Flashing: MacOS - kad/Marlin GitHub Wiki

Recent versions of MacOS X already include needed CH340 USB Serial drivers. If for some reason you MacOS X version doesn't have those, you will need to install CH340 USB Serial drivers.
- CH340 MacOS X vendor driver available from here
Install avrdude:
```
brew install avrdude
```
Using avrdude:
```
avrdude -v -p atmega1284p -c arduino -b 115200 -D -P /dev/cu.usbserial -U flash:w:Anycubic-Mega-Zero-firmware.hex:i
```
Notes:
- Replace /dev/cu.usbserial with your actual name of USB-Serial port where printer is attached
- Replace Anycubic-Mega-Zero-firmware.hex if you have different firmware filename