If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.If you are at an office or shared network, you can ask the network administrator to run a scan across the network looking for misconfigured or infected devices.This list is for any firmware version, just make sure you write in the notes what version you tested the game on. The manuals are uploaded by fellow PSP gamers and are ready to be used on your PSP, if you are on 3.52 m33, make sure you have run the 3.52 Update 4 or they wont work.. For example, using the SLUS code for Metal Gear Solid UK/PAL won't work.
However, using game id fixes (to fix game freezes) work as long as the original game id & game id fix are the same in S*US or S*ES format.
So if you original game id is SLUS...., and the game id fix is SCUS then that is ok. Tested on 3.90 M33 -Cheska 3.80: Crashed after character is chosen at a blank screen if left too long.
Solution: After chosen character, the screen will go black, immediately press the X button and the game will run normally. SLPS-01222: Freezes once entered police station, same way it does with american version if game id isnt changed. NOTE: Debug menu when pressing select works to change location, including police station.
By 2PS SLPS-00222: Freezes when man in gun shop speaks (funnily enough, straight after he says freeze! If you use the default Game ID it will freeze after the "Chapter 1" screen. When you do use one of these game IDs you'll sometimes notice a little slowdown or some stuttering in voices, but at least the game works.
3.52 and below: Use Game ID SLPS-01156, SLPS-01724, or SLPS-01222.
3.71 and 3.72: Game ID SLPS-01156 and SLPS-01724 will work. Also the slowdown and stuttering in voices is slightly better.EBOOT needs to be made with CDDA Popstation 1.24 (don't forget, you'll need keys.bin). 4.01: If you use Game ID SLPS-01490 then gameplay and voices are MUCH better.However if you try to watch the opening cinematic after starting a new game it will freeze at a black screen after it zooms in on the castle. 3.00 - 3.41: Works, but earlier versions have poorer sound quality.Noticable frame skipping & slowdown (video only) in the more detailed 3D environments, like towns.Battles run perfectly, although later spells may change this (unable to test this myself).3.42 & 3.51: Same as above, but the sound is perfect. After the Capcom logo you will get a blank white screen.