Changelog SLZB-OS

📦  v3.3.3.dev1 - Release Notes

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 TIMER module SUN module redesigned documentation OTBR on device moves from experimental to beta U-series coordinators now store 12x 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 for sending IR command for berry IR module documentation (SLZB-Ultima) Improved stability of Z-Wave addon (SLZB-Ultima) Improved 4G modem processing (SLZB-Ultima) The IR receiver will be disabled while transmitter active Added 10s timeout for OTBR startup. If after that 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 SMLIGHT SLZB integration

Zigbee Hub

Added experimental ZigBee Hub backup functionality Added missing subscriptions to new zHub control topics. Now new topics will work (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 will be disabled if the Zigbee Hub is active Fixed an issue that caused a ZigBee network start error when the network was actually started Fixed issues with network key comparing Fixed broken Zigbee buttons triggers

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📦 v3.3.1  - Release Notes

Improvements

• OS will now reboot the EFR32 radios at startup

Fixes

• Fixed broken static IP config for Trasparent WiFi bridge mode

Zigbee Hub

• Added attribute read request for MQTT API:  documentation
• Added new system_control MQTT API:  documentation
• Added test converter for "Moes ZS-EUB_2gang"

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📦 SLZB-OS 3.2.9 - Release Notes

Fixes

Zigbee Hub

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📦 SLZB-OS 3.2.8 - Release Notes

Highlights

Improvements

Fixes

Zigbee Hub

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📦 SLZB-OS 3.2.7 - Release Notes

Highlights

• Integrated Integrated 30+ services services for local automatiations, including including WLED, Telegram, Weather, Slack, Wake-on-Lan, MS Teams, E-mail, OpenWRT, and more.
• AI is here:  Added AI Assistant to help users write automation scripts more easily. in Beta test.  Requires AI credentials (so far - Anthropic only).  Watch the quick 4-minute YouTube overview overview .
• SLZB-xU devices  can now try a new new experimental mode  with native native OTBR app  running directly on the SLZB-xU device.  Mode is still experimental, and there is reported bug in some installations - the coordinator may become unavailable after some time. Pattern is unknown, that is why still experimental status.

Improvements

• Moved Ethernet processing to to Core 0  for better load balancing.
• Optimized the the scripts virtual machine  for better performance.
• For For U devices, the the BT Proxy  option now links directly to the activation manual.
• IPv6 has been temporarily disabled for rework.
• All localizations except except EN  have been moved to a cloud server to reduce firmware size. On first opening the coordinator interface, the localization will load in the browser if internet access is available. Without internet access,  EN  will be used.

Fixes

• Fixed metadata overflow crashes for older older .gbl  update files.
• MRW10/10U  now use the the Z-Wave packet parser, improving socket stability.
• Fixed a crash in the the hard reset handler.

Zigbee Hub

• Replaced the the LQI  unit with with "none".
• Fixed logging of values for for Tuya DP.
• MQTT now sends correct values even for unsupported devices, allowing them to be used in automations.
• Added support for new Zigbee devices.

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📦 SLZB-OS 3.2.6.dev3 - Release Notes (dev)

🛠️ Improvements

• SLZB-MRW10 and MRW10U: rewritten socket handling for ZWave to improve stability
• Add Window Covering cluster (0x0102) support to Zigbee Hub mode
• Add Occupancy Sensing cluster (0x0406) support to Zigbee Hub mode
• Added speed 2400 for USB page
• Updated localizations
• Updated datapoint /ha_sensors
• Added presets for the SLZB-Ultima3 buzzer

🐛 Fixes

• ✅ Fixed logging and sending Tuya DP data for Zigbee Hub mode
• ✅ Fixed running multiple berry scripts
• ✅ Fixed Wireguard (which was broken in a previous build)

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📦 SLZB-OS 3.2.6.dev2 - Release Notes (dev)

✨ Thread + OTBR running on the device - update

Many users have asked for the ability to set TLVs for this mode via SLZB-OS and now you can do this on on /otbr  page!

🛠️ Improvements

• New Ambilight effects for for SLZB-Ultima3
• New Berry modules and integrations (documentation)

🐛 Fixes

• ✅ Fixed Zigbee automatic update ignores speed change in new firmware
• ✅ Fixed a crash in Berry error handler

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📦 SLZB-OS 3.2.6.dev0 - Release Notes (dev)

✨ New: Thread + OTBR running on the device (SLZB-xU only) - evaluation/beta mode.

You can now run run OpenThread Border Router (OTBR)  directly on the SLZB device, instead of running the OTBR add-on/app in Home Assistant.

✅ Why this could be a no-brainer:

• Home Assistant connects to OTBR via via network REST API, so you no longer rely on the the Serial-over-IP  link used in in “Thread to external OTBR”  mode.
• This aims to improve reliability of Thread connectivity between Home Assistant and SLZB devices fpr those, who experiences issues with connectivity.

