Psa Interface Checker Download 2021 Link

Navigate to your firmware folder and select the desired version file (e.g., APPLI_4.3.0.vci or APPLI_4.3.7.vci ). Click the button.

The is a specialized utility used to identify, upgrade, or downgrade the firmware on the Lexia 3 (PSA XS Evolution) diagnostic interface, primarily to ensure compatibility with Diagbox software. Download Links

If your Diagbox is older (e.g., v5.29), you may need to downgrade to 4.2.2. If you are using 7.82 or higher, 4.3.0 is recommended. psa interface checker download link

Once the correct file is selected, click the (or Flash) button. The utility will begin writing the firmware to your device.

while the progress bar fills.

Checks if the device is a Revision B or Revision C . Revision C is typically required for full compatibility with newer versions of Diagbox (v7.xx and higher).

(if any) is your interface showing?

These missing vital chips on the circuit board. If you attempt to update them, they will revert or lock into Reference B and fail to communicate with newer vehicles (like the Peugeot 308 or Citroën C4 Picasso).

(Trusted community link via Motorcarsoft). Navigate to your firmware folder and select the

To change firmware, use to choose an APPLI.com or vci_updater.com file.

Keep a backup folder of older firmware versions ( 4.2.2 , 4.3.0 , 4.3.2 ) in case you need to downgrade for older software versions like PP2000. Download Links If your Diagbox is older (e