Your PSP is likely running official Sony firmware instead of Custom Firmware, or your CFW version is outdated.
Because the PSP lacks a second analog stick, homebrew developers mapped the controls to mimic the console layout creatively: minecraft psp 321 fatzip install
Fatzip . The name sounded heavy, industrial. It wasn't just a file; it was a compressed archive of code that would force the aging hardware to do something it was never designed to do. It contained the textures for dirt, the code for creepers, and the logic for a procedurally generated world, all squeezed into a format the PSP could swallow. Your PSP is likely running official Sony firmware
Open the removable drive corresponding to your PSP on your computer. It wasn't just a file; it was a
How to Install Minecraft PSP 321 Fatzip on Your PlayStation Portable
If you don't have a physical PSP or prefer to play on your computer, phone, or tablet, you can use the PPSSPP emulator. It's free, open-source, and can run almost all PSP homebrew with high performance.