Open Device Manager. Ensure USB Com Board Driver (Multi-instance) is listed under ACTIA USB Devices. Try switching to a USB 2.0 port instead of USB 3.0. "Reference Serial: Unknown"
Click to flash the new firmware to the chip. Do not disconnect the USB cable during this process. Troubleshooting Common Errors psa interface checker download link
It allows users to manually upgrade or downgrade the interface firmware to match the specific version required by their installed Diagbox software. Why is it Crucial for Diagbox Users? Open Device Manager
The PSA Interface Checker (often referred to as PSA Interface Checker Stage x ) is a lightweight software application designed to communicate directly with the XS Evolution OBD2 interface. Its primary functions include: "Reference Serial: Unknown" Click to flash the new
: Retailer blogs like VXDIAGSHOP often include the Interface Checker or VCI Driver as part of their DiagBox 9.85 software bundles. Review: PSA Interface Checker The tool is essential for DIY mechanics using Go to product viewer dialog for this item.