Release notes · Jul 04, 2026 · 1 min read
SLZB-OS v3.3.3.dev4
Developer-channel build: firmware update channel selection, EFR32 NVM-clear option, stable-only auto-updates, plus DNS/OTA/Zigbee Hub fixes.
Improvements
- Added the ability to select a firmware update channel on the Firmware update page. After selecting, you will only see firmware of the selected channel in the coordinator interface. As of now this only applies to the coordinator interface (in Home Assistant you can still see notifications about firmware of another channel).
- For coordinators with EFR32 radio modules, an option to clear NVM has been added to the firmware update dialog. Enabled by default to prevent problems when migrating between firmwares; you can uncheck it to keep NVM.
- Automatic updates will now only use stable Zigbee firmware.
Fixes
- Fixed an issue where empty DNS could be assigned in some cases.
- Fixed automatic OTA baudrate update issues.
- Fixed IEEE read/write functionality for firmware
20260416of the EFR32 radio module.
Zigbee Hub
- Fixed discovery payload for the illuminance cluster.
- Minor improvements to electric valve support.
- Fixed handling of custom MQTT commands for cluster ON/OFF.