For Arduino Uno Board Atmega16u2 USB chip, I can not enter into programming mode by using Atmel Studio 7.0 through AVR ICE device.
Please see a note reported years ago below https://www.avrfreaks.net/comment/2968081#comment-2968081 Which insanely crazy to believe.
Error Message : Atmega16u2 bootloader update is not working. I am getting 0xC0 value instead of 0x00 expected. Off the shelf arduino uno board can not get into programmer mode. Any suggestion?
Thanks and best regards,