I upgraded mine to 3.0. Thought everything was working fine but now I'm not so convinced.
My GX-50 GPS was feeding data to it fine. Now with the upgrade I'm not getting the stream any more. Not sure if there is some setting or something that needs to be changed, but having the fuel economy and wind vector stuff is pretty important to me in terms of efficient flying.
Also, I have a whopping 5 hours on my plane right now, but my Dynon is indicating about a 10 degree left bank in level cruise. Not sure why 'cause it indicates level on the ground. Hmm...
Of course, I have ONLY flown with the 3.0 firmware so not sure if the lean would have happened with the old firmware as well.