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  • Case ID: 339861
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Getting error "ImportError: Module use of python312.dll conflicts with this version of Python." when flashing - can build perfectly fine

SoldOutYungLean

I get the error "ImportError: Module use of python312.dll conflicts with this version of Python." when I try to flash my device using any Python version below 3.12.x. I get no error when I try to build the project.

However, when I set the global Python version to 3.12.0 using pyenv, it first and foremost correctly doesn't recognize the nrfutil package until I install it into the new version, which is a sign that it has correctly changed the version, but I also get a new error related to not having the package "constants." When I pip install that I get a third error:

versions\3.12.0\Lib\site-packages\nordicsemi\lister\windows\lister_win32.py", line 43, in <module>
    from constants import DIGCF_PRESENT, DEVPKEY, DIGCF_DEVICEINTERFACE
ImportError: cannot import name 'DIGCF_PRESENT' from 'constants' (C:\Users\DripTooHard\.pyenv\pyenv-win\versions\3.12.0\Lib\site-packages\constants.py)


Looking online, it seems like the fix to this issue is to downgrade to 3.8 or 3.9. But this just goes back to me having the original error.

I tried looking at the support information, and it seems like the toolchain is reffering to a Python 3.12.4 version?

// IMPORTANT: The following data can contain sensitive or confidential information about your environment.
// If you do not want others to see this information, make sure to remove it before sharing the data.

// For help and support, visit Nordic Semiconductor's DevZone at https://devzone.nordicsemi.com/.

