Just realised that this post was initially about the ground unit powering down when getting really hot.
Our issue is self re-booting (not powering down) when streaming video to an external device. This happens even at only 15 Centigrade or so ambient temperature and no sunlight. The affected unit works with no problems at 10 centigrade ambient temperature though.
Just to say that our issue is not with a very hot ground unit as others report.
It is something else causing this even at relatively low ambient temperatures. Problem disappears as soon as we are not streaming to external devices.
Just a quick update… I contacted our supplier, they contacted the factory, and we received a replacement battery. Replaced and tested today, works great.
Great news. Just cannot understand how come the factory does not officially find the cause, and the solution.
Many if not all customers may decide to go for more traditional solutions like FRSky or Futaba and Amimon, despite the higher costs.
We carry very expensive payloads, hence we cannot rely on a defective or buggy link.
For the reboot problem cause by wifi hotspot, it seems to be a software problem.
The fix is now under closed testing to make sure it won’t cause any additional issues.
Just up in the air for the third time with this new beta. Had 120 minutes flightime so far with no re-boots while streaming. Wow! Thank you @Michael_Oborne
Remaining issue is that on most occasions e.g. after battery change, video does not show up in QGC (and Solex). Only way for me is powering off the air unit and start up again. All related switches in QGC or restart/force stop of QGC do not help. Never had it with stable firmware. Would be great if you could have a look at it. If you need any further input please let me know.
Laggy Telemetry downlink has been solved and QGC Buttons working as well now.
P.S. Had 3 times QGC stopping but cannot link it to any specific action. I will keep observing this.