Hi, I have a psp which has the 3.50e custom firmware installed. I have a problem with some games. When I try to run them, I get the error 80020148 (that is PRX type unsupported). The fact is that I get it regardless of the media (being original UMD or iso on the memory stick) and always with the same games. Innocent Life for example (I have both original UMD and ISO). Metal Slug anthology, as another example, runs perfectly, but when I choose "Metal Slug 6" from the internal menu, I get that error again, and I'm back to the psp menu. I don't really know what to do. I've installed 3.50 custom on friends PSP and they don't have this problem. At first I thought it was memory stick problem, but changin it didn't solve, and as I said, I get it even with original games. Anyone has a clue? Thank you in advance.