M33 v1.04 by iHaiDeeZ
PPSSPP port for PSP games, with rewind on L2 and a quick menu for save states
Install on your PS4
Package (.pkg): with GoldHEN running, copy M33-v1.04.pkg to the root of a USB drive (exFAT or FAT32), plug it into the PS4 and install it from Settings › Debug Settings › Game › Package Installer.
From a computer or phone: give this link to a remote package sender (GoldHEN's Remote Package Install, or Remote Package Installer on port 12800):
https://store.brewology.com/dl/6204/M33-v1.04.pkg
Files
| File | Size | SHA-256 | |
|---|---|---|---|
| M33-v1.04.pkg | 106.8 MB | 1c374eaa…7ffb | Download |
Screenshots
About M33
The first start creates /data/March33/. Your own disc games go in /data/March33/games/ as .iso, .cso or .chd. Homebrew goes in /data/March33/PSP/GAME/, each EBOOT.PBP in its own folder. Saves sit in PSP/SAVEDATA as on a memory stick, so they copy to and from a real PSP.
Games render at 4x, 1920x1088, with FSR sharpening. Hold L2 to play backwards and R2 to fast-forward. L3 + R3 opens a quick menu with save states and their pictures, rewind, resolution, volume and experimental frame generation, which the developer says shows a 30 fps game at 60. All of PPSSPP's own settings are still there, and RetroAchievements works when the PS4 is online.
With the PSP's own system software installed, M33 can start into the real PSP XMB and play the game boot animation. That's optional, and the developer's guide covers it.
If a game stutters in busy scenes, the developer puts it down to the PS4's CPU and suggests turning rewind off for that game, and Boost Mode on a PS4 Pro.
Games render at 4x, 1920x1088, with FSR sharpening. Hold L2 to play backwards and R2 to fast-forward. L3 + R3 opens a quick menu with save states and their pictures, rewind, resolution, volume and experimental frame generation, which the developer says shows a 30 fps game at 60. All of PPSSPP's own settings are still there, and RetroAchievements works when the PS4 is online.
With the PSP's own system software installed, M33 can start into the real PSP XMB and play the game boot animation. That's optional, and the developer's guide covers it.
If a game stutters in busy scenes, the developer puts it down to the PS4's CPU and suggests turning rewind off for that game, and Boost Mode on a PS4 Pro.
Release notes
v1.04 · M33 1.04 · Oct 20, 2026
Fixed
- Exit in M33's menu now takes you back to the PS4 home screen. Before, the PS4 reported it as the app crashing.
Install
Install M33-v1.04.pkg with GoldHEN's Package Installer, on top of 1.03: your games, saves and settings in /data/March33/ stay as they are.
Questions and game reports: Discord.