FTT,
No it didn't take anytime at all.
I used the vwdiscoverycare program. I inserted my original nav sd card into my pc, opened the vwdiscoverycare program. The program checked for updates and said there were new maps. It then downloaded them and saved them to original VW sd card. That took 4 hours on a good internet connection. Then the program stated that the new maps had been installed:
I then took the sd card to the car, inserted it into the glovebox unit in slot 1, turned on the media unit and opened the nav. Then after 20 seconds the nav was fully ready. I checked the software version, which showed the update and also I could see a newly opened road which wasn't there in my 2026/17 version.
The thing to be sure of is that you have to let the discoverycare program load the whole map set, either region 1 or 2. Uk is region 1, i.e. All of Western Europe. If you try to just load uk i don't think it works as the data is handled as a protected block, by the region.
Axel