No USB connection to Duet 3 MB6HC

gringo

Hello everyone,
I need some help. I cannot connect to the Duet3 MB6HC via USB.
I wanted to update the firmware to 3.4.1 but that didn't work and I canceled the process.
The following message appears: USB device was not recognized.
What can I do?

Thanks for helping me.

jumpedwithbothfeet

@gringo where you able to connect previously? or is this the first time you have used the board? try running through this -
https://docs.duet3d.com/en/How_to_guides/Getting_connected/Getting_connected_to_your_Duet

gringo

That’s exactly what I’ve done.
No connection to the Board via USB and no communication with YAT.
Same Problems at another PC. There the Board is not recognized.

This device has stopped because it was reporting errors. (code 43)

A request for the USB device descriptor failed.

Phaedrux

Please go through this guide

https://docs.duet3d.com/en/User_manual/Troubleshooting/Duet_wont_respond

Do you have a USB hub you can connect through?

What firmware were you running before? Is this a new board or was it already running in a printer?

gringo

Thanks Phaedrux,

I tried that. Here are the USB devices that are displayed when the Board is connected.

There is no Duet Board.

The Board was new. Installed was 3.3.
I wanted to update to 3.4.1 but the Board hung and stopped responding. Then I unplugged it. It hasn't been recognized since then.

Any other Ideas?

jay_s_uk

@gringo look under Ports (com & LPT) rather than USB

gringo

There is only the BOSSA Port

jay_s_uk

@gringo in which case you need to flash the firmware using BOSSA.
Use the duet version https://github.com/Duet3D/BOSSA

gringo

I do not have access to the board and therefore cannot access it with BOSSA. Or am I misunderstanding something here?
If no board is displayed in the Device Manager, I can't access it either ??

jay_s_uk

@gringo you said its displayed as a BOSSA port under Ports (com & LPT), therefore you can access it

engikeneer

@gringo when a Duet board doesn't have any firmware flashed, it appears as a Bossa port when connected to your PC. Looks like in updating your firmware was erased, so you'll have to reflash is from scratch using BOSSA.
It sounds a little scary, but is actually very easy!

gringo

Thanks for your help, the Board is running again. I first tried to flash the complete .zip file via BOSSA. Of course it does not work . After flashing the .bin I had to install the USB drivers.
After that I had no access with YAT. Pronterface then worked and I could set up the Network.

Thanks to all.