How to Install the STM32 USB Bootloader, New Version! (Blue Pill F103C8T6)

A year and a half later and we have a great new bootloader version. It works swimmingly and I am happy to be able to share it with the world!

Additional Board Manager URL:

STM32 Cube Programmer:

HID Bootloader:

How to tell if your board is low, medium, or high density:

STM32 "Blue Pill" Discord:

[frackingoil]

After a full day of trying to get my ST32 to work, you came in clutch. Thank you so much!

[walterhynson]

wow, looks like the folks over at STM finally got it together and realized Arduino is here to stay. THANKS

[dave_dennis]

How ironic that you uploaded this UPDATE on the very day I was researching how to do this. Thanks for making an UPDATE!

[luizdanielsantos]

Use the PB2 port tied to +3.3V after a RESET. This will kick in the HID Bootloader (even with anything written previously). One also can unplug the USB, tie PB2 to +3.3V, and plug it to the USB port, this also can kick in the HID Bootloader.

[batuhansarp]

Agreed, if windows doesn't recognize the bluepill just unplug it from power and plug it again several times, it will work.

[okrm]

Very useful video, thank you. I solved my bootloader problems with two different STM32 boards within a couple of minutes. Especially the links in description are very useful: all are valid and get the right things I needed. Perfect explanation why and how. Many, many thanks!

[OmarElmasry]

this video is amazing on so many levels, liked and subbed.

[ihakov]

Thank you very much for your guidance. Spent 1.5 days to make STA32 working until I saw your video. Now I am good now. Just FYI, I used STM Flash Loader to flash bootloader and in the Arduino's Upload method I used HID Bootloader 2.2

[nmc]

I had tossed 5 blue pill boards in a drawer after wrestling for days to get them to work with Platform.io back in 2018. I recently got interested in using them with DIY Eurorack synth modules. This procedure & the new bootloader did the trick, even with counterfeit CKS32F103C8T6 microcontrollers on the boards! Thanks for the update!

[UndefinedEssence]

This is one of the best videos for this, I appreciate the clean look and sound of the video as well.

[smilespray]

Thanks for this! I already had a pile of these lying around, but I haven't used them due to programming being fiddly. Ordered 10 more and will be flashing the new bootloader on all of them.

[jeffowen]

Thanks for such a clear and concise video. First time I've got a blue pill bootloader to work!

[fredov]

Thank you, just saw this on reddit, the day after i got the board. Subscribed!

[MrSudni]

thank you for your video, now my 'Blue Pill' work well with Arduino, and serial output it's great to help to display info or debug.
Great job.

[roadeycarl]

This is fantastic. Thank you so much!! I have updated the boot-loader on all my STM32 boards!

[davidwoodward]

Great video! Explained a lot of the basics that other videos skipped over.

[InterdimensionalWiz]

You just saved me about 15 hours work! thanks Sooo much man.... works first time, exactly as you have described.... cheeeers!

[dentakuweb]

Nice! I was able to program my Blue Pill a while ago then something happened and I just kept getting errors. This video inspired me to clean up my IDE and set everything up again.
By following your instructions I was able to get it all working again.
Now I need to see if I can program a little 32F030F4P6 board I got a while ago.

[sakugava]

Thank you very much. Worked like a charm!

[bruceme]

Great video Caleb!

build_flags =
-D
-D USBCON
-D USBD_PID
-D USBD_VID=0x0483
-D USB_MANUFACTURER="Unknown"
-D
-D HAL_PCD_MODULE_ENABLED

NOTE: -D USBD_PID
was required, if you look at the error it's obvious, but that should work as of me typing this.