After updating my typhoon H firmware I took it to an open field to test the update everything seemed fine until I tried to land, the typhoon jerked violently and flew off.. I eventually caught it mid air and cut the power. I done a full calibration and drone seemed to fly fine. The next time it was out, the same thing happened but this time it went straight into a tree before falling to the ground. I've contacted yuneec uk who have asked for the telemetry file for the two flights, does anyone understand the info to say if it suggests a problem?