bemanitools/doc/tools/ezusb-iidx-fpga-flash.md

Flash a binary FPGA binary (not hex) firmware image to the FPGA of a EZUSB board. This assumes that your IO board is already flashed using a base firmware image (either by the game itself or using the ezusb-tool application). Just call the executable and follow the usage instructions. The type v1 refers to the first gen protocol used from iidx 9 to 13 and v2 to the second gen protocol used from iidx 14 onwards.