This is a DFU tool to upgrade ReSpeaker Microphone Array Firmware on Mac/Linux.
git clone https://github.com/jerryyip/respeaker_micarray_dfu_mac_linux.git
cd respeaker_micarray_dfu_mac_linux
make
export DYLD_LIBRARY_PATH=$PWD:$DYLD_LIBRARY_PATH
./xmosdfu --download ReSpeaker_Mic_Array_firmware_raw_0x83_20170601.bin