Last updated: Q2 2025 – Compatible with Opcom USB 1.5 and 2.0 clone revisions C and D. Always verify your hardware revision before flashing.
The 1.67 version is often cited as the "sweet spot" for compatibility. It offers several critical advantages over other versions: Opcom Firmware 1-67 Download
Opcom hardware and firmware are of General Motors' diagnostic system. Distributing firmware may violate copyright laws in some countries. This guide is for educational purposes and for owners repairing their own vehicles. Commercial use is not endorsed. Last updated: Q2 2025 – Compatible with Opcom USB 1