WARNING..Frsky and new Brain update causes crash on F BUS versions 3.4.084 and 3.4.086
X20S HD Ethos 1.3.0 f bus TD MX 1.0.8 RF 2.2.2.
I Updated the brain and set up last friday, 18/12/22
receiver entered failsafe in flight at less than 100metres. Heli flew for a good 30 seconds enough time for it to do a big loop, but control never came back, recovery was held in during that 30 seconds!! failsafe was set to 'no pulses' on throttle and hold everything else, in hindsight this should off been set to recovery. I was unaware that F_BUS had problems with the brain and its cost me severely. (I too have used F port without issues.)
reverting to version 3.4.059 is a fix for now, Hopefully MSH will sort this quickly for those that have a machine to fly.
So i hope this saves someone else some heartache.