How can you install games on psp v3.40

You do not need to install games to play them. Although if you mean install homebrew games: You need less than 2.0 firmware to do this: Hook up your PSP to your PC Find it in your 'My Computer' Go to the -- folder Drag and drop the file in the -- folder Disconnect your PSP enjoy (I'm at school now I'll post the folder name when I get home)