You need to be on a custom firmware 3.03 OE-A or higher to play home-made PSX games. Check by going to Settings - System Settings - System Information. Custom firmwares are identified by looking at the System Software Version number - if there's letters after the number, you're on custom firmware. (Examples - 3.30 OE, 2.71 SE, 3.80 M33.) If there's no numbers, you're on official firmware, and you'll need to get onto custom firmware. If that's the case, please tell us which firmware you're on.

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