I recently purchased a spark and have flown it twice without guards. All seemed great. I decided to do a IMU Calibration. Will the next day I went out and decided to try out the safety guards as I was in a area that had trees near me "safety first." In the process of doing so I forgot to do a compass Calibration. I no more then left about 4 ft off the ground and the spark did a front noise flip like and landed on its back. Now, when i power the spark on all I get is a beep (during each beep you can see the blades twitch) and no lights. Neither controller of tablet reconizes the spark. I have tried the wifi reset on the spark and still all it does is beep. Anyone have any thoughts before i have to send it of to DJI?