Small electronics factories began producing "clone" interfaces. These were USB-to-OBDII cables that mimicked the original hardware. To make these clones work with newer cars, they needed firmware updates.
While 1.67 was great at the time , the market has been flooded with clones. Opcom 1.67 Firmware
1.67 is relatively stable but, like all clones, it may struggle with very new vehicles (2014+) or specific immobilizer functions. Use Proper Drivers: While 1
Op-com 1.67 firmware is a specialized version of the internal software for the OP-COM diagnostic interface, primarily used for comprehensive dealership-level diagnostics and coding of Opel (Vauxhall, Holden) vehicles manufactured between 1987 and 2016 Technical Specifications and Features Hardware Foundation : Reliable interfaces utilize the PIC18F458 microcontroller FTDI FT232RL/FT232RQ chips Core Diagnostic Capabilities
(both 32-bit and 64-bit), though disabling driver signature enforcement is often required on newer versions of Windows. Core Diagnostic Capabilities