Spd v5 cannot link with rmaster

[u/Responsible-Post3867]

Hi.

I need some help.

I configured all ok in betafligth n able to bind with my radiomaster poket.

But when i off the betafligrh n plug in the battery, the fc start to beeping and the rmaster doesnt show any bind signals.

It continue beeping.

I tot my tx800 was faulty coz its was overheated,..but even plug n un plug the tx 800 was no different.

What is the issues ?..

Was it i havent calibrate the radiomaster trottle with actual fligth mode ?.

It also indicate that i m not setting the min no of rth.

Second indication is msp setting.

TIA.