Burning the bootloader via ISP (advanced)

This is for advanced users who want to burn the bootloader with an external ISP directly. You can do this with your program if choice (e.g. avr-dude) or use the Arduino IDE and select the correct MCU, board, bootloader, programmer and hit "burn bootloader".

You can either use any official ISP or let your Arduino Uno/Mega/Leonardo/Micro/16u2 act as ISP.

HoodLoader2 Fuses:
low_fuses=0xFF
high_fuses=0xD8
extended_fuses=0xFC
unlock_bits=0x3F
lock_bits=0x2F


Official DFU + USB-Serial Fuses:
low_fuses=0xEF
high_fuses=0xD9
extended_fuses=0xF4
unlock_bits=0x3F
lock_bits=0xCF