Plug your VCI into your PC’s USB port (you don't need to connect it to the car yet). Run the Tool: Open PSA_Interface_Checker.exe .
To change firmware, click Select File to choose a specific APPLI.com file, then click Downloading to begin the flash. This process usually takes less than a minute. PSA Interface Checker and Lexia Version - French Car Forum psa interface checker 4.4.0
: Confirms if the interface is "Initing" or "Ready," helping troubleshoot connection failures between the vehicle's OBD port and the PC. Plug your VCI into your PC’s USB port
To clarify, “PSA” could refer to several things in a technical context: psa interface checker 4.4.0