Firmware Update

adafruit-nrfutil --verbose dfu serial --package firmware-rak4631-2.7.15.567b8ea-ota.zip --port /dev/ttyACM0 -b 115200 --singlebank --touch 1200

Software Update

TMPDIR=/overlay/tmp/pip-tmp pip3 install meshtastic
python3 -m meshtastic --port /dev/ttyACM0 --info

Test
python3 /usr/bin/uplink.py

Config
```bash
meshtastic --port /dev/ttyACM0 \
  --set neighbor_info.transmit_over_lora false \
  --set device.role CLIENT \
  --set device.rebroadcast_mode ALL \
  --set device.node_info_broadcast_secs 10800 \
  --set-owner "Michael Torrez" \
  --set-owner-short "CUN7" \
  --set lora.region US \
  --set lora.modem_preset LONG_FAST \
  --set lora.config_ok_to_mqtt true \
  --set mqtt.enabled true \
  --set mqtt.address "mqtt.meshtastic.org" \
  --set mqtt.username "meshdev" \
  --set mqtt.password "large4cats" \
  --set mqtt.map_reporting_enabled true \
  --set mqtt.proxy_to_client_enabled false \
  --set mqtt.map_report_settings.should_report_location true \
  --set telemetry.send_node_status true \
  --set telemetry.device_update_interval 360 \
  --set neighbor_info.enabled true \
  --set neighbor_info.update_interval 14400 \
  --set external_notification.enabled false \
  --set store_forward.enabled true \
  --set position.gps_mode ENABLED
  --set position.gps_update_interval 120 \
  --set position.position_broadcast_secs 900 \
  --set position.position_broadcast_smart_enabled true \
  --set position.fixed_position false \
  --pos-fields ALTITUDE ALTITUDE_MSL DOP SATINVIEW HEADING SPEED \
  --ch-index 0 --ch-set uplink_enabled true --ch-set downlink_enabled false --ch-set psk AQ==