Showing results for 
Search instead for 
Did you mean: 

Using one connected embedded ST-Link to program another Nucleo.


Hello everyone,


I unfortunately broke the ST-Link-Board of my Nucleo F439ZI. So I bought another one.

Now I wanne use the embedded ST-Link of the new board to program the old Nucleo. But I am running in verious errors. 

Does anyone have experiences with this? Is it even possible while the ST-Link is still connected with the other halb of the board?


Thankfull for any help whatsoever.

ST Employee

Welcome @alexander_pitthan, to the community!

Yes, you can also use the ST-LINK/V2-1 for another target board without breaking it off. There are two jumpers CN4 on the break-off part of the ST-LINK with the following labeling:

  • NUCLEO (with filled in boxes, symbolizing inserted jumpers)
  • ST-LINK (with empty boxes,symbolizing removed jumpers

Simply remove these jumpers and connect the new target via CN6, details in UM1974, section 6.3.4.

Hope that helps?

Good luck!

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.