# B7C c2 — ANOMALY: unexpected board reset during start (not a time-bootstrap result). Nothing touched on the board.
- Off-time: last UART line of the previous boot 13:14:36.2 (local) → SBL1 Start 13:16:34.05 = ~118 s. RESET-held power-on → lk1st fastboot; `fastboot boot` 10:16:46 UTC rc=0.
- Linux: RTC at boot 15 s (PMIC RTC reset; ~12 s of it spent in lk fastboot) → class A. EMMC-RO 30/30, telnetd, B1_OK=1, aurora-modem start at 9.5 s.
- Time probes 1-2 (QMI_READY, SIM_READY): DMS 3232/3399 ms → INVALID year<2026 (same as c1). Last line: uptime 13.59 `SET: qmicli … --dms-set-operating-mode=online`.
- Then **18.4 s of UART silence, no panic/Oops/watchdog text**, and a new **SBL1 Start at 13:17:20.09** (pm_driver_init 7564 µs, batt 4194 mV).
  lk #2: `pm8x41_get_is_cold_boot: cold boot`, then **fastboot again** (no `Trying to boot`), still waiting in fastboot (18d1:d00d) — this lk enters fastboot only with RESIN (RESET) asserted.
- Host: NCM never came up (board reset before/while NCM came up); telnet timeouts; driver stopped by PID. Host driver bug "NCM … ok" after timeout fixed (now aborts).
- Open: why the reset. Facts: silent (no kernel message), cold-boot PON, RESIN asserted at the second lk. Candidates: RESET held/pressed again ~46 s after power-on
  (PMIC RESIN long-press reset), or a power interruption at radio power-up (SET online) with RESET pressed. Ask the operator how RESET was handled.
- Operator (2026-10-02): RESET held only ~2 s; "может аккум выпал" → most likely cause = battery fell out / lost contact (known flaky battery contact) ~46 s after power-on.
  c2 = INVALID run (external power interruption), not counted, not a B7C failure. Repeated as c2b with the same procedure.