nobody_special , your player would be using the v9.0.xx series firmwares here
http://www.mympxplayer.org/actions-9...mare-dc37.html
You'll need to try all of those for your screen size as it is impossible to tell which firmware would work properly with your player.
And also, the Samsung K9LAG08U0M is a 16Gigabit (2 GigaByte) memory chip. Unless you have 2 of such chips, your player had been hacked to show 4GB.