I had problems with the last update and had to return my ST16S to Yuneec UK. The firmware did not seem to install correctly and I deleted and re-installed Update Pilot to get the updates to proceed. However, the firmware seems to have been corrupted, as when trying to take off using the red button, the Emergency Motor Shutdown notice appeared on the screen. I could not overcome the problem and nor could Yuneec UK even after a tablet re-set. I am pleased to say Yuneec UK were most helpful and very kindly sent me a new ST16S. After a couple of flights the only issue seems to be that, as others have found, the Hi speed/Low speed switch has no effect. I did not notice any jitters in the video and the issue with having to repeatedly input the camera password seems to have been fixed. Thank you, Yuneec UK!