Originally Posted by KiwiJochen

Aargh - I just checked.

Standard BMW mk3 OS has de, es, it, fr, gb, usa

NL is added for Mk4 OS

So for Mk3 you have to use the copy-and-rename method.

eg: if you want English text + Dutch instructions:

Copy the dutch voice language and rename it to the english voice file

Reload English to the nav.

NavCoder is useful because you can tell it to force-load a new OS.