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Revision to What to do if your Duet won't respond

David Crocker

 
* If the LEDs are correctly lit, go to your PC and see whether a new COM port appeared when you plugged in the USB cable. Under Windows you do this by loading Device Manager, then expand '''Ports - COM and LPT'''.
* If a port called '''Duet 3D Printer Electronics''' is shown, then you should be able to connect to your Duet using Pronterface, Arduino Serial MonitorYAT, Pronterface or another host program or terminal emulator program. Proceed to update the main firmware or the WiFi firmware if you need to.
* If a port called '''Duet 3D Printer Electronics''' is shown, then you should be able to connect to your Duet using Pronterface, Arduino Serial MonitorYAT, Pronterface or another host program or terminal emulator program. Proceed to update the main firmware or the WiFi firmware if you need to.
* If a port called '''Bossa port''' is shown then the firmware has been erased. Perhaps you pressed the Erase button. You need to re-install firmware via USB. How to do this for the Duet 2 Wifi is described in section "Fall-back procedure #3" in [[Installing and Updating Firmware]].
* If an '''Unknown Device''' is shown (but only when the Duet is connected) and you are running Windows, install the Windows device driver for the Duet.

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