Does pressing the button for 10 seconds recover it to factory default? If not, you may have to send it back to us for reflashing firmware through USB. I don’t think the chip is bricked — the bootloader is very robust that unless if the chip is physically damaged it’s almost not possible to brick it. The only thing is that the current version of OpenGarage no longer has built-in USB-serial chip, so if for whatever reason the OTA update doesn’t work, you will need to send it back to us as we have a special programmer to plug into the board to program it. You can also use your own USB-serial cable/adapter but it requires a bit of soldering.