The original file is the ECU software as the vehicle left the factory. It is kept as a backup before software modifications and, afterwards, used to return the vehicle to factory condition or to make comparisons.
What is the original file?
Every vehicle leaves production with a specific ECU software version. This version is prepared according to the engine, gearbox, hardware and regional requirements. The vehicle in this untouched state is called the "original file".
Why is the original file needed?
- To create a safe return point before software modifications
- To return to factory condition if you do not like the results of a software
- To return to factory software before selling the vehicle, a warranty claim or an authorised service visit
- To compare the modified file with the original
- To reload the software when the ECU fails or is replaced
How is the original file obtained?
There are two ways. The first is to read and keep the original file from your vehicle with your own reading equipment before the work; this is the safest way. The second is to request an original file from MyEcuFile by sharing your vehicle and ECU details. If a suitable file exists in our database, the version suitable for your vehicle is sent.
Why is the right version of the file important?
Even on the same model, ECU hardware and software versions can differ. Writing a file of the wrong version to the vehicle can stop the engine from running or make it run incorrectly. That is why it is important to share the ECU label information, the software number and the vehicle chassis details in full when making a request.
When creating a request
It is enough to select your vehicle in the panel and tick the "Original File" service. If you have the current ECU file, you can also upload it so we understand which version is targeted.
Frequently asked questions
Yes, if you have suitable equipment. Reading and keeping the file is the safest backup for any work done later.
It can be offered for vehicles registered in our database. Where it is not available, the file must be obtained by reading it from the vehicle.
The ECU software returns to the factory version. Mechanical (hardware) changes must be restored separately.