I wouldnt reccomend changing the firmware unless you must, f series codes with a new vfc would dictate if you need firmware or not. fyi: as new versions are released errors are often made in the programming side and sometimes cause a problem that is not repairable until a new version is released (dealers wont sell old firmware)
This is ONLY to be used to report flooding, spam, advertising and problematic (harassing, abusive or crude) posts.