This guide provides a safe pathway to download the PSA Interface Checker, how to use it, and what to look for when testing your hardware. What is the PSA Interface Checker?

Obtaining the PSA Interface Checker usually happens as part of a larger diagnostic software suite bundle. Because it is legacy software that relies on proprietary Actia/PSA drivers, official manufacturer links for standalone downloads do not exist for the general public.

2.1.0 Last Updated: April 22, 2026 File Size: 8.3 MB Compatibility: Windows 10 / 11, Windows Server 2019+

Which version of (e.g., v7.83, v9.91, v9.150) are you trying to use?

To get the most out of PSA Interface Checker, keep the following tips in mind:

Identifies the connected device and establishes communication.

It displays the current firmware version flashed onto the interface microchip (e.g., V4.3.0, V4.3.7).

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After analyzing over 20 sources, I’ve verified two reliable methods to obtain the legitimate tool.

In this comprehensive guide, we will cover:

If you are having trouble with the connection, ensure your is the latest version. PSA interface tester - French Car Forum

https://github.com/psa-diag-community/interface-checker/releases/download/v1.9.4/PSA_Interface_Checker.exe (Always verify the MD5: 2C8B4F1A9E7D3C5B6A0F4E2D8C7A9B1F after download)

Many affordable Lexia 3 clones sold online are shipped with old, restricted firmware. The checker verifies if your tool is recognized as a genuine "Evolution" interface or a generic revision.