Binding FrSky RX impossible

Hello,
I have 2 receivers FrSky, X8R and G-RX8, already used with a taranis QX7, I want to use them with my T8SG Plus, but the binding does not work, is there a special procedure for FrSky?
Thank you for any answer that can help me.

same problem here with jumper t8sg v2+

For these receivers the deviation protocol to use is FrskyX.
Try binding with the Freq-Fine protocol option set from -127 to +127 in steps of 10.
Bind by powering on the receiver with the F/S button held down, then activate Bind in deviation model setup.
After binding move Freq-Fine up and down to find the max and min values where bind is lost. Leave it set to a value halfway between min and max.

A big thank you for your answer.
Silly question, I am a beginner with JUMPER, could you tell me how to get Freq-Fine protocol option set?
Thank you

To get to protocol options go to the Model setup page, select the protocol button, and press ENT.

Hello, it works! thank you very much for your help.