I have the Nazgul5 4s analog version with a fr-sky R-XSR receiver preinstalled and I’m currently trying to bind it with my BetaFpv Literadio 2 SE. I watched lots of videos about how to bind it but I tried so many times for about 5 hours and still can’t do it. And the frustrating thing was that I could connect it with betaflight on my computer and already change the OSD and look at it in the goggles, I did every settings and all that, but the only thing missing was the RX connection. At the beginning I thought one button (written BOOT next to it) on the esc board was the bind button. But on the videos, people weren’t even touching that. Instead they were taking out the whole receiver and holding a button on that. So after a couple hours of trying with the "boot" button, I’ve finally found the real bind button on the receiver. I tried holding it while plugging in the lipo and the light turned constant red and green. With my Literadio 2 SE, I then tried binding it in every protocol. Nothing worked. Please could someone help me?? Thanks, Marc.

Hi Marc,

I always had a hard time holding down the bind button on the receiver and  trying to plug the battery in...so...I now have battery wire with a push button switch so that that I can hold the button down WHILE connecting the power...then release the button...then push the bind button on the transmitter. That is pretty much it. It will either bind or not. Turn off power on quad and transmitter. Try it.

This assumes that the transmitter and receiver are on the same protocol. I am assuming that the receiver is FrSky D16 ACCST protocol.

I don't know anything about the BetaFPV LiteRadio 2 SE...so I won't be any help there.

Also, if MOTOR stop Flag is turned on, the quad might arm, but the motors will not spin until the throttle is raised.

I would connect it to Betaflight and see if you can ARM and if you get stick movement. In the Betaflight MODES tab, when you turn ON the transmitter ARM switch, the tic mark should move to a position under the orange slider and the box to the left should turn red...this is normal. Check for stick movements in the RECEIVER tab. Disconnect, make sure the throttle is all the way down, try to ARM the quad.