This json is included in the firmware directly and stores security related data needed by the bootloader.

"minimal_signatures_match": 3,
"fingerprints": [
"build_timestamp": 1582627354
  • minimal_signatures_match is the minimum number of signatures that must pass validation.

  • fingerprints are used to validate the root certificate insinde the bootball.

  • build_timestamp is the UNIX build time of the bootloader.

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