The unit's internal firmware can be managed via a tool called Interface Checker . Popular firmware versions like 4.2.4 or 4.3.0 are often required for newer versions of Diagbox (v7.57 or higher) to recognize the hardware. Common Issues Support - ACTIA IME
If your PC isn't recognizing the VCI (Vehicle Communication Interface) or you’re seeing "Communication Error" messages, a driver update is usually the solution. Why Driver Updates are Critical for the 9780.Z5 actia psa xs evolution 9780z5 driver upd