Cause: Windows has blocked the driver due to signature issues or resource conflict. Fix: Re-do Step 2 (Disable Signature Enforcement). If that fails, change the assigned COM port in Device Manager > Properties > Port Settings > Advanced > COM Port Number. Use COM 1-4.
Microsoft has progressively tightened security. Older ACTIA drivers (pre-2014) are unsigned or use deprecated certificates. Windows 8, 10, and 11 will automatically block these drivers. The 9780Z5 often ships with a driver from 2012. A proper update is required to bypass or disable signature enforcement. actia psa xs evolution 9780z5 driver upd
Even with the guide above, issues occur. Here are the top fixes for the actia psa xs evolution 9780z5 driver upd process. Cause: Windows has blocked the driver due to
ACTIA drivers are often unsigned or test-signed: The driver is the software bridge that translates
Before diving into the driver update process, it is essential to understand what the 9780Z5 actually is. The ACTIA PSA XS Evolution is the official VCI (Vehicle Communication Interface) used by PSA dealerships worldwide. The number 9780Z5 typically refers to a specific hardware revision or a bundled part number for the interface unit designed for the Chinese and European aftermarket, though it is widely used globally.
Unlike generic OBD2 scanners, the 9780Z5 is a multiplexed interface. It communicates over several protocols:
The driver is the software bridge that translates commands from your Windows laptop (running Diagbox, PP2000, or Lexia) into electrical pulses that the 9780Z5 sends to the car’s ECUs. Without the correct driver, the $500+ interface becomes an expensive paperweight.