So basically I'm new to the PSP scene and want to use my PSP for "Homebrews" and "Backups" But the thing is I've got a PSP 2003 'Slim & Lite' with official firmware version 4.05 on it. I bought it pre-owned and see that the PSP has custom themes on it (like 'Tasty Treat' & Resident Evil 4 Custom theme),don't know if that means it's hacked or not though. But anyways I want to hack my PSP 2003 which has Ver 4.05 installed to run homebrews etc. Is it possible? Do I need a pandora batter and Magic Memory Stick? If not can I like do that chickHEN thing? Other Details: Serial No. HB0369817 Firmware: 4.05 PSP 2003 PB BTW: The PSP doesn't have any Memory Sticks so how's it running these custom themes?