I have a european unit . My voice is the flemish male (not tts).
I found a flemish female voice and tried to install it to no avail .
I copied the file but it does not show up in the list . Then I tried to delete the german voice and rename the female flemish to the original german name .
The result : when I pick German , the instructions are in ... german (?!)
The unit apparantly caches the voice files someplace else ... anyone know where ?