Hi!
I am trying to flash a new bootloader to my Arduino Pro Micro board (MEGA32U4-MU).
But avrdude tells me that it does not know the chip's signature. 
avrdude.exe: Device signature = 0x3c0202
avrdude.exe: Expected signature for ATmega32U4 is 1E 95 87
I did not find anything about this device signature.
How can I reflash the bootloader to my MEGA32U4?