In this case the problem was Canon. FW fixed the problem without even targeting it...meaning....there was a larger issue with the camera making things not work. Don't be such a fanboy. Canon doesn't need you to defend them.
Even worse problem.Brand new R6 MkII.... connected Rokinon RF 14mm AF. Canon didn't even turn on. Had to remove battery and change to Canon lens. Camera turned on....but would take 5 seconds to turn on instead of near instant as it did prior to conne...