After 240+ hours of development, I'm excited to announce PSPFatSave — a full-featured savestate plugin for the PSP-1000 (Phat), running under ARK-4 6.61 CFW.
Project Links:
GitHub Repository: https://github.com/Grunwalskii/PSPFatSave-Public
v708 Release (Download): https://github.com/Grunwalskii/PSPFatSave-Public/releases/tag/v708
https://github.com/Grunwalskii/PSPFatSave-Public/releases/tag/v708
Extract and choose:
PLUGINS.TXT:
game, pspfatsave.prx, on
Restart your PSP. Press NOTE (short tap) in-game to open the menu.
REQUIREMENTS
✓ Save/load within same game session: Reliable
⚠ Cross-session load (different boot/power cycle): Occasionally unreliable
⚠ Audio issues or crash after loading from game start/intro/menu: Known issue, game depended.
⚠Do not expect it to work with other plugins ("prxshot_png_mod_by_lman_v0.2_fixed" for example messes up OC Warning message, Auto Start and Intro Skip function)⚠
SAFETY GUIDELINES
Safe: Save during normal gameplay. Avoid saving during videos, transitions, or loading screens.
Risky: Loading from game start, intro, or main menu can cause crashes or audio issues (missing soundtracks after load).
Backup Memory Stick data before use.
DEVELOPMENT
This codebase was developed in 240 hours of combined programming time in my free time.
FEEDBACK & ISSUES
Please report bugs or compatibility issues on the GitHub Issues page:
https://github.com/Grunwalskii/PSPFatSave-Public/issues
Include:
Please only consider donating if you are ok with the current state of the Plugin:
https://ko-fi.com/W1L623I6WG
Project Links:
GitHub Repository: https://github.com/Grunwalskii/PSPFatSave-Public
v708 Release (Download): https://github.com/Grunwalskii/PSPFatSave-Public/releases/tag/v708
OVERVIEW
The PSP-1000 Phat has 32MB of RAM (vs. 64MB on Slim/Brite), making it incompatible with PSPStates v2. This plugin implements a novel staging architecture that uses the game's own RAM/VRAM as temporary storage, allowing full savestates on Phat hardware.KEY FEATURE:
Savestates
- Multiple save slots per game
- Compression
- Customizable default slot
OPTIONAL FEATURES:
Live Performance Overlay (optional)
- Real-time FPS counter (1s / 0.5s / 0.2s window modes)
- 1% Low FPS (stutter metric)
- Frametime histogram (visual frame-time distribution)
- CPU/GPU bottleneck highlighting (color-coded text + chart bars)
System Monitoring (optional)
- CPU Usage % (idle-clocks based, same method as PSP-HUD)
- GPU Usage % (GE busy-duty-cycle estimate)
- Automatic bottleneck detection
Battery Status Overlay (optional)
- OFF / Percent / Percent+Time / ALL tiers
- Percent+Time: estimated remaining discharge/charge time
- ALL: voltage, current, temperature, capacity, cycle count
- Charge state indicator (↑ charging / ↓ discharging)
- Memory Stick write-speed benchmark (MB/s during save)
Overclock
Game Intro Video Skip (optional)
Auto-Open Savegame browser on Game Boot (optional)
Frame Limit (25-60 FPS cap) (optional)
DOWNLOAD & INSTALLATION
Download pspfatsave-v708.zip from the release page:https://github.com/Grunwalskii/PSPFatSave-Public/releases/tag/v708
Extract and choose:
- debug/pspfatsave.prx — Debug build with logging (MS, Screen, UART) (182 KB)
- release/pspfatsave.prx — Release build, no debug code (102 KB)
PLUGINS.TXT:
game, pspfatsave.prx, on
Restart your PSP. Press NOTE (short tap) in-game to open the menu.
REQUIREMENTS
- PSP-1000 only (PSP Slim/Brite users should use PSPStates v2 or other alternatives)
- ARK-4 6.61 CFW
✓ Save/load within same game session: Reliable
⚠ Cross-session load (different boot/power cycle): Occasionally unreliable
⚠ Audio issues or crash after loading from game start/intro/menu: Known issue, game depended.
⚠Do not expect it to work with other plugins ("prxshot_png_mod_by_lman_v0.2_fixed" for example messes up OC Warning message, Auto Start and Intro Skip function)⚠
SAFETY GUIDELINES
Safe: Save during normal gameplay. Avoid saving during videos, transitions, or loading screens.
Risky: Loading from game start, intro, or main menu can cause crashes or audio issues (missing soundtracks after load).
Backup Memory Stick data before use.
DEVELOPMENT
This codebase was developed in 240 hours of combined programming time in my free time.
FEEDBACK & ISSUES
Please report bugs or compatibility issues on the GitHub Issues page:
https://github.com/Grunwalskii/PSPFatSave-Public/issues
Include:
- Plugin version
- Which game
- What was happening when the issue occurred
- Debug log (if available ms0:/pspstates_debug.txt)
Please only consider donating if you are ok with the current state of the Plugin:
https://ko-fi.com/W1L623I6WG
