Firmware Update Log

Fixed: Coriolis compensation was being incorrectly applied to Southern Hemisphere customers. Power Lock units sold to addresses below the equator since v2.4.0 (April 2024) were silently inverting the rotational frame correction, resulting in a phase offset of ~0.00027° that, while inaudible by every available measurement, was wrong on principle.

Added: Solar flare pre-compensation engages 90 seconds earlier following a Kp ≥ 4 advisory from the NOAA DSCOVR feed. Threshold tuned based on 8 months of field data.

Note: Customers with Power Lock units installed at exactly 0.0000° latitude are unaffected by either change. As designed.

Added: Inter-cable phase coordination across multi-cable installations. Zero-Point Digital and AI Cable Equinox units within 5 metres of each other now share a brief handshake on power-up to align their respective optimisation clocks. Reduces sub-picosecond jitter contributions when multiple cables are routed in parallel.

Fixed: Memory leak in the harmonic prediction subsystem that caused a measurable but inaudible degradation after approximately 47 days of continuous operation. Reboots were not required, but were recommended. They are no longer recommended.

Deprecated: v2.x firmware will continue to receive security patches through 2027-04-01. After that date, v2.x units will be transitioned to the long-term support branch.

Added: South Atlantic Anomaly transit awareness. NAS-1 units within the SAA will pause platter realignment during periods of elevated geomagnetic flux (≥35,000 nT residual) to avoid overcorrection. Affects all units between 60°W–10°E and 50°S–10°N.

Fixed: The 72-hour micro-adjustment routine now correctly accounts for International Atomic Time (TAI) leap seconds. Previous behaviour ran the realignment 1 second early during leap-second insertions, resulting in a sub-arcsecond cumulative drift that nobody noticed and we are not entirely sure was a real defect, but we fixed it anyway.

Removed: Experimental 'hemispheric audit' diagnostic mode. It was diagnosing things that did not need to be diagnosed.

Added: Re-trained signal-optimisation neural network on the 2025 equatorial reference corpus. Inference latency reduced 11% across all tiers (Tropic, Meridian, Equinox, Zero-Point). Per-metre optimisation now compensates for cable bend radius below 200mm, addressing a long-standing measurable artefact that nobody could hear but that disturbed our chief engineer.

Fixed: Edge case where AI Cable Zero-Point would intermittently return spatial-resolution decisions in the wrong hemisphere when paired with a turntable rotating clockwise (this is the normal direction; the bug was specifically that the cable was correcting away from it).

Removed: The on-device confidence indicator. Magnetic neutrality is not a confidence interval.

Release-candidate firmware for the Calibration Receiver Equinox. Adds DST-aware geomagnetic phase tracking — the unit now correctly handles civil time changes at calibration centres in latitudes that observe daylight saving time, which we admit was an oversight.

Known issue: Klingon dealer locations report time in qaStaHvIS, which the firmware reads as a leap second every 1.5 hours. We are aware. The dealer staff have learnt to compensate manually.

Added: Power Lock Mini support — the same firmware now runs across the full Power Lock product line. Internal model number now reported as PL-MINI-2026 / PL-2026 in diagnostic output.

Fixed: A timing race in the cellular modem reconnection logic that could cause Power Lock units to report 'NOAA feed unavailable' for up to 90 seconds following a tower handoff. Connection is now restored in under 8 seconds in 99.7% of cases.

Beta firmware for the Cesium Clock Zero-Point. Implements gravitational time-dilation correction for installations above 200m elevation. Per General Relativity, atomic clocks at altitude run measurably faster than at sea level — this firmware adjusts the disciplined output to compensate, ensuring all Equatorial Audio installations remain phase-aligned regardless of altitude. The correction is on the order of 10⁻¹⁶, which we acknowledge is below any threshold of audibility, but consistency matters.

Beta caveat: the correction is calibrated for installations between 0m and 4,000m elevation. Cuzco-area customers (~3,400m) report stable behaviour. Lhasa-area customers (~3,650m) are within tolerance but should report any anomalies.

Added: Continuous platter monitoring at 0.5° resolution (previously 1.0°). NAS-1 units now log azimuthal drift at 24-hour intervals and request a service visit when drift exceeds 0.003°.

Fixed: A regression in v1.6.4 caused the alignment subscription service to attempt north-south realignment in the Southern Hemisphere as if it were the Northern. Affected units have been quietly recalibrated during the routine 72-hour update window. No customer action required.