4.4.0 — Psa Interface Checker

If you are running newer versions of Diagbox (e.g., 7.x, 8.x, or newer), they often require firmware version 4.3.0 or higher.

The Lexia 3 XS Evolution interface connected to the laptop via USB ( connect it to the car's OBDII port during checking or flashing).

This guide covers everything you need to know about downloading, installing, and using version 4.4.0 safely. What is PSA Interface Checker 4.4.0?

Прога PSA Interface Checker — Сообщество - Drive2 psa interface checker 4.4.0

: Serves as a recovery method if a clone device was accidentally updated online, which can sometimes "brick" or deactivate the unit. Version 4.4.0 Specifics

You may need an external EEPROM programmer tool to re-flash the core chip data, or use specific recovery utilities bundled with the 4.4.0 package to re-inject a valid serial number. 3. Software Freezes During Flash

The PSA Interface Checker is an official utility software used to detect and modify the firmware version embedded inside the Lexia 3 XS Evolution communication interface. If you are running newer versions of Diagbox (e

| Error Code | Message | Solution | |------------|---------|----------| | | USB device not recognized | Reinstall FTDI chip drivers using Zadig or CDM v2.12.28. Avoid Windows Update drivers. | | E-204 | VCI handshake timeout | Your interface may have a counterfeit FTDI chip. Use FTCleaner tool to reset EEPROM. | | E-307 | Vehicle voltage unstable | Start the engine. Check OBD pin 16 (12V) and pin 4/5 (ground). PSA vehicles need >11.8V. | | E-412 | Protocol mismatch (CAN vs K-Line) | Manually set protocol in checker: Click “Advanced” → For pre-2010 PSA, choose “ISO9141-2 (K-Line)”. | | E-509 | Log write permission denied | Run checker as Administrator. Also check C:\ProgramData\PSA\Logs is not read-only. |

Version 4.4.0 scans your installed drivers (especially the FTDI and STMicroelectronics virtual COM port drivers) and reports if they are outdated, unsigned, or tampered with – a common issue with malware-ridden “cracked” setups.

Whether you are a weekend DIY mechanic working on a Peugeot 206 or a professional shop managing a fleet of Citroën Jumpers, integrating version 4.4.0 into your daily workflow is a non-negotiable best practice. Download it from a verified source, run it every time, and drive with confidence. What is PSA Interface Checker 4

If all boxes are green, you may proceed to programming. If any test fails, stop immediately – you risk corrupting the BSI.

PSA Interface Checker 4.4.0 is a utility program used to manage and update the firmware of the Lexia 3 (VCI) diagnostic interface

Extract the files and right-click APPLIEXT.exe or the main executable. Select . Step 3: Checking Interface Status

Here’s a general review of based on typical enterprise interface monitoring tools. (If you meant a different tool or a specific use case — like Peugeot/Citroën diagnostics — please clarify.)