🏠 Home Assistant setup:

• OTBR REST API is available at at http://device-ip:8080

⚠️ Important notes / limitations:

• 🧪 Initial (beta) integration  — may have limitations or unexpected behavior.
• 🌐 IPv6 is required  and will be be force-enabled  when this mode is activated.
• 🧠  "Thread + OTBR running on the device" mode can't work with with "router (standard)" mode for Ethernet ↔ WiFi bridge and  and Zigbee Hub mode. To activate back these features, device mode should be othar than "Thread + OTBR running on the device".
• "Transparent" mode for WiFi ↔ Ethernet bridge  is incompatible with "Thread + OTBR running on the device". If you need "Transparent" mode for WiFi ↔ Ethernet bridge - please use any of the previous versions of the SLZB-OS.
• 🔒 Availability:  only on on SLZB-xU series.
• 🔁 Alternative:  you can still use use Thread + remote OTBR  mode (USB/Ethernet) if you prefer OTBR running elsewhere.

🛠️ Improvements

• ⏱️ Added uptime info for for Socket2 and  and Socket3 in  in /ha_sensors

🐛 Fixes

• ✅ Fixed a crash in in Zigbee Hub mode when a received value is larger than expected

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🚀 SLZB-OS v3.2.5.dev1 - Release Notes

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✨  New Features & Enhancements

• ✅ Zigbee Hub mode: support for Tuya datapoint data writes.
  !BREACKING CHANGE!  Changed the format of the write topic Zigbee Hub for Tuya Tuya Zigbee Hub MQTT API
• ✅ Zigbee Hub mode: Added support for MOES Star Feather (2-key models)
• ✅ Berry: New BUZZER module for Ultima3 Ultima3 documentation
• ✅ Berry: New BUTTON module module documentation
• ✅ Increased the web server authentication password limit length from 63 to 64 characters

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🐞  Fixes & Improvements

• 🐞 Fixed corrupted date/time in time settings
• 🐞 Fixed script list reload on error
• 🐞 Fixed crash when parsing metadata in .gbl files
• 🐞 Fixed random ISR crash on startup
• 🐞 Fixed wrong baudrate for CC26XX radio after factory IEEE read
• 🐞 fixed EFR32 custom firmware flashing issues
• 🐞 Fixed LTE addon start on Ultima3
• 🐞 Fixed Blue LED logic on Ultima3
• 🐞 Fixed AP delay if SSID and password are empty
• 🐞 Fixed memory leak in usb_list API
• 🐞 Fixed web server lockup when option "Disable web server when socket is connected" is active

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🚀  SLZB-OS v3.2.4 - Release Notes

The latest version of of SLZB-OS (v3.2.4)  brings improvements to MQTT integration, internal scripting (automations), Zigbee diagnostics, and overall system stability.

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✨  New Features & Enhancements

• ✅ Added Added MQTT module  support for scripts, so internal automations can send/receive MQTT messages -  View usage examples
• ✅ Introduced Introduced MQTT API support for SLZB-Ultima  - control IR receiver, Transmitter, Buzzer, WS2812 via MQTT (alongside with HTTP control method) -  Read MQTT API docs
• ✅  MQTT can now be activated independently  of Zigbee Hub
• ✅ Pinned socket tasks to to dedicated core  for improved performance
• ✅ Zigbee channel scanning added for for MR devices  (on Z2M/ZHA page)
• ✅ Display of of USB mode  added for non-U series devices
• ✅ IEEE-related controls disabled for for Thread or  or Zigbee Router  firmware
• ✅ Added Added SSE module  for internal scripting

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🐞  Fixes & Improvements

• 🐞 Fixed possible possible web server overflows  during reboot waits
• 🐞 Fixed MQTT discovery crashes in in Zigbee Hub  mode
• 🐞 Optimized overall overall web server performance
• 🐞 Fixed incorrect incorrect baudrate info  for radio3 on Ultima
• 🐞 Fixed Fixed syslog-related crashes
• 🐞 Hidden socket statuses for for USB mode on U devices
• 🐞 Fixed incorrect display of of Z-W addon info  on Ultima
• 🐞 Tuned Tuned serial settings  for improved communication
• 🐞 Fixed Fixed router reconnect  issue on MR4
• 🐞 Fixed incorrect baudrate / crash during during .gbl metadata parsing
• 🐞 Fixed Fixed radio module OTA updates  in USB mode (U series)
• 🐞 Fixed Fixed IEEE read issue  for MR1U
• 🐞 Fixed Fixed bs-target display issue  in addons accordion
• 🐞 Fixed Fixed socket time/status reporting

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🚀 SLZB-OS v3.2.0 - Release Notes

We’re happy to announce the release of of SLZB-OS v3.2.0  - a stability-focused update with new device support, major improvements for U-series USB functionality, and multiple Zigbee Hub reliability enhancements.

