To put a downloaded game on your PSP (PlayStation Portable), you need to purchase the full game and then install it by simply extracting the files into a folder (which has specifically been created for this purpose) on your personal computer, opening the set-up file and following the instructions that will appear on the screen.
You can also download free demo versions of the games you want from the Internet and installing them on your computer. It must, however, be kept in mind that your PlayStation Portable should support these games before you proceed to download them.
If the firmware of your PSP is not compatible with these downloaded games, it will either corrupt your files or not start them. You should make sure that you are downloading an iso file with a psp tag.
You can also download free demo versions of the games you want from the Internet and installing them on your computer. It must, however, be kept in mind that your PlayStation Portable should support these games before you proceed to download them.
If the firmware of your PSP is not compatible with these downloaded games, it will either corrupt your files or not start them. You should make sure that you are downloading an iso file with a psp tag.