I've had a play today and got the cornering fogs working. I nearly selected the wrong option, they are very similar. Shame the car doesn't speak English!!
Sixysix - I've enabled the chirp and it's quite understated.. It's not too much like an old 90's alarm.
Also got the reverse mirror tilt working, returns to it's proper place each time I've tested it, just a shame it doesn't go lower!! I've also enabled auto rain closing windows, auto fold mirrors without having to do the long press, increased indicator flashes to 5, and a few other bits from the German forum.
The only other thing I wanted to do but couldn't get to work was changing the sensitivity of the auto high beam, it kept erroring. :-/
Over all, for £12 I'm happy. My main changes that were essential were the mirror fold without having to long hold the remote and the auto mirror dip.