Search original ECU files by software number (SW), hardware number (HW) and ECU identification. Each indexed page is designed to help workshops locate the closest exact-match stock file before a restore, comparison or calibration job.
Search by ECU software number
The software number is one of the most useful identifiers when matching an original ECU file. Use the exact SW shown by your diagnostic or programming tool whenever possible, then cross-check the hardware number and ECU family before writing.
What these files are for
- Returning a modified ECU to a known stock calibration.
- Comparing an unknown file with an original reference.
- Starting a supported remap from a verified stock file.
- Supporting recovery when the required memory area and ECU identity are known.
What to verify before download
- ECU manufacturer and family.
- Software number (SW).
- Hardware number (HW).
- Vehicle and engine information.
- File type and read method required by your tool.
A matching vehicle name alone is not enough to prove compatibility. If the identifiers conflict, stop and verify the controller before writing.
For the matching workflow, read How to Match ECU Software Identifiers. You can also browse original ECU files or review Full Backup vs Virtual Read vs Calibration File.
For a Bosch-specific workflow, match Bosch SW and HW numbers. If the choice is between restoring the installed revision and updating it, compare exact ECU revision vs OEM update.