Hi all, 3 days ago I've lost my drone a P3 ADV and really don't know what happened. I was flying from a boat on a lake, the sky was completely clear and I was in direct LOS with no obstacles at all, 70 meters high and 1.7 km away (some of the previous flights had been 2 to 3 times further on the sea). I was about to get it back when I got the Signal Lost message from Litchi. I was using Litchi 3.6.8. The RTH function kicked in automatically, but my drone didn't came back. I was at 76% battery 4' and 27" after take off and I had the dynamic home point feature active, even if the boat was not moving from the Take Off point. After a couple of minutes with no signal we went with the boat directly to the last position we had on the map, but we couldn't see the drone in the air, nor in the water. On the tablet I had no warnings of any problem, simply the last frame freezed and the signal lost message. The image didn't show any fall and the flight was going well till that moment. It seemed a complete electric/electronic failure from the battery or from the core of the drone. Can anyone help me to understand ? I've done more than 500 flights with this and another P3 STD drone for more than 60 hours in flight and more than 1000 km of total distance in about 9 months, and I had no issues like this.My P3 ADV was around 700 km of total flights. Everytime I happened to loose signal the RTH function bringed my drones back, but not this time The only two differences were the dynamic home point feature that was active even if we where not moving, and the Take Off from the boat. I remained about 30 second up in the air over the boat before flying away to ensure there were no issues with props or compass and everything was fine. Here is the link of the flight and the status of my drone from healty drones: HealthyDrones.com - Innovative flight data analysis that matters I will really appreciate if anyone can help me to understand. Please help me. I've posted this message also on the litchi group on Google.