What I read on the net is that these .dat files are encrypted and the other .txt files are the best to use. I have contacted DJI support as well. Now they asked the serial number of the DJI FPV .. again I have to wait until the evening because it is not at the offfice : )
Let me add another detail of this incident. : When the drone started moving back I tried to ascend the drone. So the drone moved back when it saw the river at about 1,2 meters height from the water. In order to avoid from crashing the trees I moved it up. I tried the same thing there twice. In...
Here is the .dat file : ( this includes 3 or 4 flights one after another. The drone does the same effect right at tha location and height. Until that point or anywhere out of that poin it flew very good.
https://drive.google.com/drive/folders/10SiqOaTCFOtJneG8x1tndGR4Y7jP5Wmk?usp=sharing