{
  "platform": {
    "os": "win32",
    "osVersion": "Windows 11 Home",
    "osKernel": "10.0.26100",
    "vscode": "1.96.4",
    "electron": "32.2.6",
    "node": "v20.18.1"
  },
  "system": {
    "date": "2025-01-30T15:19:16.999Z",
    "vscodeRoot": "d:\\DripTooHard\\Microsoft VS Code\\resources\\app",
    "nrfConnectForDesktopInstalled": true,
    "vscodeUptime": "00:12:00",
    "osUptime": "00:36:06",
    "cpu": "11th Gen Intel(R) Core(TM) i5-11400H @ 2.70GHz"
  },
  "workspace": {
    "name": "record_launch_app",
    "workspaceFile": null,
    "folders": [
      "d:\\ncs\\v2.8.0\\nrf\\samples\\nfc\\record_launch_app"
    ]
  },
  "sdks": [
    {
      "version": "v2.8.0",
      "path": "d:\\ncs\\v2.8.0"
    }
  ],
  "activeBuild": "d:\\ncs\\v2.8.0\\nrf\\samples\\nfc\\record_launch_app\\build",
  "apps": [
    {
      "workspace": "d:\\ncs\\v2.8.0\\nrf\\samples\\nfc\\record_launch_app",
      "uri": "d:\\ncs\\v2.8.0\\nrf\\samples\\nfc\\record_launch_app",
      "buildConfigurations": [
        {
          "id": "d:\\ncs\\v2.8.0\\nrf\\samples\\nfc\\record_launch_app\\build",
          "name": "build",
          "boardId": "nrf54l15dk/nrf54l15/cpuapp",
          "type": "Sysbuild",
          "isChild": false,
          "isStale": false,
          "taskBindings": {
            "build": [],
            "pristineBuild": [],
            "flash": [],
            "eraseAndFlash": []
          },
          "sdk": "d:\\ncs\\v2.8.0",
          "toolchain": "nRF Connect SDK Toolchain v2.8.0"
        }
      ]
    }
  ],
  "toolchains": [
    {
      "version": "2.8.0",
      "path": "c:\\ncs\\toolchains\\2d382dcd92"
    }
  ],
  "connectedDevices": [
    {
      "serialNumber": "001057733114"
    }
  ],
  "tools": {
    "C:\\ncs\\toolchains\\2d382dcd92\\opt\\zephyr-sdk\\arm-zephyr-eabi\\bin\\arm-zephyr-eabi-gcc.exe": "0.16.8",
    "C:\\Program Files\\SEGGER\\JLink_V794i\\JLink.exe": "7.94i",
    "C:\\Program Files\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\nrfjprog.exe": "10.24.0",
    "C:\\Users\\DripTooHard\\.pyenv\\pyenv-win\\shims\\nrfutil": null,
    "C:\\ncs\\toolchains\\2d382dcd92\\cmake": "3.21.0",
    "C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\Scripts\\west.exe": "1.2.0",
    "C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\python.exe": "3.12.4",
    "C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\ninja.exe": "1.10.2",
    "C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\gperf.exe": "3.1",
    "C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\dtc.exe": "1.4.7",
    "C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\gn.exe": "2201",
    "C:\\ncs\\toolchains\\2d382dcd92\\mingw64\\bin\\git.exe": "2.37.3.windows.1",
    "arm-gdbPath": "c:\\ncs\\toolchains\\2d382dcd92\\opt\\zephyr-sdk\\arm-zephyr-eabi\\bin\\arm-zephyr-eabi-gdb.exe",
    "riscv-gdbPath": "C:\\ncs\\toolchains\\2d382dcd92\\opt\\zephyr-sdk\\riscv64-zephyr-elf\\bin\\riscv64-zephyr-elf-gdb.exe"
  },
  "nrfutil": {
    "nrfutil-device": {
      "version": "2.7.9",
      "binPath": "c:\\Users\\DripTooHard\\.vscode\\extensions\\nordic-semiconductor.nrf-connect-2025.1.127-win32-x64\\platform\\nrfutil\\bin\\nrfutil-device",
      "jlinkInfo": {
        "name": "JlinkARM",
        "version": "JLink_V7.94i",
        "versionFormat": "string"
      }
    },
    "nrfutil-toolchain-manager": {
      "version": "0.14.4",
      "binPath": "c:\\Users\\DripTooHard\\.vscode\\extensions\\nordic-semiconductor.nrf-connect-2025.1.127-win32-x64\\platform\\nrfutil\\bin\\nrfutil-toolchain-manager"
    }
  },
  "environment": {
    "westEnv": {
      "HOME": "C:\\Users\\DripTooHard",
      "HOMEDRIVE": "C:",
      "HOMEPATH": "\\Users\\DripTooHard",
