[FREE OPENSOURCE] romHEX14 - ECU CALIBRATION SOFTWARE

romHEX14 — Community Edition
Open-source ECU calibration hex editor — Windows / macOS / Linux

Version: 1.0.0-beta6  ·  License: GPL-3.0  ·  Account required: No  ·  Cloud lock-in: None

---

Hey all,

Releasing the community / open-source build of romHEX14, a cross-platform ECU calibration hex editor I've been building. Everything runs local — no account, no telemetry, no phone-home.

---

► What it does

• Open ROMs, browse maps, edit cells with live 2D / 3D map view and waveform preview
  
• Patch creation + management (.rxpatch), full undo/redo, crash-recovery autosave
  
• Native project format (CBOR + BLAKE3 integrity checksums)
  

► File formats

• A2L — full ASAP2 parser (characteristics, axes, measurements)
  
• HEX / BIN / S19 — auto-detection
  
• OLS project import — pulls ROM + map definitions straight out of WinOLS files (schema 479 incl., per-map byte order, CJK names)
  
• KP map pack — offset auto-detection
  

► ECU coverage

• Bosch — MED17, MG1, MD1, EDC17, EDC16, EDC15, ME7, ME9, MED9, MSV, MSD
  
• Continental — SIMOS 12/16/18/19/22, SID, SCG, SCM
  
• Delphi — DCM3.x, DCM6.x, DCU-10x
  
• Denso — multiple generations
  
• Magneti Marelli — MJD, 7GV / 8GMK
  
• Valeo — VD46
  

► Platforms
Pre-built binaries for Windows 10+ and macOS 12+ on the releases page. Linux (Ubuntu 22.04+) — build from source.

► Optional AI assistant
Bring-your-own-key, strictly opt-in, off by default. Supports Claude, GPT-4o, Qwen, DeepSeek, Gemini, Groq, Ollama, LM Studio. Runs against local models if you prefer.

► Languages
English  ·  简体中文  ·  Español  ·  ไทย

---

► Coming in next beta (already merged on main, not yet tagged)

• Side-by-side hex compare with diff-cluster navigation
  
• Byte-twin similarity search across your local catalog
  
• Lua scripting engine — port your WinOLS scripts
  
• Catalog Tune Suggestions — aggregates per-cell deltas across similar files in your library
  

---

► Download / Source

Releases: github.com/ctabuyo/romHEX14-community/releases
Source: github.com/ctabuyo/romHEX14-community
中国镜像: gitee.com/liuyanpeng14/romHEX14-community

Feedback, bug reports, and PRs welcome on GitHub. Cheers.

Good job, thank you

you can add option load maps from csv files

you can add option load maps from csv files

It's coming on the next beta8

Beta 7 released with several important updates.



https://github.com/ctabuyo/romHEX14-community

you can add option load maps from csv files

Beta8 Release: CSV Mappack feature: www.romhex14.com