Just updated my Phantom 2 to 2.0. No issues what so ever during the installation. Once all the updating was finished, I power cycled the Phantom 2 and proceeded to calibrate the sticks and X1 for the gimbal. After that, I performed an Advanced Calibration, changed some of the flight limits to 100 Ft. for both altitude and radius. Took her outside, calibrate the compass and took her up in the air. EXTREMELY stable for me and I have 15-20 mph winds blowing around me! Setting the limits was fun. Took her straight up and she just stopped, I guess at 100ft and hovered. Kinda cool. I reset the Phantom 2 back to its normal limits once I was finished though. Honestly, no problems upgrading. Took me about 15-20 minutes to do all the above. Your mileage may vary, but for me, it worked out perfectly.