      "PATH": "C:\\ncs\\toolchains\\2d382dcd92;C:\\ncs\\toolchains\\2d382dcd92\\mingw64\\bin;C:\\ncs\\toolchains\\2d382dcd92\\bin;C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin;C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\Scripts;C:\\ncs\\toolchains\\2d382dcd92\\opt\\nanopb\\generator-bin;C:\\ncs\\toolchains\\2d382dcd92\\opt\\zephyr-sdk\\arm-zephyr-eabi\\bin;C:\\ncs\\toolchains\\2d382dcd92\\opt\\zephyr-sdk\\riscv64-zephyr-elf\\bin;c:\\Users\\DripTooHard\\.vscode\\extensions\\nordic-semiconductor.nrf-connect-2025.1.127-win32-x64\\platform\\nrfutil\\lib\\nrfutil-toolchain-manager;C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v12.0\\bin;C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v12.0\\libnvvp;C:\\Program Files\\Java\\jdk-19\\bin;C:\\Program Files\\Common Files\\Oracle\\Java\\javapath;C:\\Program Files (x86)\\Common Files\\Oracle\\Java\\java8path;C:\\Program Files (x86)\\Common Files\\Oracle\\Java\\javapath;C:\\Program Files\\Microsoft\\jdk-11.0.12.7-hotspot\\bin;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Windows\\System32\\OpenSSH\\;C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common;C:\\Program Files\\NVIDIA Corporation\\NVIDIA NvDLISR;C:\\Program Files\\PuTTY\\;C:\\Program Files\\GitHub CLI\\;C:\\Program Files\\dotnet\\;C:\\MinGW\\bin;C:\\Program Files (x86)\\sbt\\bin;C:\\Program Files\\nodejs\\;C:\\Program Files\\NVIDIA Corporation\\Nsight Compute 2022.4.0\\;C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem;C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\;C:\\Users\\DripTooHard\\AppData\\Local\\Programs\\Python\\Python38-32;C:\\WINDOWS\\System32\\OpenSSH\\;C:\\Program Files\\Git LFS;C:\\Users\\DripTooHard\\Downloads\\hugo_0.111.3_windows-amd64;C:\\Program Files\\Docker\\Docker\\resources\\bin;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin;C:\\Program Files\\Git\\cmd;C:\\Users\\DripTooHard\\PycharmProjects\\pythonProject1\\msedgedriver.exe;C:\\Program Files\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin\\arm-none-eabi-addr2line.exe;C:\\Users\\DripTooHard\\AppData\\Local\\Android\\Sdk\\platform-tools;C:\\Program Files\\Vagrant\\bin;C:\\Users\\DripTooHard\\Spin\\Bin;D:\\bin;D:\\Matlab\\runtime\\win64;D:\\Matlab\\bin;C:\\Users\\DripTooHard\\.pyenv\\pyenv-win\\bin;C:\\Users\\DripTooHard\\.pyenv\\pyenv-win\\shims;C:\\Users\\DripTooHard\\AppData\\Local\\Microsoft\\WindowsApps;C:\\Program Files\\JetBrains\\PyCharm 2022.2.1\\bin;C:\\Users\\DripTooHard\\.dotnet\\tools;C:\\Program Files\\JetBrains\\IntelliJ IDEA 2022.2.1\\bin;C:\\Program Files\\JetBrains\\CLion 2022.2.1\\bin;C:\\Users\\DripTooHard\\AppData\\Roaming\\npm;C:\\Users\\DripTooHard\\go\\bin;C:\\Users\\DripTooHard\\AppData\\Local\\Microsoft\\WinGet\\Packages\\Hugo.Hugo.Extended_Microsoft.Winget.Source_8wekyb3d8bbwe;C:\\Program Files\\JetBrains\\WebStorm 2023.3\\bin;D:\\DripTooHard\\Microsoft VS Code\\bin;",
      "ZEPHYR_BASE": "d:\\ncs\\v2.8.0\\zephyr",
      "ZEPHYR_TOOLCHAIN_VARIANT": "zephyr",
      "ZEPHYR_SDK_INSTALL_DIR": "C:\\ncs\\toolchains\\2d382dcd92\\opt\\zephyr-sdk",
      "PYTHONPATH": "C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin;C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\Lib;C:\\ncs\\toolchains\\2d382dcd92\\opt\\bin\\Lib\\site-packages"
    },
    "inherited": {
      "HOME": "C:\\Users\\DripTooHard",
      "HOMEDRIVE": "C:",
      "HOMEPATH": "\\Users\\DripTooHard",
      "Path": "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v12.0\\bin;C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v12.0\\libnvvp;C:\\Program Files\\Java\\jdk-19\\bin;C:\\Program Files\\Common Files\\Oracle\\Java\\javapath;C:\\Program Files (x86)\\Common Files\\Oracle\\Java\\java8path;C:\\Program Files (x86)\\Common Files\\Oracle\\Java\\javapath;C:\\Program Files\\Microsoft\\jdk-11.0.12.7-hotspot\\bin;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Windows\\System32\\OpenSSH\\;C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common;C:\\Program Files\\NVIDIA Corporation\\NVIDIA NvDLISR;C:\\Program Files\\PuTTY\\;C:\\Program Files\\GitHub CLI\\;C:\\Program Files\\dotnet\\;C:\\MinGW\\bin;C:\\Program Files (x86)\\sbt\\bin;C:\\Program Files\\nodejs\\;C:\\Program Files\\NVIDIA Corporation\\Nsight Compute 