I have my F3FC running – no motors on it yet – trying to attach a Spektrum SPM4650 – But I cant get to first base. I’m using Betaflight 10.7 and I found triflight .7 I got it flashed and when I connect to the board I can see the gyros working. So I go to the ports tab and turn on UART1 and set to serial. Save and reboot, go back to ports and UART1 is off. I also tried, under Config, to set the receiver to Spektrum, 2048 or 1024 and SXRL – save and reboot go back and it’s not set.