Hi After struggling for some time to try to get linux STM32flash to program the Cheetah board, on linux Mint. I found hundreds of complaints on many fora about the problems that some linux kernel drivers for the CH340 / CH341 still have.
Nobody seems to have really fixed the problem and there are xo many "fixes" ourt there that it has become incredibly hard to find the true gold fix, All fixes seem to involve compiling and installing a new linux kernel driver.
I eventually bit the bullet and dug out of my junk pil an old MD box, d/l the Fysetc flasher and successfully flashed the board.
cheers
Patrick