Manually trigger components like cooling fans or fuel pumps to verify functionality. 📥 How to Download and Prepare

Opcom is a Vauxhall/Opel-specific diagnostic interface. Unlike generic OBD2 scanners, Opcom can communicate with proprietary vehicle systems such as:

The firmware V1.39 is relevant almost entirely to the clone market, as users attempt to update their cheap interfaces to support newer vehicles or fix bugs in previous versions.

In 2021, Microsoft pushed a Windows Update that included FTDI’s ftdibus.sys version 2.12.28.0. This driver actively by setting their USB PID to 0x0000 . Once bricked, no firmware reflash is possible without hardware reprogramming.

By 2021, the automotive world had already moved on to newer protocols like UDS (Unified Diagnostic Services) on CAN bus. However, Opel/Vauxhall vehicles produced between (including models like Astra H, Zafira B, Vectra C, Corsa C/D) were perfectly supported by the 1.39 firmware.

If you have landed on this page, you are likely an owner of a grey-market Opcom interface—a popular, low-cost diagnostic tool for older Vauxhall and Opel vehicles. You are searching for the elusive version.