Connect SD card module and see content (m20 g-code)
Place firmware.bin to SD card, power on and nothing. I see previous firmware.
Same for me, sdcard on MKS mini12864.
Content is read but no upgrade...
Did you push the Boot0 button and start up? Without you can´t flash.
The best and safe way is STM32CubeProgrammer by USB
I did it with Cube flawlessly.
The Wiki didn't talk about pushing the button before with the SD card, I'll try this.