FlySky (1-way) new protocol variant

That's what I think too, I see the 4 rates in your last captures, all the captures in post #1 are in 40% rate, hence I haven't noticed those bits

SeByDocKy, if you ever get your hands on one of those things:
www.banggood.com/Eachine-3D-X4-2_4G-4CH-...ED-RTF-p-969112.html
let me know which RF chip it's using (XN297 I suppose?).
I want one of those micro 3D machines

I had a -$6 BG coupon and pre-ordered it, I'm weak ...

No, I pre-ordered the Eachine 3D X4, not the v686, I've no interest in buying another toy grade machine for which the protocol has already been reversed

On your V686 TX, can you make a capture of the X-axis and Y-axis calibration key (I guess you've to push 40% and 60% buttons for more than 3 seconds), if you don't want to mess with your actual settings, I think you can press the buttons without having the TX bound to the copter as it's a 1 way protocol.

I think this is the only thing we're missing for the V6x6 protocol.