Hi, I have this Wirebridge zigbee usb stick https://www.wirebridge.co.uk/mg21usb.
I had flashed it with the firmware from silabs-firmware/EmberZNet at main · NabuCasa/silabs-firmware · GitHub and it was working great. There was an updated firmware available, so I thought I would updated using the web flasher. I picked the wrong version and now the stick is no longer detected. I guess i need to reinstall the correct firmware, or maybe even the bootloader.
The Wirebridge stick does seem to have some connection points (GND, RXA, TXA) which could be for a serial connection.
I have a raspberry Pi, and was hoping I could hook that up via serial uart to the stick, and put the stick into a mode where I can download new firmware to it.
Grateful for any help. Thanks.