Hi all, help me before I don't take 3 advanced out of box again. Had my quad for 2 weeks now after owning 3s for 6 months. Last couple of times flying I've got the dreaded 'no signal' light up on app. Luckily I've had my son nearby as a spotter and he has been able to guide me back home. So, I get the no signal, anywhere from 40 metres away up to 600 metres away, nothing on camera view but I'm clearly still able to control it to bring it home. Updated to FW 6 just before this started happening and what I really want and think I should do is wind back on the FW? Even clearing video cache, carrying out IMU cal before flights it still does it. Tried flying in different venues but still happening. Can anyone give me some guidance on way ahead!?????