Ok, I'm a noob at using PSP ISOs. I simply made the iso folder, put MGSA in it, installed CFM 3.71 M33-3 and UMD Emulator V0.8C. I thought the ISO would work this way based on al the videos I watched, tutorials I watched and question I asked here weeks ago. Regular games on UMD still work fine, but I can't get the ISO on the card to even show up when I look on the stick for it from the PSP. I can't get rid of v. 3.51. I'll worry about putting games on it some other time. I just want to get this firmware off.