Release notes · Jun 06, 2026 · 2 min read
SLZB-OS v3.3.3.dev1
Improvements
- Experimental support for SLZB-OS configuration backup/restore.
- Optimized the processing speed of SSE messages.
- Added a button to copy the device log.
- Added autocomplete for the TIMER module.
- SUN module redesigned — documentation.
- OTBR on device moves from experimental to beta.
- U-series coordinators now store a 12× larger device log in PSRAM (50KB vs 4KB).
- (SLZB-Ultima) New "Audio" page and MP3 audio player support.
- (SLZB-Ultima) Added new Berry audio player module — documentation.
- (SLZB-Ultima) Added optional argument for number of repetitions when sending an IR command for the Berry IR module — documentation.
- (SLZB-Ultima) Improved stability of the Z-Wave addon.
- (SLZB-Ultima) Improved 4G modem processing.
- (SLZB-Ultima) The IR receiver is disabled while the transmitter is active.
- Added a 10s timeout for OTBR startup — if the radio module still does not respond you will see an error on the OTBR page.
Fixes
- Fixed an OS crash that caused OTBR in some cases.
- Fixed ZigBee network scanning not working if OTBR is running on radio module 2.
- Fixed DNS issues for NAPT bridge mode.
- Fixed SPAM in device log when using the SMLIGHT SLZB integration.
Zigbee Hub
- Added experimental ZigBee Hub backup functionality.
- Added missing subscriptions to new zHub control topics (attribute read request, system_control).
- When creating a new random network, only channels 11, 15, 25 will be used.
- Automatic firmware updates of the radio module are disabled if the Zigbee Hub is active.
- Fixed a ZigBee network start error reported when the network was actually started.
- Fixed issues with network key comparison.
- Fixed broken Zigbee button triggers.