cannot flash on maixpy go

[linycm]

I cannot flash firmware to maixpy go as below. So how to resovle?
./ktool.py -p /dev/ttyUSB0 -b 2000000 -t MicroPython.bin

[kulichs]

kflash -p /dev/ttyUSB0 MicroPython.bin

[nogleo]

I tried ./ktool.py ./kflash.py kflash
nothing works on the Maixduino...

update kflash_gui works