@echo off
SET port=%1%
C:\AVRdude\avrdude.exe -patmega32u4 -cavr109 -PCOM%port% -b1200 -n
SET /a port=%port%-1
ping -n 2 127.0.0.1 > NUL
C:\AVRdude\avrdude.exe -patmega32u4 -cavr109 -PCOM%port% -b57600 -D -Uflash:w:%2%:i