Download: avrdude -c -P -b -p m328p -U flash:r:SaveFlash.hex:i
Upload: avrdude -c -P -b -p m328p -U flash:w:SaveFlash.hex:i
Download with uno bootloader: avrdude -carduino -P -b115200 -p m328p -U flash:r:SaveFlash.hex:i
Download: avrdude -c -P -b -p m328p -U flash:r:SaveFlash.hex:i
Upload: avrdude -c -P -b -p m328p -U flash:w:SaveFlash.hex:i
Download with uno bootloader: avrdude -carduino -P -b115200 -p m328p -U flash:r:SaveFlash.hex:i