hello. I used the following chip.
STM32F103C6
https://www.youtube.com/watch?v=fD1Bzf2iP_E
I did it like the video above.
1. The process is complete, but the 'COM' and 'Port' drivers are not installed.
2. Even if you proceed with the update file, 'COM' is not created.
Why?
'COM PORT' not open.
Re: 'COM PORT' not open.
It's an USB bootloader, but it does not use COM port for firmware upload. COM port is used only to reset board and you need to flash firmware with USB Serial enabled to see COM port.
Also, it's an old bootloader, HID bootloader is a better option: https://github.com/Serasidis/STM32_HID_Bootloader/
Also, it's an old bootloader, HID bootloader is a better option: https://github.com/Serasidis/STM32_HID_Bootloader/