diff --git a/zigbee2mqtt/README.md b/zigbee2mqtt/README.md
index 0f182aa..0bae5e4 100644
--- a/zigbee2mqtt/README.md
+++ b/zigbee2mqtt/README.md
@@ -1,2 +1,35 @@
 zigbee2mqtt
 ===========
+
+[Zigbee2MQTT][1] allows you to use your Zigbee devices without the vendor's bridge or gateway.
+
+## Firmware Upgrade
+
+[Zigbee 3.0 CC2652P Dongle Plus][2]
+
+```bash
+# download latest zigbee firmware
+wget https://github.com/Koenkk/Z-Stack-firmware/raw/master/coordinator/Z-Stack_3.x.0/bin/CC1352P2_CC2652P_launchpad_coordinator_20230507.zip
+unzip CC1352P2_CC2652P_launchpad_coordinator_20230507.zip
+ls CC1352P2_CC2652P_launchpad_coordinator_20230507.hex
+
+# download firmware flashing tool
+sudo apt install -y python3-serial python3-intelhex
+wget https://github.com/JelmerT/cc2538-bsl/raw/master/cc2538-bsl.py
+chmod +x cc2538-bsl.py
+./cc2538-bsl.py --help
+
+ls /dev/ttyUSB*
+udevadm info -q property -n /dev/ttyUSB0 --property=ID_MODEL
+./cc2538-bsl.py --bootloader-sonoff-usb -p /dev/ttyUSB0 -evw CC1352P2_CC2652P_launchpad_coordinator_20230507.hex
+```
+
+## Up and Running
+
+```bash
+$ docker compose up -d
+$ curl 127.0.0.1:8080
+```
+
+[1]: https://github.com/Koenkk/zigbee2mqtt
+[2]: https://zigbee.blakadder.com/Sonoff_ZBDongle-P.html