Download of OP-COM Basic-B 150406b 15.0 was on the developer's website when we last checked. We cannot confirm if there is a free download of this software available. This free software was originally developed by Auto-M3.
The software lies within System Utilities, more precisely Device Assistants. According to the results of the Google Safe Browsing check, the developer's site is safe. Despite this, we recommend checking the downloaded files with any free antivirus software.
From the developer:
OP-COM is a diagnostic program package for Opel / Vauxhall cars. This program allows you to acess to all control units, display and clear Diagnostic Trouble Codes (DTCs), reset / reprogram Service Interval (SRI), and change Variant & CAN configuration. Basic version provides private customers a cost effective method for diagnosing cars.
You may want to check out more software, such as OP-COM Prof 150406b, which might be related to OP-COM Basic-B 150406b.