HRM Pro stuck on firmware 7.4

Hi,

I'm using HRM Pro with Instinct 2. As mentioned in the title - after a month of usage still running same 7.4 firmware. I have disabled auto-updates in the watch since I'm manually installing beta builds. Does this affect updating the accessories, too? Any way I can force the update or make a manual one?

Thanks.

EDIT: I paired HRM pro directly to GCM and updated it. Does having HRM pro paired both to watch and phone have any downsides/benefits?