| Feature | ISO Tool 131 | YACC (PC) | PSP Filer | | :--- | :--- | :--- | :--- | | | ✅ Yes | ❌ No (PC only) | ✅ Yes | | Prometheus patching | ✅ Yes | ❌ No | ❌ No | | CSO compression speed | Medium (PSP CPU) | Fast (PC CPU) | Slow | | Ease of use | Moderate | Easy (GUI) | Complex |
If the game still fails to load, return to the main menu and select “Patch Prometheus” or “ME Driver” . This modifies the PSPISO’s module files to bypass firmware checks. iso tool 131 pspiso
Navigate to your game (e.g., God_of_War.iso ). Press the O button (or X depending on region). | Feature | ISO Tool 131 | YACC
| Feature | ISO Tool 131 | YACC (PC) | PSP Filer | | :--- | :--- | :--- | :--- | | | ✅ Yes | ❌ No (PC only) | ✅ Yes | | Prometheus patching | ✅ Yes | ❌ No | ❌ No | | CSO compression speed | Medium (PSP CPU) | Fast (PC CPU) | Slow | | Ease of use | Moderate | Easy (GUI) | Complex |
If the game still fails to load, return to the main menu and select “Patch Prometheus” or “ME Driver” . This modifies the PSPISO’s module files to bypass firmware checks.
Navigate to your game (e.g., God_of_War.iso ). Press the O button (or X depending on region).
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