^ We tried this software updates, and nothing, the n54 335i still bogs on high rpm fast shifts..
Maybe the 1M doesn't have this protection in ECU, because it is an M. But if you say that it bogged... Maybe you can try to fast shift 3-4 at 6500 - 6700 rpm. I am sure that it will bog again.
Let's see what others 1M owners have to say about this.