Scroll down this page then go to the Resources section located at the near bottom and download the Megaupload Toolbar. Install the toolbar. Don’t worry, it’s virus-free. You just need this to be able to download from Megaupload.
Step2
Download WinRAR in case you don’t have one. The download link is also in the Resources section of this page. WinRAR is needed to open and extract the files you downloaded. If you already have WinRAR installed on your computer and know how to use this tool, you can skip this step.
Step3
Go to Resources section of this page and click Game Download Link to download the game.
Step4
When you’re done downloading, open the file using WinRAR and extract the ISO/CSO or game folder anywhere you like.
Step5
Copy the extracted ISO/CSO or game folder and put it on your PSP’s ISO folder. Example: X:\ISO where X is your drive letter like C:\ or D:\ and so on. Make sure you have a folder named ISO on your PSP’s memory stick root. CSO files are also placed in the ISO folder. You also need a Custom Firmware which can run ISO/CSOs. I provided a link for all the custom firmware downloads that you will need in the Resources section.