M0M0-Phantom v2.1 — Solar Mesh Relay Released

After 6 months of field testing across 14 countries, M0M0-Phantom firmware v2.1 is now available for deployment.

Key improvements: deep-sleep current draw reduced from 12µA to 4.2µA, extending field operation to 21+ days on battery alone. Solar MPPT charging is now 18% more efficient under partial shade conditions.

Store & Forward buffer expanded from 100 to 500 messages with prioritization based on packet age and TTL. Critical mesh control packets now bypass the queue entirely.

AES-256 channel rotation has been implemented — channels can now rotate keys on a configurable schedule (default: 24h) to mitigate long-term traffic analysis.

Flash via meshtastic CLI: `meshtastic --port /dev/ttyUSB0 --flash`. Existing Phantom nodes will retain their configuration after flashing.