Thanks for your answer, yes, I was binding the devices several times, and I agree with you, just changing the module everything should work, but the reality is that the new combination didn’t work, even testing a lot of different communications setups in the transmitter, may be the old operating system is able to handle that but not the open tx, but as far as I know somebody has this combination working

Hola Escrich,
Re "but it’s from the time before the emitter I’m using appeared in the market"
That shouldn't matter now Escrich, as by installing the FS-RM003 TX module you have apparently upgraded your TX to an 'i10' with AFHDS-2A.
Since your IA10B RX also uses the AFHDS-2A protocol they should work together 😉
Have you tried binding them yet? Good luck!
Cheers, Doug 😎

Yes, for sure, but it’s from the time before the emitter I’m using appeared in the market, thanks a lot for your help

is this any help