2022.4.0\\;C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem;C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\;C:\\Users\\DripTooHard\\AppData\\Local\\Programs\\Python\\Python38-32;C:\\WINDOWS\\System32\\OpenSSH\\;C:\\Program Files\\Git LFS;C:\\Users\\DripTooHard\\Downloads\\hugo_0.111.3_windows-amd64;C:\\Program Files\\Docker\\Docker\\resources\\bin;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin;C:\\Program Files\\Git\\cmd;C:\\Users\\DripTooHard\\PycharmProjects\\pythonProject1\\msedgedriver.exe;C:\\Program Files\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin\\arm-none-eabi-addr2line.exe;C:\\Users\\DripTooHard\\AppData\\Local\\Android\\Sdk\\platform-tools;C:\\Program Files\\Vagrant\\bin;C:\\Users\\DripTooHard\\Spin\\Bin;D:\\bin;D:\\Matlab\\runtime\\win64;D:\\Matlab\\bin;C:\\Users\\DripTooHard\\.pyenv\\pyenv-win\\bin;C:\\Users\\DripTooHard\\.pyenv\\pyenv-win\\shims;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin;C:\\Users\\DripTooHard\\AppData\\Local\\Programs\\Python\\Python38-32;C:\\Users\\DripTooHard\\AppData\\Local\\Microsoft\\WindowsApps;C:\\Program Files\\JetBrains\\PyCharm 2022.2.1\\bin;C:\\Users\\DripTooHard\\.dotnet\\tools;C:\\Program Files\\JetBrains\\IntelliJ IDEA 2022.2.1\\bin;C:\\MinGW\\bin;C:\\Program Files\\JetBrains\\CLion 2022.2.1\\bin;C:\\Users\\DripTooHard\\AppData\\Roaming\\npm;C:\\Users\\DripTooHard\\go\\bin;C:\\Users\\DripTooHard\\AppData\\Local\\Microsoft\\WinGet\\Packages\\Hugo.Hugo.Extended_Microsoft.Winget.Source_8wekyb3d8bbwe;C:\\Program Files\\JetBrains\\WebStorm 2023.3\\bin;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin\\arm-none-eabi-addr2line.exe;C:\\Users\\DripTooHard\\AppData\\Local\\Android\\Sdk\\platform-tools;C:\\Users\\DripTooHard\\AppData\\Local\\Microsoft\\WindowsApps;D:\\DripTooHard\\Microsoft VS Code\\bin;",
      "PATH": "C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v12.0\\bin;C:\\Program Files\\NVIDIA GPU Computing Toolkit\\CUDA\\v12.0\\libnvvp;C:\\Program Files\\Java\\jdk-19\\bin;C:\\Program Files\\Common Files\\Oracle\\Java\\javapath;C:\\Program Files (x86)\\Common Files\\Oracle\\Java\\java8path;C:\\Program Files (x86)\\Common Files\\Oracle\\Java\\javapath;C:\\Program Files\\Microsoft\\jdk-11.0.12.7-hotspot\\bin;C:\\Windows\\system32;C:\\Windows;C:\\Windows\\System32\\Wbem;C:\\Windows\\System32\\WindowsPowerShell\\v1.0\\;C:\\Windows\\System32\\OpenSSH\\;C:\\Program Files (x86)\\NVIDIA Corporation\\PhysX\\Common;C:\\Program Files\\NVIDIA Corporation\\NVIDIA NvDLISR;C:\\Program Files\\PuTTY\\;C:\\Program Files\\GitHub CLI\\;C:\\Program Files\\dotnet\\;C:\\MinGW\\bin;C:\\Program Files (x86)\\sbt\\bin;C:\\Program Files\\nodejs\\;C:\\Program Files\\NVIDIA Corporation\\Nsight Compute 2022.4.0\\;C:\\WINDOWS\\system32;C:\\WINDOWS;C:\\WINDOWS\\System32\\Wbem;C:\\WINDOWS\\System32\\WindowsPowerShell\\v1.0\\;C:\\Users\\DripTooHard\\AppData\\Local\\Programs\\Python\\Python38-32;C:\\WINDOWS\\System32\\OpenSSH\\;C:\\Program Files\\Git LFS;C:\\Users\\DripTooHard\\Downloads\\hugo_0.111.3_windows-amd64;C:\\Program Files\\Docker\\Docker\\resources\\bin;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin;C:\\Program Files\\Git\\cmd;C:\\Users\\DripTooHard\\PycharmProjects\\pythonProject1\\msedgedriver.exe;C:\\Program Files\\Nordic Semiconductor\\nrf-command-line-tools\\bin\\;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin\\arm-none-eabi-addr2line.exe;C:\\Users\\DripTooHard\\AppData\\Local\\Android\\Sdk\\platform-tools;C:\\Program Files\\Vagrant\\bin;C:\\Users\\DripTooHard\\Spin\\Bin;D:\\bin;D:\\Matlab\\runtime\\win64;D:\\Matlab\\bin;C:\\Users\\DripTooHard\\.pyenv\\pyenv-win\\bin;C:\\Users\\DripTooHard\\.pyenv\\pyenv-win\\shims;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin;C:\\Users\\DripTooHard\\AppData\\Local\\Programs\\Python\\Python38-32;C:\\Users\\DripTooHard\\AppData\\Local\\Microsoft\\WindowsApps;C:\\Program Files\\JetBrains\\PyCharm 2022.2.1\\bin;C:\\Users\\DripTooHard\\.dotnet\\tools;C:\\Program Files\\JetBrains\\IntelliJ IDEA 2022.2.1\\bin;C:\\MinGW\\bin;C:\\Program Files\\JetBrains\\CLion 2022.2.1\\bin;C:\\Users\\DripTooHard\\AppData\\Roaming\\npm;C:\\Users\\DripTooHard\\go\\bin;C:\\Users\\DripTooHard\\AppData\\Local\\Microsoft\\WinGet\\Packages\\Hugo.Hugo.Extended_Microsoft.Winget.Source_8wekyb3d8bbwe;C:\\Program Files\\JetBrains\\WebStorm 2023.3\\bin;C:\\Program Files (x86)\\Arm GNU Toolchain arm-none-eabi\\13.2 Rel1\\bin\\arm-none-eabi-addr2line.exe;C:\\Users\\DripTooHard\\AppData\\Local\\Android\\Sdk\\platform-tools;C:\\Users\\DripTooHard\\AppData\\Local\\Microsoft\\WindowsApps;D:\\DripTooHard\\Microsoft VS Code\\bin;"
