{
  "schema_version": 1,
  "date": "2026-10-18",
  "specimen_serial": "XXXXXXXXXXXXXXXX",
  "firmware_evidence": "AudioFormats-2026-10-18.json",
  "preceding_streaming_evidence": "AudioStorageStress-2026-10-18.json",
  "ram_counter_attempt": {
    "method": "Read SRAM after targeted, audio-quiescent BOOTSEL entry; validate retained telemetry before interpreting counters.",
    "latest_status_address": "0x20003f68",
    "latest_status_first_five_u32": [
      0,
      0,
      0,
      0,
      0
    ],
    "latest_status_bytes_read": 40,
    "receive_rejections": 0,
    "i2s_stalls": 0,
    "retained_telemetry_matches_preflight": false
  },
  "interpretation": "The sampled SRAM does not retain the known live telemetry. These zero words cannot classify the preceding underrun or overrun events. No live-counter-zero or memory-clearing cause is established.",
  "reboot_observation": {
    "software_bootsel_and_application_reboot_completed": true,
    "initial_hid_discovery_after_500_ms_failed": true,
    "hid_succeeded_after_runtime_registry_enumeration": true,
    "baseline_snapshot_restored_byte_identically": true,
    "observed": [
      {
        "kind": "capabilities",
        "serial": "XXXXXXXXXXXXXXXX",
        "firmware": "74c1c8ab-dirty",
        "clock_hz": 150000000,
        "flash_bytes": 4194304,
        "features": 3
      },
      {
        "kind": "state",
        "generation": 5,
        "muted": 1,
        "attenuation_db": -24
      },
      {
        "kind": "status",
        "persisted_generation": 5,
        "storage_available": 1,
        "streaming": 0,
        "input_peak": 0,
        "output_peak": 0,
        "underruns": 0,
        "overruns": 0,
        "max_processing_us": 933,
        "deadline_us": 1000
      }
    ],
    "default_output_uids_unchanged": true
  },
  "unchanged_scope": [
    "No firmware replacement during this follow-up.",
    "No original-flash image, OTP/security setting, unrelated USB device, default output, driver attachment, or parent hub changed."
  ],
  "open_runtime_cases": [
    "Classify the single post-stop underrun using live diagnostics.",
    "Confirm actual USB suspend/resume rather than an API success return.",
    "Exercise malformed HID reports on the specimen."
  ]
}