When the Arduino IDE is initially started, an
Arduino folder is created in your Windows
Documents folder. This is where the sketches (programs such as our firmware) are stored. Make sure your downloaded firmware is unzipped in a folder and stored here.
From the Arduino IDE menu, select Files and then Sketches. The list of firmware that you have stored in the
Arduino folder becomes accessible. If the firmware doesn't appear, try restarting the Arduino IDE.