    }
  },
  "terminal": {
    "defaultProfile": "PowerShell"
  },
  "config": {
    "nordic-semiconductor.nrf-connect": {
      "topdir": "",
      "toolchain": {
        "path": ""
      },
      "ozonePath": "",
      "applications": [],
      "applicationOptions": {},
      "kconfig": {
        "interface": "kconfig"
      },
      "west": {
        "env": {
          "$base": "terminal"
        }
      },
      "boardRoots": [],
      "taskBindings": {},
      "buildTerminal": {
        "condensedProgress": true
      },
      "debugging": {
        "flash": true,
        "bindings": {},
        "justMyCode": false
      },
      "activeAppFollowActiveEditor": true,
      "flash": {
        "softreset": false,
        "erase": false,
        "recover": false
      },
      "enableTelemetry": false,
      "thirdpartyIntegration": {},
      "toolchainManager": {
        "indexURL": null,
        "installDirectory": null
      },
      "nrfutil": {
        "home": null
      },
      "defaultOpenAction": "ask",
      "terminalProfile": {
        "shell": null
      }
    },
    "nordic-semiconductor.nrf-terminal": {
      "terminalMode": "character"
    }
  },
  "extensions": {
    "internal": {
      "nordic-semiconductor.nrf-connect": {
        "version": "2025.1.127",
        "path": "c:\\Users\\DripTooHard\\.vscode\\extensions\\nordic-semiconductor.nrf-connect-2025.1.127-win32-x64",
        "isActive": true
      },
      "nordic-semiconductor.nrf-terminal": {
        "version": "2024.9.14",
        "path": "c:\\Users\\DripTooHard\\.vscode\\extensions\\nordic-semiconductor.nrf-terminal-2024.9.14",
        "isActive": true
      },
      "nordic-semiconductor.nrf-devicetree": {
        "version": "2024.12.15",
        "path": "c:\\Users\\DripTooHard\\.vscode\\extensions\\nordic-semiconductor.nrf-devicetree-2024.12.15",
        "isActive": true
      },
      "nordic-semiconductor.nrf-kconfig": {
        "version": "2024.12.13",
        "path": "c:\\Users\\DripTooHard\\.vscode\\extensions\\nordic-semiconductor.nrf-kconfig-2024.12.13",
        "isActive": true
      }
    },
    "external": {
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      "ms-vscode.js-debug-companion": "1.1.3",
      "ms-vscode.vscode-js-profile-table": "1.0.10",
      "Arm.arm-debugger": "1.4.4",
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      "Arm.device-manager": "1.13.1",
      "Arm.embedded-debug": "1.2.2",
      "Arm.environment-manager": "1.10.0",
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      "cortex-debug.svd-viewer": "1.2.3",
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      "ms-toolsai.jupyter": "2024.11.0",
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      "ms-toolsai.jupyter-renderers": "1.0.21",
      "ms-toolsai.vscode-jupyter-cell-tags": "0.1.9",
      "ms-toolsai.vscode-jupyter-slideshow": "0.1.6",
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      "ms-vscode.cpptools-extension-pack": "1.3.0",
      "ms-vscode.cpptools-themes": "2.0.0",
      "ms-vscode.powershell": "2025.0.0",
      "ms-vscode.vscode-serial-monitor": "0.13.1",
      "platformio.platformio-ide": "3.3.4",
      "redhat.vscode-yaml": "1.15.0",
      "rokoroku.vscode-theme-darcula": "1.2.3",
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      "twxs.cmake": "0.0.17",
      "vscjava.vscode-gradle": "3.16.4",
      "yigits.nordic-vibes": "0.0.3"
    }
  }
}


