@Phaedrux
I successfully connected to the computer with Typec, and flashed Duet3Firmware_MB6HC.bin with Bossa

Now 6HC has a red light flashing, and YAT can send commands
But the Web Control still doesn't work
What can be done next?

@Phaedrux
I followed just the last step used the erase pin on the board to erase the firmware, the USB device ran out, but an exclamation mark was displayed https://docs.duet3d.com/en/User_manual/Troubleshooting/Duet_wont_respond

According to the official Installing and Updating Firmware, I can't grab COM with Bossa

@Phaedrux

@Phaedrux
I changed 4 typec cables and compared them with 3 computers. Both the cables and computers are good, but I still can’t connect to 6hc.

I ordered the Duet 3 Mainboard 6HC in July and encountered 4 bugs when I started using it yesterday

1. After Raspberry Pi is connected to 6HC, it will display failed to connect duet.local
2. Connected to the screen via HDMI, the display shows failed to start Duet Control Server
3. Using 6HC alone to connect Type-C to the computer, the driver cannot be found, and there is no port to read when using YAT.The device administrator can't grab any drivers or ports

I have repeatedly confirmed that the wiring and power supply are completely correct, but I still can't get any information on 6HC

Is it 6HC that is already broken? I asked the official by mail, and the official only asked me to ask the forum, and did not mention any solution at all.