Go to Control Panel > Programs and Features and uninstall any older Opcom software. Remove existing USB drivers via USBDeview to avoid conflicts.
~45–60 MB for the full package. Any file under 10 MB is almost certainly a virus. Opcom Firmware 1-67 Download
Note: As this software is often subject to copyright, it is recommended to search for specialized Opel diagnostic forums like Digital Kaos or MHH Auto for the most reliable download links, as public file-sharing sites often contain malware. Pre-requisites for Installation: An OP-COM interface (PIC18F458 chip). OCFlash Programmer software. OP-COM firmware version 1.67 ( .hex file). Go to Control Panel > Programs and Features