[fysetc AIO II] I succeed to upload a firmware using stm32flash on my ubuntu machine. I guess cheetah is similar with AIO II.
it's very easy to download now. I just installed stm32flash.
no need install any device driver for usb.
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
$ sudo apt-get install stm32flash
$ stm32flash -w firmware.hex -v -i rts,-dtr,dtr /dev/ttyUSB0 -R
rts,-dtr,dtr option is important.
enjoy uploading with linux machine~