Here's why:
* Region Locking: The PSP has region locking. This means that games are coded to work only on consoles from the same region (NTSC for North America, PAL for Europe, etc.).
* Different TV Standards: NTSC and PAL use different video standards, which means a PAL console can't display NTSC content properly.
What can you do?
* Buy a PAL Version: The easiest solution is to buy the PAL version of Persona 3 Portable, which is compatible with your PSP-3000.
* Modify Your Console: You can try modding your PSP to remove the region locking. However, this is a complex process and might void your warranty.
* Use a Custom Firmware: Custom firmware can be used to remove region locking, but it's generally considered a more advanced technique and requires some technical knowledge.
Important Note: Before modifying your PSP, be sure to back up your data and research the risks involved.