STM32F103C6T6 USB Bootloader Flash Issue

[Kartik1004]

I've been previously programming the STM32F103C6T6 blue pill with an FTDI via UART and am now trying to flash a USB bootloader binary to program it directly via USB.
I've closely followed the guide on https://www.electrosoftcloud.com/en/stm32f103-bootloader-and-programming/ - I've successfully flashed the generic_bootloader_pc_13.bin file via UART, installed the required drivers, and followed the BOOT0 pattern correctly. On connecting via USB, the board is detected as "Maple DFU" in the Device Manager.

But STM32CubeProgrammer keeps showing "No DFU detected" when I try connecting via USB and pressing the refresh button.

However, when I enter the PID and VID specified in the Maple DFU driver properties shown below in STM32CubeProgrammer: 

On refreshing and trying to connect, the error "unknown or unsupported device" is displayed:

I've followed several online resources, and nobody seems to encounter this issue.
Can anyone provide any insights into why this might occur?

[TDK]

STM32CubeProgrammer is looking for the system bootloader DFU, not some other device (Maple DFU).

I recommend using stm32duino tools to interface with the device via their bootloader.

[Kartik1004]

Oh, okay, thanks! But to program the device through STM32CubeIDE via USB, can I use a bootloader, or do I need to resort to UART/ST-LINK?

[AScha.3]

you decided to use stm cpu and ..cubeide, so you need a st-link to connect/debug.

if money is a problem, try a cheap st-linkV2 ("clone") stick , 3$ investment. (but buy only, where you can see some comments from buyers, this unit is working fine . there are many bad st-link-sticks, wont work with ide/debug. )

[MM..1]

AN2606 STM32 microcontroller system memory boot mode - Application note

[Pavel A.]

So does your device show up with error as on the picture above, or as "Maple DFU"? The error shown above is not caused by any 3rd party driver, it is in the low level USB communication. Try a better cable and/or good USB 2.0 (not 3.x!) hub, better a powered one. If still shows up like above, your device (STM32) does not work.

[Kartik1004]

The device shows as "Maple DFU" when I boot from the user flash with Arduino STM32 tools and with the error when I boot from the system DFU bootloader. One of the cables I tried was indeed causing problems, and I'll try a USB 2.x hub as my system has USB 3.x ports only. But why not USB 3.x?

[Pavel A.]

> But why not USB 3.x?

New USB 3.x hubs sometimes are less tolerable to "not 100% compatible" full speed devices. Depends on the model, of course.

[MM..1]

why you dont choice device with system DFU? List is in AN2606

[Kartik1004]

So you mean that the STM32F10xxx series lacks a USB bootloader as the only bootloader listed on Page 75 is USART1? Other series do have DFU bootloader listed in their bootloader configuration. Seems there's no way to program the device in hand using STM32CubeProg and USB. I need to use this device so FTDI (to flash bin files)/ST-Link (to use STM32Cube since FTDI doesn't support debugging) are probably the only options :\

[MM..1]

Yes as you see DFU is only 105 107

but MCUs with USB interface without this in system ROM, can use user coded DFU ... you test it, but not based on BOOT0 pin...