Opcom 167 Firmware Work Site

For advanced users, monitor the raw bus traffic using RealTerm:

This is the safest method, applicable when your Opcom is already recognized but outdated.

Step 1 – Driver installation:

Step 2 – Launch Opcom software:

Step 3 – The firmware update:

Step 4 – Verification:

Historically, OP-COM firmware versions had a hierarchy: opcom 167 firmware work

Why choose 167? If you have an interface reporting Firmware 167, it generally indicates you have a newer "V2" style clone. These are preferred because they usually have:

Here’s a review based on the typical user experience with OP-COM 167 firmware (often used for Opel/Vauxhall diagnostics). I’ve written it as if from a real DIY mechanic or workshop user.

Title: Works as expected – but know what you’re getting into
Rating: ⭐⭐⭐⭐ (4/5) For advanced users, monitor the raw bus traffic

I’ve been using the OP-COM 167 firmware for a few weeks now, mainly on early 2000s–2010 Opel/Vauxhall models (Astra H, Zafira B, Corsa D). Here’s my honest take.

Originally, Opcom was a professional-level diagnostic tool for the GM Europe platform. Due to its popularity, the Chinese market produced clones (replicas). The "167" designation typically refers to the hardware found on PCBs labeled OP-COM 09.2012 or similar, using a particular PIC microcontroller and FTDI USB-to-serial chip.