open marlin, if it’s compressed file,must unzip it.
find the icon green color,this format is “ino”, click and open it in arduino.
2.settings
Firmware could only be upload succeed when the settings like the above Go to
tools > board >arduino mega 2560
Go to tools > port, select the COM port Go to tools
> programmers > USBtinyISP
Click the 上传(Upload) button to upload the Marlin Firmware Sketch to MKS Controller Board.
Once upload successful, message “Done”.