2026-04-17 3:41 AM - last edited on 2026-04-17 3:47 AM by Andrew Neil
Good morning everyone,
I have this Mini STM32F103C8T6 CH340 board which supposedly has the original chip (photo), I configure it as suggested in a post I saw here but it gives an error (attachment).
Does anyone have a solution?
Edited to place Images in-line for easier viewing:
Solved! Go to Solution.
2026-04-17 3:59 AM - edited 2026-04-22 3:31 AM
welcome to the forum.
Please see How to write your question to maximize your chances to find a solution for best results.
@geniuxtechnology wrote:I have this Mini STM32F103C8T6 CH340 board
Not sure what you mean by a "STM32F103C8T6 CH340 board" ?
CH340 is a USB-to-UART converter.
Please give more details of your board: manufacturer? Full product name? Link to specifications? Link to where you bought it?
Good, clear photos of the whole board - top & bottom?
@geniuxtechnology wrote:supposedly has the original chip
If you bought it from somewhere like aliexpress, ebay, amazon, et al, that's probably unlikely.
For best results, get a genuine ST board from an Official Distributor; eg,
https://www.st.com/en/evaluation-tools/nucleo-f103rb.html
Maybe this could help to identify the chip:
https://mecrisp-stellaris-folkdoc.sourceforge.io/bluepill-diags-v1.640.html#diags-1-640
@geniuxtechnology wrote:I configure it as suggested in a post I saw here
Please give a link to that post.
A good, clear photo of your complete setup would help.
@geniuxtechnology wrote:but it gives an error (attachment).
Rather than a screenshot, it would be more useful to copy & paste the text.
So you're trying to use the serial bootloader, and that is failing.
2026-04-17 3:48 AM - edited 2026-04-17 3:49 AM
Hello @geniuxtechnology and welcome to the ST community.
What is the relation between: STM32F103C8T6, CH340 chip and CubeProgrammer? What are you trying to do exactly?
Please read How to write your question to maximize your chances to find a solution
2026-04-17 3:59 AM - edited 2026-04-22 3:31 AM
welcome to the forum.
Please see How to write your question to maximize your chances to find a solution for best results.
@geniuxtechnology wrote:I have this Mini STM32F103C8T6 CH340 board
Not sure what you mean by a "STM32F103C8T6 CH340 board" ?
CH340 is a USB-to-UART converter.
Please give more details of your board: manufacturer? Full product name? Link to specifications? Link to where you bought it?
Good, clear photos of the whole board - top & bottom?
@geniuxtechnology wrote:supposedly has the original chip
If you bought it from somewhere like aliexpress, ebay, amazon, et al, that's probably unlikely.
For best results, get a genuine ST board from an Official Distributor; eg,
https://www.st.com/en/evaluation-tools/nucleo-f103rb.html
Maybe this could help to identify the chip:
https://mecrisp-stellaris-folkdoc.sourceforge.io/bluepill-diags-v1.640.html#diags-1-640
@geniuxtechnology wrote:I configure it as suggested in a post I saw here
Please give a link to that post.
A good, clear photo of your complete setup would help.
@geniuxtechnology wrote:but it gives an error (attachment).
Rather than a screenshot, it would be more useful to copy & paste the text.
So you're trying to use the serial bootloader, and that is failing.
2026-05-29 1:22 AM
Hello @geniuxtechnology ,
Thank you for your question. Based on the information provided, it can be due to a non-genuine ST product.
We recommend contacting your seller or the third party where you purchased the product for further clarification. For assurance of buying authentic ST products, please purchase exclusively through our official distributors listed here: ST Official Distributors.
For any inquiry about product authenticity please contact corporate.security@st.com.
Best regards,
Maxime
We’re moving the ST Community to a new platform to give you a better and more reliable community experience.