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Estlcam arduino mega 256010/16/2023 To update the USB-to-Serial firmware for a board that showed up as Atmega8U2/ATmega16u2 DFU such that it can show up properly as Arduino UNO or Mega 2560 when connected to a computer, take the steps below: 1. Previous versions of the Uno and Mega2560 boards had an Atmega8U2 which runs a software (firmware) that can also be updated through a special USB protocol called DFU (Device Firmware Update). The ATmega16U2 chip acts as a bridge between the computer's USB port and the board's main processor's serial port. ![]() ![]() Arduino UNO or Mega 2560 being recognized as Atmega8U2 or ATmega16u2 DFU by the computer is a result of missing USB-to-Serial firmware.
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