A4 BOSCH Crypto — quick EEPROM service for Audi A4 RB4/RB8 clusters 
Small, focused Windows utility for Bosch “crypto” instrument clusters used in the Audi A4 (8E/8H). Open an EEPROM dump, view Old km and Trip km, set the New km value, and save a corrected file with checksum handled automatically. Designed for workshop use after cluster repair or replacement.
What it does
Typical workflow (high level)
Use cases
Compatibility
Tested on Windows 10 LTSC (2019). Also runs on Windows 7 / 8 / 10 / 11 (x86/x64).
Minimum system requirements
Notes & best practice
Legal notice
This software is intended for legitimate service tasks (module repair, replacement, and restoration of correct data). Odometer tampering for misrepresentation may be illegal in your region. Ensure all work complies with local laws and customer documentation.
Disclaimer
Information above is compiled from the provided screenshot and public knowledge for educational/archival purposes. Any files referenced are hosted by third parties; our forum does not host or distribute software and is not responsible for external content.
Small, focused Windows utility for Bosch “crypto” instrument clusters used in the Audi A4 (8E/8H). Open an EEPROM dump, view Old km and Trip km, set the New km value, and save a corrected file with checksum handled automatically. Designed for workshop use after cluster repair or replacement.
What it does
- RB4/RB8 support — targets Bosch crypto clusters commonly fitted to Audi A4 B6/B7.
- Read & display current odometer and trip values from the dump.
- Safe edit — enter a new calibrated mileage; tool recalculates checksums/crypto bytes for you.
- Fast workflow — Open → Set new mileage → Save corrected EEPROM.
- Compact & portable — lightweight executable for quick bench jobs.
Typical workflow (high level)
- Read the cluster’s EEPROM with your programmer and save the dump.
- Open the dump in A4 BOSCH Crypto, review Old and Trip.
- Enter the New calibrated value, then Save the corrected file.
- Write the file back to the cluster and verify on the bench/vehicle.
Use cases
- Instrument cluster refurbishment or replacement
- Restoring correct mileage after EEPROM corruption
- Calibration during module swaps in the same vehicle
Compatibility
Tested on Windows 10 LTSC (2019). Also runs on Windows 7 / 8 / 10 / 11 (x86/x64).
Minimum system requirements
- OS: Windows 7 or newer (32/64-bit)
- CPU: Dual-core 2.0 GHz+
- RAM: 2 GB (4 GB recommended)
- Storage: <50 MB free
- Extras: External EEPROM programmer (read/write), bench power supply
Notes & best practice
- Always back up the original dump before making changes.
- Use stable power and verify the result on the bench prior to installation.
- Vehicle coverage focuses on Audi A4 RB4/RB8; other Bosch/VDO clusters are not guaranteed.
Legal notice
This software is intended for legitimate service tasks (module repair, replacement, and restoration of correct data). Odometer tampering for misrepresentation may be illegal in your region. Ensure all work complies with local laws and customer documentation.
Disclaimer
Information above is compiled from the provided screenshot and public knowledge for educational/archival purposes. Any files referenced are hosted by third parties; our forum does not host or distribute software and is not responsible for external content.
