I got this second hand and it comes with 3.40 OE-A. Problem, is, I can't seem to play any games on it (memory card), it keeps saying 'Game could not be started'. My games are in .cso, never tries .iso yet. I googled around and it says I should disable No-UMD, but when I enter recovery mode it's already disabled.
On a related note.. my recovery mode runds really slowly. The blue screen comes on, but after every button (up, down, X, O, ect), the screen turns black and it takes a full minute or two to enter the next screen.