How to pair device with BMW helmet ?

Magram Registered Users Posts: 2
Apprentice Traveler
I have tried to pair my new Rider 550 with my BMW helmet without success.
TomTom finds the BMW helmet but won't pair. It works with CARDO FREECOM1 but I don't have another full face helmet to fix it to.
Very expensive device that I expected to work with other top end products !
Please confirm that it works with the BMW EVO system 6.