If your OPCOM uses the older PIC18F458 chip, upgrading to 167 is not recommended, as it will likely not work properly. Why Choose 1.67 over Other Versions?
: Genuine "version 5" hardware often supports multiple firmware reflashes within the 1.33 to 1.67 range, allowing for manual optimization for specific control units. Comparison of Firmware Iterations Firmware 1.67 (2021 Ver.) Firmware 1.95/1.99 Stability Highly Verified/Stable Mixed; some reports of ECU initialization failures Year Support 1987 – 2021 1987 – 2021+ Preferred SW OP-COM 200603a OP-COM 200603a Processor Verification and Diagnostic Use
Firmware 167 for the OpCom diagnostic adapter has been successfully verified. The unit communicates reliably with supported Opel/Vauxhall ECUs, performs full diagnostic reads and clears, and supports coding and basic module programming for compatible modules.
Halfway through the write cycle, the unverified firmware glitches on the CAN bus. The checksum fails. The ECU enters a bootloop. The Opcom software crashes.
This occurs if you flash a fake chip or if power is interrupted. If the bootloader was preserved, you can try flashing a lower, stable version like 1.45 to revive the unit. opcom 167 firmware verified
The number “167” refers to a specific version of the firmware embedded in the device’s microcontroller. In the ecosystem of clone devices, firmware is the soul of the machine. Official OPCOM units from the now-defunct German company Scan-Tool Scandinavia are rare and expensive, leading to a flood of Chinese clones. These clones often suffer from corrupted, mismatched, or counterfeit firmware. Thus, the act of verification—the software checking the hardware’s firmware against a known hash or signature—is a critical security handshake. When a user sees “OPCOM 167 Firmware Verified,” it signifies that the PC-side software has successfully authenticated that the interface box is running a legitimate, uncorrupted version of firmware revision 167. It is the all-clear signal before the engine control unit (ECU) is interrogated.
: The interface must contain a genuine PIC18F458 chip. Many clones use the PIC18F45K80, which may fail during firmware flashing or display communication errors.
Over the years, various firmware versions have been released, including 1.39, 1.45, 1.59, 1.64, 1.70, and 1.99. However, newer does not always mean better in the world of aftermarket diagnostic clones. The Problem with Fake Firmware (v1.70 to v1.99)
The biggest danger in the OPCOM world is "bricking" (rendering unusable) your interface by trying to flash 167 firmware onto a clone that doesn't support it. If your OPCOM uses the older PIC18F458 chip,
The software communicates with the car's ECUs (Engine Control Unit, ABS, Airbag, etc.) through an interface cable, which contains a PIC18F458 microcontroller.
If you see red text, or "Unknown Device," or "Firmware Mismatch," you are running unverified firmware.
Do not blindly attempt to force newer software variants to connect to your V1.67 interface unless the documentation explicitly states compatibility. Always run a "Test Interface" command within the software settings menu before connecting the tool to your vehicle's OBD2 port. Troubleshooting Common OP-COM V1.67 Issues
Initiating forced static regeneration for diesel particulate filters. Comparison of Firmware Iterations Firmware 1
Many cheap interfaces labeled as 1.95 or 1.99 are actually older, less stable firmware versions disguised with a higher number. 1.67 is generally authentic to its claims.
OP-COM 167 Firmware: The Definitive Guide to a Verified Diagnostic Setup
The primary use of an OP-COM interface with properly verified 1.67 firmware is to conduct comprehensive diagnostics and coding on General Motors (GM) vehicles, specifically Opel, Vauxhall, Holden, and Chevrolet models manufactured between 1987 and 2016. A functional tool can perform dealership-level functions, including reading and clearing fault codes across all electronic control units (ECUs) like the engine, transmission, ABS, and airbag systems. It can also perform advanced coding functions such as programming new ignition keys, activating hidden features like cruise control or fog lights, and configuring replacement ECUs.
Unlike some "fake" high-version firmwares (like 1.99), a verified 1.67 is less likely to contain malicious code that locks the PIC18F458 chip.
To help you get the most out of your diagnostic setup, tell me: