If you want to play games on PSP, you should first learn to install CSO files on PSP. The following instrctions can help you to install CSO files on PSP.
Step 1---Install Custom Firmware on PSP
First of all you need to install custom firmware on your PSP. Download Custom Firmware.
Step 2---Download PSP Games (CSO File)
Once you’ve installed the custom firmware on your PSP, download your desired PSP Game (ISO/CSO). Google is your best friend. If the downloaded PSP game is a compressed .zip or.rar file then make sure to extract iso/cso using WinRAR.
Step 3---Copy CSO on PSP
Connect your PSP to your computer via data cable. On your PSP, go to Settings > USB Connection.
Your PSP memory stick will appear as a removable device on your computer.
Open the memory stick and go to ISO folder. If there’s no ISO named folder then create one and make sure you name it in Caps (ISO not iso).
Now copy the downloaded PSP Game ISO / CSO file into ISO folder.
Disconnect your PSP from your computer.
Turn your PSP completely OFF by holding down the power button for 7 seconds.
Hold down the R button and turn your PSP ON to boot into Recovery Mode.
Go to Configuration and make the following changes:
o Game folder hombrew (**currently: 5.xx Kernel**) o UMD Mode (**Currently: M33 driver -NO UMD-**)
Go back to Main Menu then Advance > Advance Configuration.
o Enable Plain modules in UMD/ISO o Disable “Execute BOOT.BIN in UMD/ISO”
Go back to main menu and select Exit. Your PSP will Reboot and turn back ON.
Step 5---Play the game on PSP
From the PSP home Menu, go to:
Game > Memory Stick
and play your desired PSP game (ISO/CSO) on Custom firmware.