The Opcom 1.67 firmware represents a mature stage in the development of low-cost, enthusiast-level diagnostic tools for Vauxhall and Opel vehicles. It successfully integrated CAN-bus capabilities into a USB-native architecture, enabling diagnostic depth previously reserved for dealer-level tools. While it is now legacy technology, succeeded by newer hardware revisions, the 1.67 firmware remains a critical component in the automotive aftermarket for servicing the generation of vehicles produced between 2000 and 2010. Its utility, however, is inextricably linked to the quality of the hardware clone it resides upon and the stability of the FTDI driver stack.
If you own an Opcom interface (the black or blue USB box) for diagnosing Opel/Vauxhall vehicles, you’ve likely heard about Firmware 1.67 . Unlike software versions (e.g., Opcom 150810e), the firmware is the code running on the interface itself. Version 1.67 is widely regarded as the most stable and versatile release for pre-2010 models. Opcom 1.67 Firmware
Firmware 1.67 is the gold standard for Opcom users working on 2000–2010 Opel/Vauxhall vehicles. If your interface already has it, never attempt to “update” it. If you’re buying a new Opcom, specifically request one preloaded with FW 1.67 and software 150810e. The Opcom 1