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Changelog SLZB-OS

🚀 SLZB-OS v3.2.0 - Release Notes

We’re happy to announce the release 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.

✨ Highlights

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

    🆕 New Features

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

        📡 Zigbee Hub Improvements

          ✅ Zigbee Hub now includes a Reset option if startup fails ✅ Zigbee Hub 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 U series

          🔌 USB & Passthrough

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

            🌐 Wi‑Fi & Network

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

              ⚙️ OTA & System Stability

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

                🛠️ 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 separate Zigbee OTA firmware

                   

                  SLZB-OS v3.0.9

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

                  ⚠️ 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 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

                  📡 Zigbee Hub Improvements

                  • ✅ Redesigned Zigbee Hub network startup - now significantly faster
                  • ✅ Hub now responds to Time attribute 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 sendTuyaData()
                  • 🛠 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 smlight.tech/flasher, select your model, and follow the flashing instructions.