Skip to main content
vs13
Associate II
June 25, 2024
Solved

ST-Link V2 won't connect after firmware update

After I updated ST-Link to firmware version V2J43S7 through STM32 Cube Programmer, I can't connect it to my laptop and program my STM32 F405 Feather board. I have attached the error message to this post.

This topic has been closed for replies.
TechnBest answer
Senior III
June 26, 2024

Try to connect while you press reset

 

"If you feel a post has answered your question, please click ""Accept as Solution""."
View in thread

7 replies

Tesla DeLorean
Tesla DeLorean
Guru
June 25, 2024

Is this an Authentic ST-LINK? or boot-leg one?

If you break the PA13/PA14 pin operation you won't be able to connect. Reset with BOOT0=HIGH to stop running broken user code.

Tips, Buy me a coffee, or three.. PayPal Venmo (See Profile) Up vote any posts that you find helpful, it shows what's working..
    vs13Author
    Associate II
    June 25, 2024

    It is an authentic ST-LINK! I've reset the board, but I still can't connect. How would I break the PA13/14 operation?

    AScha.3
    AScha.3
    Super User
    June 25, 2024

    >How would I break the PA13/14 operation?

    If you set (in CubeMx ) not SWD debug, but use the pins for anything else ; then no more debug, as soon, as your program starts.

    Then only can use bootloader, or hard reset (connect under reset, hard reset ( setting)) to connect.

    If you feel a post has answered your question, please click on " Best Answer ".
      Terms & ConditionsAccessibility statement