Hi all not had the greatest time with the drone today, I updated the drone the other day and thought I'd take the drone out for some test flights. Had been working just fine and had just landed the drone for the 3rd time to change batteries and after take off I started pushing forward then suddenly it speeded up and become unresponsive and went on a journey, first thing I done was to put it in home mode but still nothing. It then changed direction and it looked like it was coming back, I noticed on the screen it was telling me something about the compass and to land straight away. It flew past me and headed over a private lake then I lost signal. Took me a while to get access from the owner to the private lake, He was really helpful and assisted trying to find the drone. The night was approaching and I had to give up. I've checked the GPS details and re-looked at the footage but it had froze while above the lake, it might had even dropped in? I'm gutted as the whole reason I purchased this was for my wedding which I'm going abroad in two weeks for. I'll contact Yuneec in the morning and hope they can help?