Things You'll Need
Instructions
Find the latest version of PMPlayer Advance at PSP Hacks (see References). As of this writing, it is the 3.1.2 version. Click on the relevant link under the PSP image to begin downloading the application.
Decompress the downloaded file. As it will have saved to your hard disc as a .rar compressed file, you need an appropriate program, such as WinRar, to do the job. The result of the decompression is a folder. Check the folder to ensure the "EBOOT.PBP" file is included.
Connect the PSP with your computer using its USB cable. When you have attached the two, go to "Settings" on the PSP's menu, and press "X" on the "USB Connection" option.
Copy the whole file to your memory stick's address. X (the memory stick) :\PSP\GAME\PMPlayer Advance 3.1.2. When it's pasted, press "O" on your PSP to end the USB connection safely.
Open the player through the Memory Stick Games option on the PSP.