Bootloader upload / fix If the Arduino Micro Pro isn’t working/detected by your OS anymore, you have to fix the bootloader. To do this you can use an USBASP device. Wiring Signal USBASP Arduino Micro Pro MOSI 1 D16 VCC 2 VCC RESET 5 RST SCK 7 D15 MISO 9 D14 GND 10 […]