diff --git a/flake.nix b/flake.nix
index ad3c074..c0ff73b 100644
--- a/flake.nix
+++ b/flake.nix
@@ -5,7 +5,10 @@
   outputs = { self, nixpkgs }@inputs:
     let
       # Nixpkgs instantiated for supported system types
-      nixpkgsFor = forAllSystems (system: import nixpkgs { inherit system; });
+      nixpkgsFor = forAllSystems (system: import nixpkgs { 
+        inherit system;
+        config.allowUnfree = true;  # :(
+      });
 
       lastModifiedDate =
         self.lastModifiedDate or self.lastModified or "19700101";
@@ -103,11 +106,9 @@
             gperf
             ccache
             gmp.dev
-            # openocd
+            openocd
             dfu-util
             bossa
-            # pkgs.nrfutil # UNFREE
-            # nRF-Command-Line-Tools
             # jlink
             srecord # for srec_cat
 
@@ -174,7 +175,13 @@
             };
           in my-west-fun {
             pnameext = "-arm";
-            moreBuildInputs = [ gcc binutils stdenv.cc.cc.lib ];
+            moreBuildInputs = [ 
+              gcc
+              binutils
+              stdenv.cc.cc.lib
+
+              pkgs.nrfutil
+            ];
             wrapperArgs = ''
               --set ZEPHYR_TOOLCHAIN_VARIANT "gnuarmemb" \
               --set GNUARMEMB_TOOLCHAIN_PATH "${arm-toolchain}"
@@ -209,6 +216,14 @@
                 --set ESPRESSIF_TOOLCHAIN_PATH "${zephyr-sdk}/xtensa-espressif_esp32_zephyr-elf"
               '';
             };
+
+
+          # from https://github.com/NixOS/nixpkgs/pull/255185
+          nrf-command-line-tools = callPackage ../pkgs_from_pr_255185/nrf-command-line-tools { };
+          nrfconnect = callPackage ../pkgs_from_pr_255185/nrfconnect { 
+            acceptLicense = true;
+          };
+          segger-jlink = callPackage ../pkgs_from_pr_255185/segger-jlink { };
         });
 
