1 Once connected, navigate to the g-code console. Ensure you tell the system to detect your SD card by typing the M21 command

2 Enter M997 S0:1 as shown in the pic. This command updates the firmware on the Duet control board. Be patient and do not power off the machine until finished.

3 Click Send and wait for a minute or two.

The DUET board "looks" for a .bin file (downloaded), compares it for new status and updates the firmware on the micro controller automatically. When finished, you will be able to connect with the browser as usual. The DUET firmware update will delete the .bin file from the micro SD card when it is finished updating.