If you want a vehicle returned to standard software, explain why and describe its present hardware. “Back to stock” should be a clearly agreed job, especially where a previous owner has changed parts or where the calibration history is unknown.
A manufacturer-tool example
AutoTuner’s VAG FRF guidance describes a supported process that selects a complete original file compatible with the identified ECU. It explains that this operation removes previous software changes. The supported choices depend on the identified ECU and the files available through that system.
That reference does not make an arbitrary FRF file suitable for every Volkswagen, Audi, SEAT or Skoda. Nor does writing standard ECU software undo physical changes elsewhere on the vehicle.
Describe the outcome you actually need
Are you asking for a known calibration change to be removed, investigating a drivability complaint, or trying to establish the specification of a used car? Include the reason in the enquiry. It affects the questions that need answering before work is agreed.
Send the current ECU identification and any reliable record of previous programming. List known hardware changes, recent manufacturer updates and existing faults. If the history is uncertain, retain that uncertainty in the job description rather than labelling a downloaded file as the vehicle’s original.
Questions for the proposed work
- How has the intended file been matched to this ECU and software state?
- Does the fitted hardware suit the proposed standard configuration?
- Which checks are included after programming?
- What record of the completed work will be supplied?
AXION can review a supported original-software or calibration enquiry using those details. Availability depends on the exact unit and the authorised software route. A particular tool’s feature list is not confirmation that AXION can perform that operation on every listed vehicle.
Discuss any existing or proposed modification with your insurer as appropriate. Restoring one software file should not be presented as proof that every modification has been removed or that the car meets every condition of an insurance policy. Keep the completed job record with the vehicle documents.
Reference and next step
AutoTuner VAG FRF selection guidance. Ask AXION to confirm support for your ECU, tool and requested operation.
Explore ECU calibration, testing and file support or send the vehicle details to AXION. Workshop visits in Didcot and suitable UK trade or remote-support arrangements must be agreed in advance.