I'm very sorry for the inconvenience this has been. Unfortunately, you can't downgrade firmware. I'd suggest that try resetting your player: http://www.samsung.com/us/support/SupportOwnersFAQPopup.do?faq_id=FAQ00031780&fm_seq=47930
Just updated my 4600 to the latest 2.22 firmware and blu ray discs no longer play. only dvds. Any help would be appreciated. Is it possible to downgrade firmware? Where can these be found as i have had no luck locating older ones.
Any help is greatly appreciated.