PSP Firmware
The PSP firmware is like the operating system of the PSP. It controls all the software and hardware functions of the PSP. Each batch of PSP firmware is different. Only earlier firmware versions are able to play downloaded games for psp. These are psp firmware version 1.00 and 1.50.
To check your PSP firmware version, go to system settings menu and select it. Then select system information and select the option system software. It will tell you the firmware version for your PSP.
Playing movies and mp3 are fine, only downloaded games. There are some emulators or PSP hacks that can get past this limitation since all new PSP shipped nowadays have firmware 2.00 and above. However, it is not safe and may actually damage the firmware of your PSP. Read More
Comments