Finally got brave and did the latest firmware update (2.25) last night, as a note I hadn't done the two previous updates only the update before those two and had no problems. With this latest update (2.25) installation for the H and the ST16 went well, no hiccups, this morning took the camera/gimbal off along with the blades and proceeded outside to a wide open clearing checking for true north and proceeded with the compass calibration, no problems there, brought the H back inside setting it on a perfectly level table (used level), attached the gimbal/camera, turned on the ST16 then the H, waited for sync up then performed the accelerometer calibration, passed, then the camera calibration, passed, so far so good, fearing the worst but hoping for the best I took her outside and fired up the ST16, placed the H approx. 25' away and fired it up, waited for sync up, all's good, got camera, got sat's, got GPS, but still waited a bit longer before actual flight making sure all was still good, turned on the props and hit the up stick and ya baby we're off and running, solid as a rock, no warnings, no errors, no red flashes, no buzzing noises, continued to hover around 10-15' for another five minutes then up, up and away, went to 100' let go of the sticks and it stayed solid, no drifting. I didn't try any of the new functions or any follow/watch me stuff which I'm sure is fine, I was more concerned of stability and I had that, so happy camper here !! Only difference I noticed that it did seem to be a bit jerky when you push the sticks, had it in turtle mode, but hey, I can live with that. My regrets of buying Yuneec are very quickly starting to fade. Now I'm hoping it stays this way in the future.