Unable to upload firmware to board. Please help me.

MMU2-dip board is not port-aware.
Created "firmware.hex" file with Visual Studio Code program
You have currently installed the CH340 driver on Windows 10.
And when I buy the board, I connect it with my computer with the cable, so the device manager recognizes the port well.

Afterwards, the CH340 port is not detected even if you download and run the flyMCU program and press the EnumPort button

I tried to download STM32flash in another way and upload firmware with the command from the CMD window, but I get a "failed to init device." error message.

Install Ubuntu with Windows 10 Hyper-v to install the CH340 driver and try to install STM32flash without USB recognition.

Is the board broken? Or is it the wrong way I install it? I'd appreciate it if you could let me know.

It may sound strange because it's translated into a translator, but please.

No repository file or test is identified. Start by reproducing the upload path described with firmware.hex, flyMCU's EnumPort action, and STM32flash, checking the CH340 connection on Windows 10; done means determining whether the board or documented flashing procedure is responsible and recording a reproducible resolution.

Written by the indexing model from the issue text.