Hi @rtrbt, would you be able to build a patched version of brickd for Rpi5 to support older firmware version of the HATBrick? I have tried fixing it using an older version (namely Rpi3) and it couldn't connect to the HAT to update its firmware to 2.0.4. Also using brick-flash, I don't know the port so that I can try to update it that way. I tried both "/dev/ttyACM0" and "/dev/ttyUSB0"Any advice is welcome. Tanks in advance.