Nope, still broken.
I did have it working for a short time after the previous update (not the latest version), whilst having it plugged in on USB it would allow muting through the microphone with the audio cue but not when in wireless mode.
However since updating iCUE firmware (along with my other corsair devices) it has fully stopped working again.
As before I can only get the mute function to work when iCUE is disabled.
TBH corsair have been less than helpful with this and not even replied to email.
I'll be getting rid of this shortly and potentially changing brands, as i've also had issues with my mouse buttons.