Mmcodingwriter stores user templates in ~/.mmcw/templates/ . Version 2.4 deprecates the old .json template format in favor of .toml for better readability. Run the provided migrate_templates.py script (included in the 2.4 package) to auto-convert.

Check the MMCodingWriter Community for the latest change logs and troubleshooting tips. ⚠️ Important Safety & Legitimacy Note

Fewer errors when writing to the ETACS compared to older versions like 1.8 or 2.1. Quick Checklist for Success: Cable: Use a high-quality J2534 passthru device.