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Ajadh.1
Visitor II
November 28, 2025
Question

Stm32G0 Nucleo is detecting as Jlink But want it to detect as stm stlink port

  • November 28, 2025
  • 3 replies
  • 480 views

Hi,

I need some solution. Issue is stm32G0b1re nucleo board is detecting as Jlink device in device manager. But I want this to detect as STM stlink device. 

I have uninstall driver then it is decting as USB port. Even I have tried to install stsw-link009 driver. But somehow it is not installing driver. As I can't that in control manager. 

let me know what to be done to update driver so that I could see it as STM stlink device.

 

Thank You

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    3 replies

    I
    Imen.D
    Technical Moderator
    November 28, 2025

    Hello @Ajadh.1 

    Is it a genuine ST-Link? Refer to the following article to check if you are using a genuine ST-LINK/V2 or a cloned one: How to recognize a genuine ST-LINK/V2 versus a cloned one.

    Make sure to install USB driver correctly.

    Verify that the USB VBUS pin is properly powered and check that jumpers on the STM32G0 board are correctly connected. 

    Check the tips on How to solve connection errors when connecting and programming the STM32 target board

    O
    Ozone
    Explorer
    November 28, 2025

    Why not using it as JLink, these debug adapters have wider toolchain support than ST-Links.

    Segger has ST-Link firmware available on their website for free download, which allows one to convert onboard ST-Links into JLinks. The website also has a (Windows) tool to flash it.

    Probably <somebody> converted this Nucleo board that way.

    Download and install the tool, it also allows you to convert it back to ST-Link.

      A
      Andrew Neil
      Super User
      December 5, 2025
      @Ajadh.1 wrote:

      stm32G0b1re nucleo board is detecting as Jlink device in device manager.

      And you are using the built-in debugger on the Nucleo board itself - via CN2 - yes?

      AndrewNeil_0-1764931387245.png

       

      In that case, you (or somebody before you) must have converted that ST-Link to a J-Link using Segger's converter:

      https://www.segger.com/products/debug-probes/j-link/models/other-j-links/st-link-on-board/

       

      You can use that same converter to reverse the process: Restore ST-Link Firmware.

       

       

      PS:

      If you have trouble with Segger's utility, you need to contact Segger for support - it's nothing to do with ST:

      https://www.segger.com/support/technical-support/

      https://forum.segger.com/board/4-j-link-flasher-related/

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