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iButton Converter

iButton Converter is a Flipper Zero application designed for converting iButton key dumps from Metakom or Cyfral formats into the Dallas format. The application supports multiple conversion modes for each format, including well-known and lesser-known encoding schemes.

Features

  • Support for importing Metakom and Cyfral key dump files
  • Multiple conversion modes:
    • Metakom:
      • Direct mode
      • Reversed mode
    • Cyfral:
      • Standard modes: C1, C2, C3, C4
      • Extended modes: C5, C6, C7
  • Output to Dallas iButton format
  • Custom naming for the converted output file

Usage

  1. Launch the iButton Converter application on your Flipper Zero.
  2. Select a key dump file in either Metakom or Cyfral format.
  3. Choose the desired conversion mode:
    • For Metakom: direct or reversed
    • For Cyfral: one of C1–C7
  4. Enter the desired filename for the converted key.
  5. Save the output in Dallas iButton format.

Acknowledgments

Conversion is based on documented and reverse-engineered encoding algorithms.

Special thanks to li0ard for implementing the Cyfral C5–C7 conversion modes and providing consultation on the remaining algorithmic details.

References

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Flipper Zero application for converting ibutton keys of Metakom and Cyfral to Dallas format

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