Psa+interface+checker+440+2021 ((better)) 🎯 No Survey
– Some clone interfaces fail the “VCI ID” test in Checker 440 but still work in Diagbox. Ignore if actual vehicle diagnostics work.
Firmware must match the specific DiagBox version in use. The release of v4.4.0 fits into the broader update path as follows: Firmware Version Compatible DiagBox Software Release DiagBox v7.61 to v7.65 v4.3.4 DiagBox v7.66 to v8.02 v4.3.7 DiagBox v9.12 to v9.68 v4.4.0 (2021) DiagBox v9.91 and higher v4.5.0 DiagBox v9.109+
The was launched alongside DiagBox v9.91 and higher . It allows the interface to talk correctly to modern CAN-bus architectures used in PSA vehicles built up to late 2021 and 2022. Key Features of Version 4.4.0 psa+interface+checker+440+2021
: Allows users to "flash" or update the internal software of the interface. This is critical if a "clone" device has been accidentally updated via the internet (which can block the device) or if it fails to recognize a specific car. Key Usage Steps
Optimizes the hardware to accurately scan electronic modules on modern vehicles like the Peugeot 3008, 5008, Citroën C5 Aircross, and modern Opel/Vauxhall platforms sharing PSA architecture. Firmware Version Compatibility Reference – Some clone interfaces fail the “VCI ID”
While older versions (like v4.3.3) were common for years, "2021" refers to updates needed for the hardware to communicate with more modern PSA vehicles (e.g., Peugeot 308 2021 models) or to work with newer software builds like or higher.
: Open the Interface Checker and click Activate ; the status should change to "Inisialisation OK". Check Version : Click Version to see your current firmware. The release of v4
Connect the Lexia 3 VCI to your PC via the USB cable. (Do not plug it into the car's OBD port yet). Launch PSA Interface Checker.exe .
If you click "Download" and the program finishes almost instantly (within 1 second) and the LED on the interface does nothing, the flash has failed. To resolve this:
