I do suspect that if one tried to flash new or altered. hex file with betaflight - i was able to press DFU button on the kakute board and it went into the DFU mode with no issues and i just flashed back betaflight into it. do not want to do more tests on it for now, but - as i have flashed in an arducopter.
Ok, and now i think i have quite an interesting empirical evidence.
