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Visitor II
December 15, 2025
Question

After updating to 3.7.0, my system no longer works.

  • December 15, 2025
  • 2 replies
  • 173 views

Hello, after updating to 3.7.0, my system no longer works. I can't debug and now get an error message. It was still working an hour ago.

PaulB_1_0-1765813122775.pngPaulB_1_1-1765813136291.png

 

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    2 replies

    PaulB_1Author
    Visitor II
    December 15, 2025

    ok What helped me was
    “deviceCore”: “Cortex-M7,”
    unfortunately there are no suggestions, so you don't know what form it needs to be in.

    PaulB_1Author
    Visitor II
    December 15, 2025

    Unfortunately, it still doesn't work smoothly with two NUCLEO BOARDS H7S3L8. I always have to start board 2 first, then board 1, otherwise I keep getting this error message. However, if I start board 2 first, then board 1, it works.

    Reading symbols from d:/Projekte/Test/Cube/Board2/Test/Boot/build/test.elf...
    Exit.
    cube has exited with code 0Ignoring packet error, continuing...
    warning: unrecognized item "timeout" in "qSupported" response

    PaulB_1_0-1765814353763.png

     

    ST Employee
    December 15, 2025

    Hi Paul,


    Your first error indicates that the device core cannot be found automatically.
    The project setup was likely incomplete. Therefore, please execute the command "STM32Cube: Setup STM32Cube project(s)" via the command palette or thanks to the menu in the STM32Cube activity bar (recommended solution):

    FlorentV_3-1765816076910.png

    Alternatively, you can add the "deviceCore" attribute with the value Cortex-M7 in your case.

     

    Concerning the multiple boards connected, you need to specify the serial number using the attribute

    "serverSerialNumber": "<the serial number>",

     

    the serial number can be copied in the "STM32Cube Devices and Boards" view here:
    FlorentV_2-1765816013615.png

    Without the serial number attribute, the debug session cannot determine which board is the correct one.

    KR,
    Flo

     

     



    Visitor II
    December 17, 2025

    Hi there

    While developing today my system suddenly stopped being able to start the debugger. I suspect this is due to VSCode updating the extension to 3.7.0. I get the same error as Paul above:

    bound doStepConnectToTarget Failed: Remote replied unexpectedly to 'vMustReplyEmpty': timeout

    EPoulsen_0-1765976757671.png

    The debug console shows:

    Reading symbols from PATH TO elf...

    Ignoring packet error, continuing...
    warning: unrecognized item "timeout" in "qSupported" response
    Ignoring packet error, continuing...
     
    I only have a single STLink connected, and have tested two individual board (one custom, one STM32F411E-DISCO).
     
     
    Any clues to what could fix this issue?
     
    Thanks!
     
    Best,
    Ebbe
    Visitor II
    December 18, 2025

    Hello again

    I got my debugger working by:

    • Uninstalling all ST programs from my machine
    • Uninstalling VSCode extension
    • Reinstalling VSCode extension
    • Updating ST-Link firmware