cancel
Showing results for 
Search instead for 
Did you mean: 

STM32U031K8U6 Download fail.

박인구
Associate II

hi~! 

I made a IOT prototype with STM32U031K8T6, but I can't download firmware.

The connection isn't working ad it should, can anyone tell me the issues with the attacked circuit ??

I've tried both j-link and st-link download tools. 

_0-1750678666419.png

 

please reply from users who have used STM32U031.   

12 REPLIES 12

STM32U031K8U6  SWD Download fail

"Write protection is enabled."

"IC purchased from Digi-Key"

"Unable to download after compiling in STM32CubeIDE."

"The connection frequently drops in STM32CubeProgrammer."

화면 캡처 2025-09-25 204356.png

 

SWD 5PIN: +3.3V, SWDIO, SWCLK, NRST, GND

MCU.png

 

st VLINK V2

csocom_1-1758800894488.png

 

"The STM32F469 is working properly using the ST-LINK V2."

화면 캡처 2025-09-25 205017.png

 

"After purchasing from Digi-Key and connecting with ST-Link Utility, I found that it is write-protected."

 

You posted a screenshot of the ST-LINK/V2 from the website, but I asked for a photo of the front and back of the ST-LINK/V2 in front of you.

The ST-LINK Utility is long outdated and no longer works with newer MCUs such as the STM32U.

Regards
/Peter

In order to give better visibility on the answered topics, please click on Accept as Solution on the reply which solved your issue or answered your question.