My presumption is that if this firmware update were an essential update, we would have heard about it from Panasonic. It seems to be a minor tweak reflecting some specifics that some users might have encountered. In the absence of a "must have" statement from Panasonic and with the lack of a prior version of firmware to revert, I honestly think it best to leave well enough alone. As my wife tells me, it's just a guy thing to want to tinker.
Ned Soltz
Ned Soltz