avrdude-syti

1. Download most recent version of avrdude from here: https://download.savannah.gnu.org/releases/avrdude/ (the .gz.tar file) and extract it to a location which preferably isn't your Downloads folder

2. Open Microchip Studio

3. Open Tools in menu bar

4. Open External Tools in the dropdown

5. Title: Send to arduino

6. Command: PATH_TO_AVRDUDE.exe

7. Arguments: -C "PATH_TO_AVRDUDE.conf" -p atmega328p -c arduino -P COM3 -b 115200 -U flash:w:"$(ProjectDir)Debug/$(TargetName).hex":i

8. Optional: Tick Use Output Window