Firmware version 1.67 is a stable aftermarket revision. It was engineered to balance compatibility between older k-line communication protocols and newer CAN-bus networks used in modern vehicles. Key Technical Specifications
If that does not work, you can use a dedicated flashing tool such as to manually downgrade or upgrade the firmware.
Fully compatible, but requires users to disable Driver Signature Enforcement during the initial setup to install the custom FTDI USB drivers successfully. Step-by-Step Installation Guide
Facilitates the adding of new keys or deleting lost ones (requires the PIN code). Opcom 1.67 Firmware
to the "Drivers" folder included with your software package. If using Windows 10 or 11, you usually need to Disable Driver Signature Enforcement before the drivers will install correctly. Software Selection : Opcom 1.67 works best with software versions like Vaux-Com 120309a or specialized versions like Professional 150406b Firmware Verification : Open your diagnostic software and go to Test Interface
: Scan all modules (Engine, Transmission, ABS, Airbag) for stored errors.
If your adapter uses a genuine FTDI chip, ensure you are using stable driver versions, such as 2.8.30 . Firmware version 1
If you only have Windows 11, run a Windows 7 32-bit VM (VirtualBox or VMware).
Disclaimer: This post is for educational purposes. Modifying vehicle firmware or using third-party diagnostic tools carries inherent risks. Always backup your ECU data before programming.
✅ It’s cheap and works reasonably well for older Vauxhalls/Opels (Astra H, Corsa D, Zafira B era). ❌ The Bad: Most units sold as "1.67" today are low-quality clones. They struggle with Windows 10/11, the drivers are a nightmare to find, and support stops at cars built around 2014. Fully compatible, but requires users to disable Driver
Have you had success with the 1.67 firmware, or was it a headache? Let me know in the comments! 👇
Anti-lock Braking System (ABS) and Electronic Stability Program (ESP) Airbag systems (SRS) Instrument Cluster (IPC) Climate Control (HVAC) Automatic Transmission 3. Advanced Programming and Coding
Reads and clears manufacture-specific Diagnostic Trouble Codes (DTCs) across all modules.
As mentioned, never click "Check for Updates" in the software. This will ping the official servers, identify your device as a clone, and disable the hardware.