I am wondering if the fix would be to somehow change the python version in the toolchain, but I would like to hear first if you have any other suggestions? I have gone through my path and replaced all occurances of Python with a refference to 3.8.6, but once again, it appears that pyenv is correctly setting the right python versions, so this is most likely not a path issue.

Parents Reply
  • 0 in reply to GilDev

    Hi! I fixed that, by following next steps.
    1. I have deleted the floder "C:\Users\USER_NAME\AppData\Local\Programs\Python\"Python_Ver"\Lib\site-packages\"nrfultil-xxx" " (entire folder)
    2. After that, i have tried again and get error, that i have no nrfutil installed. To fix that, i download nrfutil from link below and placed this ".exe" file to "C:\ncs\toolchains\"hash"\opt\bin\Scripts". Then you need to open the folder in Terminal (powershell, cmd) and type ".\nrfutil.exe install device".
    3. Restart VS Code, and now it should work

Children
  • 0 in reply to eminosyan

    I am getting this error now as well, and have tried your fix above. Why are things so murky and complicated?

    One day everything works, then next day all development grinds to a halt.

    Please can someone offer some practical steps so I can get going again?

    I don't have a .pyenv folder. I did just delete the nrfutil folder in C:\Users\USER_NAME\AppData\Local\Programs\Python\"Python_Ver"\Lib\site-packages, and downlaod nrfutisl and re-install etc. I am guessing things are even more messed up now. 

    Urgently need to get back developing, so any help appreciated.

  • 0 in reply to garrettb

    If I remember correctly, my issue was having other Zephyr projects not related to Nordic, and have all of that kind of in the same “workspace” or directory. It used by default the folder names “zephyr” which had a different version than the one from my Nordic projects, there also was a .west hidden directory that messed things up.

    I reinstalled my projects in separate directories, each with its own Zephyr (or ncs in C:\ for Nordic projects) and it stopped giving me errors.

  • 0 in reply to GilDev

    I think it is an nrfutils issue.
    I am trying to flash an nRF54, and I think this might be the first time (previously I have been using nRF53/52 etc.).
    I downloaded the latest nrfutil.exe, moved it to a different folder: C:\Program Files\Nordic Semiconductor
    Then included this folder in the PATH.
    Then as suggested, I opened a command window and typed:

    nrfutil self-upgrade

    Here is the output

    C:\ncs\v2.9.0>
C:\ncs\v2.9.0>nrfutil self-upgrade
Traceback (most recent call last):
File "<frozen runpy>", line 198, in _run_module_as_main
File "<frozen runpy>", line 88, in _run_code
File "C:\Users\me\AppData\Local\Programs\Python\Python311\Scripts\nrfutil.exe\__main__.py", line 4, in <module>
File "C:\Users\me\AppData\Local\Programs\Python\Python311\Lib\site-packages\nordicsemi\__main__.py", line 53, in <module>
from nordicsemi.dfu.dfu_transport_serial import DfuTransportSerial
File "C:\Users\me\AppData\Local\Programs\Python\Python311\Lib\site-packages\nordicsemi\dfu\dfu_transport_serial.py", line 52, in <module>
from nordicsemi.lister.device_lister import DeviceLister
File "C:\Users\me\AppData\Local\Programs\Python\Python311\Lib\site-packages\nordicsemi\lister\device_lister.py", line 39, in <module>
from nordicsemi.lister.windows.lister_win32 import Win32Lister
File "C:\Users\me\AppData\Local\Programs\Python\Python311\Lib\site-packages\nordicsemi\lister\windows\lister_win32.py", line 43, in <module>
from constants import DIGCF_PRESENT, DEVPKEY, DIGCF_DEVICEINTERFACE
ModuleNotFoundError: No module named 'constants'

  • 0 in reply to garrettb

    Problem solved: Just typing this out in case anybody else has the same issue.

    This was an nrfutil issue, which only arose because this was my first time trying to flash an nRF54 device. As stated above, I downloaded the latest nrfutil.exe, moved it to a a different folder: C:\Program Files\Nordic Semiconductor
    Then included this folder in the PATH.

    Ina command window, I then typed 'nrfutil self-upgrade', but this did not work.

    I then re-started my PC, as a way to force the PATH knowledge to be updated, then again, opened a command window, and 'nrfutil self-upgrade' worked. I also then entered 'nrfutil install device', not sure if this was required or not,

    Then I opened VSCode and successfully flashed the device.

    Along the way, I also updated my Python from 3.11 to 3.13.

    So either or both of these fixes was what worked....

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