ESP-Coordinator (ZBOSS NCP)
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Hardware: ESP32-C6
Purpose: Zigbee Coordinator firmware for Z2M
Source: GitHub Repository
Hardware: ESP32-C6
Purpose: Zigbee Coordinator firmware for Z2M
Source: GitHub Repository
Information:
This tool flashes the latest factory firmware (version shown above) directly via your browser onto your ESP32-C6.
The process automatically verifies that the connected device is an ESP32-C6.
Release notes
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1. Connect your device via USB
Click the button below, select your serial port (e.g., USB JTAG/serial debug unit) and start the flash process.
Supported browsers: Chrome, Edge, Opera. (Safari/Firefox do not fully support WebSerial yet).
2. Zigbee2MQTT (Z2M) Setup
Once flashing is complete, the coordinator can be integrated into Zigbee2MQTT.
Adjust your configuration.yaml (located at `zigbee2mqtt/data/`) as follows:
serial: # Replace this path with your actual USB path port: /dev/serial/by-id/usb-Espressif_USB_JTAG_serial_debug_unit_... # Mandatory for the ESP32 ZBOSS firmware: adapter: zboss advanced: # Transmit Power - Optional transmit_power: 20
Optional: matching Docker image. For seamless coordinator backup/restore (the same NVRAM image used by the Backup/Restore buttons in section 3 below), there is a community-maintained Z2M image that ships the ZBOSS-NCP extensions pre-applied:
image: ghcr.io/tostmann/zigbee2mqtt-esp32:latestThe standard
koenkk/zigbee2mqtt image works perfectly fine too — you just won't get the raw-NVRAM blob captured into coordinator_backup.json. See ZIGBEE2MQTT.md for details.
Important Notes:
• The firmware is optimized for maximum stability using the ZBOSS protocol.
• If Z2M reports "Port is busy" during startup, ensure no other services (like ModemManager) are blocking the port.
• Zigbee2MQTT is the recommended host stack. Home Assistant ZHA is experimental — see the GitHub README for current status.
• The firmware is optimized for maximum stability using the ZBOSS protocol.
• If Z2M reports "Port is busy" during startup, ensure no other services (like ModemManager) are blocking the port.
• Zigbee2MQTT is the recommended host stack. Home Assistant ZHA is experimental — see the GitHub README for current status.
3. Coordinator (already flashed) — Identify, Backup, Restore
For a stick that already has the firmware: connect via USB and click Identify to read the live network state, firmware version, IEEE address and paired-device count. Below, you can then back up the network as a Z2M-compatible coordinator_backup.json, restore from one, or — if the firmware is outdated or the chip is factory-fresh — flash the latest firmware.
Firmware
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NCP
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Stack / Protocol
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IEEE
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Role
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Network
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PAN ID
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Ext PAN ID
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Channel
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Paired devices
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Frame counter
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⚠️ Stale snapshots can trigger replay-protection rejection on individual end-devices if their on-air frame counter has advanced past the captured value. Take a fresh backup before any hardware migration.