Ensure you have the USB drivers for the Actia device installed.
Downgrade firmware for old PP2000 software; upgrade for new Diagbox software.
Allows changing the serial number of the interface (often used to make clone devices recognized as older or newer "Revision" units). Understanding Interface Revisions: B vs. C
Open Windows Device Manager. Ensure your device shows up under USB controllers as "ACTIA USB Devices" or "Evolution Driver." If it shows a yellow exclamation mark, reinstall the drivers manually. "Init Failed" or "Init OK - Version: Unknown"
Instantly identifies the current firmware version (e.g., 4.3.0 or 4.3.5) running on your interface. psa interface checker 4.4.0
If your interface firmware is outdated, Diagbox will display communication errors or fail to recognize the connected car.
Shows the current version of the interface firmware (e.g., APPLI_xx, Bootloader).
Launch the application and click "Activate" . Follow this by clicking "Version" to see your current firmware (e.g., 4.3.0 or 4.4.0) and "Reference" to see your hardware serial information.
Many users still rely on version 3.x or 4.1.x. Here is why 4.4.0 is the current benchmark: Ensure you have the USB drivers for the
: Run PSA Interface Checker.exe as an Administrator.
Ensuring the hardware is recognized by the software as a legitimate "Evolution" device. Update Management:
Displays clear fields for Version , Reference , and Serial Number to check if your tool is blacklisted or restricted.
Version 4.4.0 introduced a hidden feature: . If you hold Ctrl + Shift while clicking “Start,” the tool will attempt to re-flash the interface’s bootloader. Warning: Only do this if you have a bricked unit; it can permanently destroy non-flashable clones. Understanding Interface Revisions: B vs
: The VCI must be connected to the PC via USB. You do not necessarily need to be connected to the car's OBD-II port just to check or flash the firmware. How to Use the Tool Connect : Plug your PSA interface into a USB port. Launch : Run PSA_Interface_Checker.exe . Activate : Click the "ACTIVATE" button to establish a link.
The firmware version (4.4.0) is the internal software that allows your diagnostic interface to communicate with the DiagBox software on your computer. It's crucial to match the firmware version to the correct version of DiagBox, as version incompatibility is a major source of connection failures.
firmware to maintain compatibility with older, more stable versions of Lexia or PP2000 software.
the "Evolution" status of the hardware to ensure it supports the full range of CAN-bus and K-Line protocols. 4. Technical Environment Connectivity : Requires a USB 2.0 connection.
Plug your Lexia 3/XS Evolution interface into your computer via USB (you do not need to connect it to the car for this check).