an extra 6GB on my 76.
I assume that the latest installation by Basecamp has added new files rather than overwriting the old installation.
Anyway, I'm happy to close this thread.