Found the combination - volume down and enter key puts remote into pairing mode.
IR works out the box.
Trying to get mic to pick up something I say. I can see on the screen its not picking up my voice.
Restarted LIT box. Google assistant now working. Awesome! I think the updated LIT box with the new remote is brilliant value. I can't see any reason to use a different device when this does everything the family needs with no issues for us now.

