It would be listed on the support site of the Samsung website in your region next to the manuals.
What's your country's region from this list? I'll be happy to check for you, and if one exists, provide a link.
My tv samsung LE 40A 550 can play mp3 and shows images formatted in jpg, but at the same time i want to play movies also. if i upgrade firmware, can i play movies? and i can not find related firmware for my lcd. can anyone help me?