So far I’ve been unable to arm using the transmitter. The Quad boots up, finishes all pre-arm just fine, but holding throttle to bottom right doesn’t arm. I CAN arm it using Mission Planner. It also disarms just fine using the transmitter to bottom left. I just can’t get it to arm. I’ve tried reinstalling firmware and software, going through configuration repeatedly, and manually tweaking maximums. Nothing has worked for me so far.
I had this exact same problem, luckily I think I have your solution.
You need to (re)calibrate your ESCs, manually.
Plug each into receiver in port 3 one at a time with everything on and the receiver’s throttle at max. (remove the blades) Your ESC should beep a little song, then move the throttle to the bottom, you will hear a confirmation tone. Do this to all your ESCs.
Hope this works. Sounds just like my issue.
~Also, reverse the throttle on the receiver if you haven’t yet.