Hi, this is my first post, unfortunately following depressing circumstances. I've had my Vision 2 plus quite a few weeks now and every weekend, apart from the one just gone when I had a sickness bug, I have had lots of successful, careful flights. Today, I updated the camera firmware to v1.3.0 and probably feeling a bit overconfident following so many successful flights, I launched by phantom in a smaller clearing than normal following calibration. As soon as it was in the air I realised that it was not stabilising in one spot - I manually tried to keep it steady, preparing to land, but it shot sideways and into a tree about 15 metres away. I'm still wearing the prop guards - the one that impacted the tree completely shattered and it fell down to the ground side on - luckily this saved the camera. Another prop guard split, and the battery had been ejected!! :shock: I tried a couple of small test flights after the accident, very low, and again it was not stabilised and I had a couple of minor downs onto soft ground before I gave up. One thing I was thinking was that I carried the Phantom in the boot of my car for the first time, rather than my wife's car, and I have a large subwoofer in the boot - could this have affected anything - as I said I did calibrate before taking off as I usually do! After the accident the Vision app was warning that Transmitted Calibration was required. I will run through the routines. Is there any way to try and diagnose what could be the issue before I attempt another flight tomorrow? Also, what checks should I go through on the phantom tonight to check nothing is damaged - the rotors were on very tight when I removed them? I plan to fly in a large open playing field tomorrow. Cheers.