This is an automated archive made by the Lemmit Bot.

The original was posted on /r/homeassistant by /u/bewaesserungssack on 2025-05-06 11:48:32+00:00.

🚨 ConBee III Firmware 0x26550900 is Out – Major ZHA Improvements!

Hey everyone! Just a quick heads-up that a brand new stable firmware update for the ConBee III just dropped — version 0x26550900 (released 2025-04-14) — and it’s a must-have, especially if you’re using ZHA in Home Assistant.

⚠️ Full disclosure: We are affiliated with dresden elektronik, the makers of ConBee. We’re sharing this to help the community stay current with the latest updates!

✅ What’s Improved?

This firmware focuses heavily on network responsiveness and device compatibility:

• 🔄 Improved source routing at the firmware level → faster, more reliable communication with distant or sleepy Zigbee devices.
• 🔧 Reworked joining flow → Better support for a wider range of devices, with fewer failed pairings.
• 🚀 Boosted performance across the board:
  • Larger APS and UART buffers
  • Improved UART command throughput
  • New watchdog features to ensure reliable communication

📝 TL;DR of the Changelog:

• Buffers upgraded for smoother data flow (APS + UART)
• Joining bugs fixed, especially for tricky devices
• Source routing & APS request flow tuned for performance
• Now based on Simplicity Studio SDK 2024.12.1

Here is the complete changelog.

🎥 Need Help Updating?

Check out this quick video guide on how to flash your ConBee III:

👉 Watch on YouTube

Already upgraded? Let us know your experience below — especially if you’ve noticed smoother joins or snappier performance in ZHA!