I did not see the link in Steve's post so I pulled the sd card from the controller that already had the flight mode app installed, did a factory reset as Gary suggested, reinstalled the sd card, and reinstalled the flight mode app from the card. Everything started it up as it should and seemed to be working properly. I had to bind the camera and the drone to the controller and then did a software update over wifi directly to the controller as the Yuneec manual suggests . Updates were downloaded and installed. As I was just starting to calibrated the drone the landing gear suddenly went up, I looked at the controller switch and realized it was in the up position, hmmm! I finished the calibration sequence and move the landing gear switch to the down position- nothing happens. I power the drone down and back up- landing gear still up. I set the the drone on four of its motor arms in between to chair backs with the landing gear in between. I powered off the drone and controller and restarted both- landing gear is still up. I move the switch from up to down several times with no result. Anybody know how to get the landing gear down?