I had an independant do a Transmission software update at the same time they did a transmission fluid and filter replacement, diff fluid and transfer case fluid replacement.

The software update was $90 and all the adaptables were reset as well. After this service and software update, it felt to me like going into a shift was the same but coming out of the shift felt much smoother and quicker. In my case I'm just happy knowing I have the latest and greatest technology applied. I also have a great deal of trust in the independant mechanic who is a well known BMW enthusiast as well.