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✨  Highlights

• ✅  FULL support of SLZB-Ultima added  -  SLZB‑Ultima
• ✅ Improved Improved USB capabilities for U series  (new alternative driver)
• ✅ Better stability during during OTA updates and  and Zigbee Hub operation
• ✅ Updated dashboard layout

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🆕  New Features

• ✅ Added Added Full support for the new SLZB-Ultima device  -  Learn more
• ✅ New New alternative USB driver  can be selected on the the "USB"  page (U series)
  • Provides advanced USB capabilities
• ✅ USB passthrough now supports supports 1200 baud

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📡  Zigbee Hub Improvements

• ✅ Zigbee Hub now includes a a Reset option  if startup fails
• ✅ Zigbee Hub now now stops automatically  when an OTA update is in progress
• ✅ Added missing Zigbee Hub device configurations after reboot
• ✅ Added Zigbee Hub reset option for recovery when startup fails
• ✅ Fixed a Zigbee Hub crash that could occur in some situations on the the U series

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🔌  USB & Passthrough

• ✅ Added selectable selectable new alternative USB driver  on the USB settings page (U series)
• ✅ USB passthrough now supports supports 1200 baud
• ✅ Zigbee OTA now working in in USB mode  on U series devices

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🌐  Wi‑Fi & Network

• ✅ Wi‑Fi connection now checks checks hidden SSIDs  when connecting
• ✅ Fixed rare crash when using Wi‑Fi in some cases

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⚙️ ️ OTA & System Stability

• ✅ Reboot confirmation modal is now shown shown only when reboot is actually required
• ✅ Dashboard layout updated for improved usability
• ✅ Fixed WDT (watchdog timer) triggering during OTA updates in some cases

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🛠️ ️ Other Fixes and Improvements

• ✅ Fixed Berry VM manager free logic
• ✅ Fixed language cache issues
• ✅ Fixed MR3U EFR32 bootloader issues
• ✅ Fixed wrong IEEE writes after reboot for CC radio modules
• ✅ SLZB‑06Mg26U now uses a a separate Zigbee OTA firmware

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SLZB-OS v3.0.9

We’re excited to release release SLZB-OS v3.0.9, bringing major improvements to to Zigbee Hub,  Thread, and and network stability, along with performance boosts, script engine fixes, and a few critical updates.

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⚠️ ️ BREAKING CHANGES - ONLY FOR ZIGBEE HUB MODE USERS - NO EFFECT ON ZIGBEE2MQTT OR ZHA USERS!!!

If you use device as Zigbee coordinator (with Zigbee2MQTT or ZHA) / Thread router - it does not affect you. Again, this change is only for those who use device in a Zigbee Hub Mode.

• ❗ Zigbee Hub Users:  All Zigbee devices must be be re-paired  after this update due to core changes in the Zigbee stack and API.
• ❗ MQTT Broker Format Changed:
  • Old format: 'mqtt://example.com'
  • New format: 'example.com' (or, IP format: '127.0.0.1')

  You can now use DNS and DDNS hostnames for your MQTT broker.

• 📘 Updated MQTT API for Zigbee Hub:  View the new MQTT API documentation

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📡  Zigbee Hub Improvements

• ✅ Redesigned Zigbee Hub network startup - now significantly faster
• ✅ Hub now responds to to Time attribute and  and Identify queries
• 🐞 Fixed: Some Zigbee devices not sending reports in Hub mode
• 🐞 Fixed: Zigbee Hub mistakenly available for EFR32 on MRx devices

🌐  MQTT & DDNS Enhancements

• ✅ MQTT Broker now accepts plain domain names, not only IP addresses
• ✅ "IP Provider" setting for DDNS is now optional
• 🐞 Fixed DDNS update interval and max value behavior
• 🐞 Fixed excessive DNS requests from NTP client

⚡  Performance & System Stability

• 🔧 Increased socket task priority for better responsiveness
• 🔧 Moved secondary tasks on U series to PSRAM for improved memory usage
• 🔧 Improved Thread stability for U series devices
• 🔧 Enhanced EFR32x bootloader activation routine
• 🔧 Improved USB power switch logic on U series
• 🐞 Fixed second radio status display in web interface header

🧩 Berry Script Engine (zHub)

• 🛠 Improved support for for sendTuyaData()
• 🛠 Fixed Fixed readAttr()  not returning correct values

🌍  Localization

• 📘 Updated and improved UI translations across supported languages

💡  How to Update SLZB‑OS

You can update your coordinator using one of the following methods:

• 🔄 OTA Update (Recommended):
  Open the SLZB Web UI →  Settings and Tools → Firmware updates → Check for updates (SLZB-OS)
• 🔌 USB Update (Manual Flash):
  Go to to smlight.tech/flasher, select your model, and follow the flashing instructions.