Sony's handheld has one of the best-documented homebrew scenes around — custom firmware turns any PSP into a capable NES machine.
Unlike DS, no extra cartridge hardware — just custom firmware and a memory stick.
Settings → System Information tells you your current PSP firmware.
Follow a CFW guide matched to your specific model and firmware version.
Place it under the PSP/GAME folder structure.
Create a ROMs folder the emulator can browse to.
The homebrew emulator appears alongside your regular PSP games.
The PSP's D-pad and face buttons map directly to an NES layout.
Save anywhere using the emulator's own save-state system.
Stretch or letterbox the 4:3 NES output to fit the PSP's screen.
NES emulation is light work for the PSP's hardware.
On DS or a phone instead? Here's where to look.
Most PSP units are long out of warranty by now, but CFW does modify system software — proceed at your own discretion.
Yes, though PSP Go's setup differs slightly since it uses M2 cards instead of Memory Stick Pro Duo.
It's a risk with any firmware modification — follow a guide matched exactly to your model and firmware version.
One of the most established homebrew scenes makes this a well-documented process.
See Setup Steps