ALWAYS go through the DIR setup when you upgrade the firmware. You just never know.
They came out with this so fast because of all of the crap the 3.0 caused. Just look at the RCH 600... First takeoff, or what would have been a takeoff, the swash was correcting crap that was not even happening. Second one that was not on video it was doing even worse! Almost tapped the blades on the grass which would have been catastrophic at the rpm I was running.
I may upgrade the 600N to see if this will fix the issues. I will know on spoolup if it's better or not. If I see that swash twitch even once, I'm shutting it down and pulling out my 30lb sledge hammer and putting the 3GX where it belongs, into a million pieces and then in the burn pile to go away for ever so no one else can crash with it!