BZdevice
Experimental firmware for devices on the TLSR825x chip operating simultaneously in Zigbee 3 and Bluetooth LE.
- Custom firmware
- Alpha
- High brick risk
This project hasn't been claimed by its maintainer yet, so its details come from the community. Is it yours? Claim it
Before you start
- How hard is it?
- EasyCopy a file or use a web page. No extra software.
- What you need
- A USB or MIDI cable
- A computer
- Can it break my device?
- Could leave your device unusable.
- Can I undo it?
- The project doesn't say. Assume you can't.
Did it work for you?
Did BZdevice v0.2.0.9 work on your Xiaomi LYWSD03MMC?
No reports yet for v0.2.0.9.
One-tap reports from owners. Bricked reports are checked before they count.
Compatibility
Devices: Xiaomi LYWSD03MMC.
No compatibility information yet.
Getting started
From the project's README ("BLE OTA"):
For those not afraid to experiment:
The firmware is carried out from the BLE version by downloading a .zigbee or .bin file in TelinkMiFlasher.html. In the file name input field, paste https://github.com/pvvx/BZdevice/raw/master/bin/1141-020a-02053001-Z03MMC.zigbee (for LYWSD03MMC) For BLE OTA, when this version is already working, TelinkOTA.html is used.
Risk and recovery
- Brick risk
- High
From the project's README ("Zigbee OTA"):
OTA update in ZHA
Before flashing the firmware, check the compliance of the “Manufacturer Code” and “Image Type” between the OTA file and those issued by the Zigbee device.
Sample: "1141-020a-01103001-Z03MMC.zigbee"
Manufacturer Code Image Type File Version Stack Version Name Ext OTA 1141 020a 0110 3001 Z03MMC zigbee 0x1141 - Telink 0x02 - TLSR825x, 0x0a - Xiaomi LYWSD03MMC App release 0.1, App build 1.0 Zigbee v3.0, Release 0.1 Z03MMC OTA
Image Type Device, note 0x0201 MHO-C401 (old version) 0x0202 CGG1 (old version) 0x0203 LYWSD03MMC ver https://github.com/devbis/z03mmc 0x0204 WATERMETER ver https://github.com/slacky1965/watermeterzed 0x0206 CGDK2 0x0207 CGG1 (new version) 0x0208 MHO-C401 (new version) 0x0209 MJWSD05MMC 0x020A LYWSD03MMC 0x020B MHO-C122 0x0210 TB-03F-Kit (DIY) 0x0211 TS0201-TZ3000 0x0212 Water Tank sensors (not published) 0x0216 TH03Z To restore to BLE, use the Zigbee OTA file with the same number device from: https://github.com/pvvx/ATCMiThermometer/tree/master/zigbeeota
Releases
| Version | Name | Released |
|---|---|---|
| v0.2.0.9 | —Latest | 18 March 2026 |
| v0.2.0.5 | — | 25 April 2024 |