I managed to get all the latest files from Garmin again, by editing the original Device.xml
So acquired all the srd files, incl. German, Italian, and so on
Also all Keyboard and text files.
However, ASR button stays useless when I switch to an European Language, except British.
I will talk with Garmin next week, however I expect the same feedback: "We talked with our engineers, that was never possible" (same I got when I asked a similar issue with the 765).
Currently very reluctant to flash to an European model.
Thanks for all your contribution, help and ideas