Original file
Audi A6 original file Bosch · 4F0907401B · SW 377320
Audi A6 kW OriginalCalibrated ECU file for 4F0907401B (SW 377320). Checksum-corrected, ready to flash. Delivered instantly via secure download after payment.
How it works
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Read your ECU
With KESS, KTAG, AutoTuner or Flex. Keep the read: it is your way back.
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Match the numbers
Your read must show hardware 4F0907401B and software 377320.
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Pay and download
Card, Apple Pay or Google Pay. The file is in your account straight away.
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Write it and drive
Write it back the way you read it. Not right for your car? We correct it free.
What the car needs
Required modifications: Factory.
Hardware
- Factory hardware: no modifications required
Software / calibration
- OEM calibration restored (recovery / immobiliser / coding work)
Original files are used to revert to factory state, repair after a faulty tune, or recover an ECU before service work.
Vehicle & ECU specifications
Exact vehicle, engine and ECU identifiers this calibration file is written for. Cross-check against your ECU before flashing.
| Vehicle make | Audi |
|---|---|
| Vehicle model | A6 Kw |
| ECU manufacturer | Bosch |
| ECU ID | 4F0907401B |
| ECU software | 377320 |
| Calibration stage | Original (Factory) |
| File format | BIN / ORI |
| Checksum | Pre-corrected (ready to flash) |
| Delivery | Instant download after payment |
About this calibration file
This is the factory (original) ECU calibration for the Audi A6 Kw, extracted from a genuine stock control unit. Use it as a verified backup before flashing any performance tune, or as a reference when recovering an ECU from a failed write.
This file matches a Bosch ECU and software version 377320. Verify both identifiers in your flashing tool before writing — an ID mismatch is the most common cause of a bricked ECU. If you are unsure, upload a read of your original file via the file-request wizard and our engineers will confirm compatibility before you flash.
The file is delivered as a ready-to-flash BIN (and ORI backup where applicable) compatible with all major tools — KESS V2/V3, KTAG, AutoTuner, CMDFlash, Dimsport New Genius, MPPS, Flex, BFlash, PCMFlash, MMFlash — via OBD, bench or boot-mode as supported by your ECU family. Checksums are pre-computed and verified; no additional checksum tool is required. All files include a free revision if post-flash logs reveal a fuelling, boost or EGT issue.
Frequently asked questions
Product details
This product contains a complete original ECU backup (stock file) for Audi A6 KW with Bosch 4F0907401B (Bosch software number 377320 ( 1037377320 )). This file is ideal for ECU cloning, restoring the car back to stock and using it as a safe base for future remaps.
All ECU tuning files from TUNING-DATABASE are prepared for professional use. They are useful whenever you search by ECU ID, hardware or software number such as 4F0907401B, 377320 (1037 + SW code). Use this file for diagnostics, cloning, recovery or as a base for custom remapping.
65AABDBF 7062E226 3DD5FB62 DA71466F 5DDEC807 B2B333D2 B8AF5BDB 02E15F6B