Hi everyone, I wanted to share my recent experience with the Zigbee radio stick from slaesh.sh, specifically the CC2652RB model. After a few weeks of smooth operation, I encountered an unexpected issue where the ZHA integration in Home Assistant suddenly stopped working. Despite resetting everything associated with the ZHA integration and performing a fresh reinstall of Home Assistant, the problem persisted.The logs indicated a KeyError related to the NV item NWKKEY, which suggested a problem with the non-volatile memory on the radio stick. After some research, I discovered that this error could be due to a corrupted firmware or an issue with the radio stick’s configuration. I decided to try a different approach by updating the firmware on the radio stick using the manufacturer’s tools. This process involved putting the radio stick into bootloader mode and flashing the latest firmware available from the manufacturer’s website. The process was a bit tedious, but it ultimately resolved the issue.Here’s what I learned from this experience:1. Always ensure you have the latest firmware installed on your Zigbee devices.2. If you encounter persistent errors, consider resetting the device to factory settings or reflashing the firmware.3. Keeping backups of your Home Assistant configuration is crucial for quick recovery.I’m now back up and running with my Zigbee devices, and it’s a relief to have everything working smoothly again. If anyone else is facing similar issues, I’d be happy to help troubleshoot or share more details about the firmware update process!