All the emulators you'll ever need are right
here. Where the files need to be put are specific to the emulator but usually go in the GAME380 or GAME folders. For N64, Gameboy, and NES emulators you need roms and you can get those right
here. After you have them put them in the ROMS folder that will show up in the specific emulator folder on your memory stick.
PSX games have to be in EBOOT form and need to be in a folder named after the game. When you've done this just drop it in the GAME folder.
Example of folders (Someone correct me if I'm wrong, I haven't done this in a while):
PSP --> GAME --> Mega Man X4 --> Mega Man X4.eboot
You haven't needed custom firmware to put videos on your PSP. Just convert them to mp4 files and put them in the VIDEO folder in the root of your memory stick pro duo.
Answer back if you need any help and just in case you didn't know, you can now change your firmware installed to 3.80 M33-5 instead of "not sure"!
