Things You'll Need
Instructions
Insert a Memory Stick Pro Duo into your PSP.
Power on the PSP and scroll to the far left menu and select "Update Firmware".
Install the downloaded firmware onto your PSP by agreeing to the automatic installation.
Access the web browser on the PSP and navigate to a website that offers Flash games for your PSP. Example websites include PSPFlashGaming.com and FlashGameFans.com
Select the game you wish to play and select "Download" from the website.
Select "OK" when the PSP prompts you to download the content.
Exit the PSP browser and locate the game under the menu heading "Games" and the sub-menu "Memory Stick". Press X to begin the game.