user43808: I have an Anduino Uno R1 and the ATmega8U2 on. It does not respond correctly. How can I use another Arduino Uno R3 in order to reinstall the correct firmware? What I want to avoid it to solder the resistor because I am not very good with the soldering iron.
As fas as I understand there are some pins close to the AREF pin that can be used in order to attach a programmer. Also how can I temporally attach them without the need of a soldering iron? On the R1 the pins are just some exposed metal. How can I connect to them?
Also, if I load into the other Arduino the programmer, then how can I load the firmware using GNU/Linux into the ATmega8U2?


user1576: There is an official guide. Arduino as ISP and Arduino Bootloaders
But you need to add the 2x3 ISP pin header since some of the signals isn't available on D0-D13 or any other pins.

43808: <p>I have an Anduino Uno R1 and the ATmega8U2 on. It does not respond correctly. How can I use another Arduino Uno R3 in order to reinstall the correct firmware? What I want to avoid it to solder the resistor because I am not very good with the soldering iron.</p>

<p>As fas as I understand there are some pins close to the AREF pin that can be used in order to attach a programmer. Also how can I temporally attach them without the need of a soldering iron? On the R1 the pins are just some exposed metal. How can I connect to them?</p>

<p>Also, if I load into the other Arduino the programmer, then how can I load the firmware using GNU/Linux into the ATmega8U2?</p>

<p><a href="https://i.stack.imgur.com/NjHBQ.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NjHBQ.jpg" alt="enter image description here"></a></p>
 1576: <p>There is an official guide. <a href="https://www.arduino.cc/en/tutorial/arduinoISP" rel="nofollow noreferrer">Arduino as ISP and Arduino Bootloaders</a></p>

<p>But you need to add the 2x3 ISP pin header since some of the signals isn't available on D0-D13 or any other pins.</p>
