1. Download the demo zip file. Update: Link URL corrected.
2. Extract the contents of the zip file.
3. Connect your PSP to your computer using a USB cable.
4. Go to the PSP/GAME folder.
5. Copy UCUS98699 folder into the GAME directory. Make sure there are no sub-directories in this folder.
Check out our demos site:
For PSP Fanboy Mobile users: Direct Download from PSP