I think this is the same as the Argos DS 306....
Well I`m partially there. Without a DVD in the player - eject the tray
1). Press Setup ensure you are showing `General` tab
2). Enter 1389
At this point a list comes up with all sorts of info. At the bottom is Region Code 2. But I`m stumped as to how to change it. I`ve tried all different key combinations I can think of.