PERON Flash Tuning Guide

Posted by Ant Pearson on

Download the PERON flash install software HERE ( windows compatible only )


Once it's downloaded and installed connect your flash programmer tool to your car’s OBD port and turn on the ignition.

Open the PERON program and follow the on-screen instructions.


The program will identify the ECU before giving you the option to read the ECU.

Select read ECU, then when prompted select Full Read With Data. You will then be presented with 2 files, save these files to your desktop. Close the PERON software and turn the ignition off.


Email the 2 files to

As well as the two files, please follow the link below to the PERON Software Request Form, select file, download into Word before completing the form. 


Please attach this form in your email with the subject of: (Order # / Stage? / Vehicle reg / Full name / Decel ?)

Follow up your email with a call to us on 01924 228042 to let us know you've sent the file. It can take up to 48 hours to receive your files back.

The PERON upgrade file will be emailed back to you as quickly as possible. The file will be sent back in a zipped format, save and extract this file to your desktop.

With the flash tool plugged in and ignition on, open the PERON flash software and follow the on-screen instructions. Once the ECU has been identified you will be able to select programme ECU. You will be prompted to select the upgraded file. Select the unzipped file.

Once the upload has been completed close the PERON software remove the OBD flash tool and enjoy your newly mapped Ford Fiesta ST.

If you encounter the following error, “unable to find USB”

Use the following online guide on driver signatures.

Once you have disabled driver signatures, remove the software, reboot the laptop and reinstall.

Want to talk to someone?

Call the AET Motorsport team on 01924 228042.


1 comment

  • when is this open to, what times? What times am i able to send the files away and get them back, the car is a daily so i would need it the following day

    Matt Rushall on

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