sagemono
Member
Kohada
A repair & tuning toolkit for the PS3 system controller (syscon)
What is it?
Kohada is a tool that talks to the PS3 syscon (Mullion / Sherwood) over UART. It dumps and edits the syscon EEPROM, decodes the error log, and exposes a pile of documented EEPROM config knobs (fan curves, voltages, clocks, XDR timings, the Cell config ring) behind a single GUI.
It's an early release and very much a work in progress, but it's at a point where it's useful, so I'm putting it out to the people who'll get use from it.
⚠ READ THIS FIRST ⚠
Features
Platform support
Screenshots
Download
Releases - Download here
Source / contributing
Kohada is not open source - but the error code database is published so the scene can improve it. If you've decoded a syscon error the tool doesn't recognise, or have better repair context for an existing one, PRs to that file are welcome:
github.com/sagemono/Kohada
Disclaimer
Provided "as is", no warranty of any kind. You assume all risk for any damage to your hardware or data. Not affiliated with or endorsed by Sony.
- sagemono
A repair & tuning toolkit for the PS3 system controller (syscon)
What is it?
Kohada is a tool that talks to the PS3 syscon (Mullion / Sherwood) over UART. It dumps and edits the syscon EEPROM, decodes the error log, and exposes a pile of documented EEPROM config knobs (fan curves, voltages, clocks, XDR timings, the Cell config ring) behind a single GUI.
It's an early release and very much a work in progress, but it's at a point where it's useful, so I'm putting it out to the people who'll get use from it.
⚠ READ THIS FIRST ⚠
Features
- EEPROM dump - self-sizing dump of the full syscon NVS (20 KB / 32 KB auto-detected) plus the secondary 0x48xxx pages, saved to a single self-describing container file.
- Console identity restore guard - before a restore it reads the QA token + platform ID + manufacturing strings from the live console and compares them to your backup, so you can't accidentally flash one console's EEPROM onto another.
- EEPROM hex editor with a named region map and automatic checksum fix-up.
- Fan curve editor - drag-to-edit curves per thermal zone, with factory presets.
- Voltage tuner - Cell/RSX VID editor with a safety-gated range.
- CELL / XDR overclocking - clock-generator PLL configuration.
- XDR memory timing override - full 46-entry MIC descriptor editor.
- Config ring editor - Cell BE config-ring patch sources + scatter table.
- NVS tweak panel - typed editors for the documented syscon NVS fields.
- Error-log decoder - reads and decodes the syscon error log against a community-maintained code database.
Platform support
- Mullion (CXR713 / CXR714 - early fat consoles): primary target, well supported.
- Sherwood (late fat / slim / super-slim): very limited. Some features may not work or may be broken entirely. Treat Sherwood support as experimental for now.
Screenshots
Download
Releases - Download here
Source / contributing
Kohada is not open source - but the error code database is published so the scene can improve it. If you've decoded a syscon error the tool doesn't recognise, or have better repair context for an existing one, PRs to that file are welcome:
github.com/sagemono/Kohada
Disclaimer
Provided "as is", no warranty of any kind. You assume all risk for any damage to your hardware or data. Not affiliated with or endorsed by Sony.
- sagemono
