XK K110 (S-FHSS) build for Devo 7E and Devo 10

Hi,
i have a DEVO 12S under deviation with 3 in 1 module since many years and all works very well.
But today I have received a Blast XK 110, and I don't arrive to bind them together...
I have tried to change fréquemment fine from 0 to 50 (1 by 1), but impossible to bind...
Have you got a .ini file for this model on demo 12S ?
Have you got an idea why I can't bind on XK110 and how to resolve this ?
Thanks for your help.
Best regards.

Spend a few hours experimenting and wondering why my K110 won't bind and updating firmware multiple times, after reading this I learned I need to update hardware.ini after installing CC2500 chip. If you see '*S-FHSS' instead of 'S-FHSS' - this means you need to enable protocol in hardware.ini (and install chip, if you haven't done so).

This thread is a goldmine. Thanks to everyone who contributed!