       homeManagerModules.zephyr = ({ config, lib, pkgs, ... }:
@@ -242,6 +257,10 @@
               my-west
               my-west-arm
               my-west-esp32
+
+              nrf-command-line-tools
+              nrfconnect
+              segger-jlink
             ]);
           };
         });
diff --git a/pkgs_from_pr_255185/nrf-command-line-tools/default.nix b/pkgs_from_pr_255185/nrf-command-line-tools/default.nix
new file mode 100644
index 0000000..09644c1
--- /dev/null
+++ b/pkgs_from_pr_255185/nrf-command-line-tools/default.nix
@@ -0,0 +1,76 @@
+{ lib
+, stdenv
+, fetchurl
+, autoPatchelfHook
+, udev
+, libusb1
+, segger-jlink
+}:
+
+let
+  supported = {
+    x86_64-linux = {
+      name = "linux-amd64";
+      hash = "sha256-zL9tXl2HsO8JZXEGsjg4+lDJJz30StOMH96rU7neDsg=";
+    };
+    aarch64-linux = {
+      name = "linux-arm64";
+      hash = "sha256-ACy3rXsvBZNVXdVkpP2AqrsoqKPliw6m9UUWrFOCBzs=";
+    };
+    armv7l-linux = {
+      name = "linux-armhf";
+      hash = "sha256-nD1pHL/SQqC7OlxuovWwvtnXKMmhfx5qFaF4ti8gh8g=";
+    };
+  };
+
+  platform = supported.${stdenv.system} or (throw "unsupported platform ${stdenv.system}");
+
+  version = "10.23.2";
+
+  url = let
+    versionWithDashes = builtins.replaceStrings ["."] ["-"] version;
+  in "https://nsscprodmedia.blob.core.windows.net/prod/software-and-other-downloads/desktop-software/nrf-command-line-tools/sw/versions-${lib.versions.major version}-x-x/${versionWithDashes}/nrf-command-line-tools-${version}_${platform.name}.tar.gz";
+
+in stdenv.mkDerivation {
+  pname = "nrf-command-line-tools";
+  inherit version;
+
+  src = fetchurl {
+    inherit url;
+    inherit (platform) hash;
+  };
+
+  runtimeDependencies = [
+    segger-jlink
+  ];
+
+  nativeBuildInputs = [
+    autoPatchelfHook
+  ];
+
+  buildInputs = [
+    udev
+    libusb1
+  ];
+
+  dontConfigure = true;
+  dontBuild = true;
+
+  installPhase = ''
+    runHook preInstall
+
+    rm -rf ./python
+    mkdir -p $out
+    cp -r * $out
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "Nordic Semiconductor nRF Command Line Tools";
+    homepage = "https://www.nordicsemi.com/Products/Development-tools/nRF-Command-Line-Tools";
+    license = licenses.unfree;
+    platforms = attrNames supported;
+    maintainers = with maintainers; [ stargate01 ];
+  };
+}
diff --git a/pkgs_from_pr_255185/nrfconnect/default.nix b/pkgs_from_pr_255185/nrfconnect/default.nix
new file mode 100644
index 0000000..c3a6e0e
--- /dev/null
+++ b/pkgs_from_pr_255185/nrfconnect/default.nix
@@ -0,0 +1,44 @@
+{ lib
+, fetchurl
+, appimageTools
+}:
+
+let
+  pname = "nrfconnect";
+  version = "4.3.0";
+
+  src = fetchurl {
+    url = "https://nsscprodmedia.blob.core.windows.net/prod/software-and-other-downloads/desktop-software/nrf-connect-for-desktop/${lib.versions.major version}-${lib.versions.minor version}-${lib.versions.patch version}/nrfconnect-${version}-x86_64.appimage";
+    hash = "sha256-G8//dZqPxn6mR8Bjzf/bAn9Gv7t2AFWIF9twCGbqMd8=";
+    name = "${pname}-${version}.AppImage";
+  };
+
+  appimageContents = appimageTools.extractType2 {
+    inherit pname version src;
+  };
+
+in appimageTools.wrapType2 {
+  inherit pname version src;
+
+  extraPkgs = pkgs: with pkgs; [
+    segger-jlink
+  ];
+
+  extraInstallCommands = ''
+    mv $out/bin/nrfconnect-* $out/bin/nrfconnect
+    install -Dm444 ${appimageContents}/nrfconnect.desktop -t $out/share/applications
+    install -Dm444 ${appimageContents}/usr/share/icons/hicolor/512x512/apps/nrfconnect.png \
+      -t $out/share/icons/hicolor/512x512/apps
+    substituteInPlace $out/share/applications/nrfconnect.desktop \
+      --replace 'Exec=AppRun' 'Exec=nrfconnect'
+  '';
+
+  meta = with lib; {
+    description = "Nordic Semiconductor nRF Connect for Desktop";
+    homepage = "https://www.nordicsemi.com/Products/Development-tools/nRF-Connect-for-desktop";
+    license = licenses.unfree;
+    platforms = platforms.linux;
+    maintainers = with maintainers; [ stargate01 ];
+    mainProgram = "nrfconnect";
+  };
+}
diff --git a/pkgs_from_pr_255185/segger-jlink/default.nix b/pkgs_from_pr_255185/segger-jlink/default.nix
new file mode 100644
index 0000000..cfec869
--- /dev/null
+++ b/pkgs_from_pr_255185/segger-jlink/default.nix
@@ -0,0 +1,228 @@
+{ lib
+, stdenv
+, fetchurl
+, autoPatchelfHook
+, udev
+, config
+, acceptLicense ? config.segger-jlink.acceptLicense or false
+, fontconfig
+, xorg
+, makeDesktopItem
+, copyDesktopItems
+}:
+
+let
+  supported = {
+    x86_64-linux = {
+      name = "x86_64";
+      hash = "sha256-WGEDvB6TJ8Y2Xl1VUB1JWVMK54OevvPoVGris3I27t4=";
+    };
+    i686-linux = {
+      name = "i386";
+      hash = "sha256-BOQ4yExDRGKuUvsPUUswElrps0SpXcDCHxy2tmGbV/I=";
+    };
+    aarch64-linux = {
+      name = "arm64";
+      hash = "sha256-ZWzaWCUgV4x5Fbz+jphj771kIyLyeoRZKjgf8rmbFxQ=";
+    };
+    armv7l-linux = {
+      name = "arm";
+      hash = "sha256-Qjb5P1XH/CoiLP9iqWyEX0YHUjDIuSdw5ej1bE61T48=";
+    };
+  };
+
+  platform = supported.${stdenv.system} or (throw "unsupported platform ${stdenv.system}");
+
+  version = "794a";
+
+  url = "https://www.segger.com/downloads/jlink/JLink_Linux_V${version}_${platform.name}.tgz";
+
+  src =
+    assert !acceptLicense -> throw ''
+      Use of the "SEGGER JLink Software and Documentation pack" requires the
+      acceptance of the following licenses:
+
+        - SEGGER Downloads Terms of Use [1]
+        - SEGGER Software Licensing [2]
+
+      You can express acceptance by setting acceptLicense to true in your
+      configuration. Note that this is not a free license so it requires allowing
+      unfree licenses as well.
+
+      configuration.nix:
+        nixpkgs.config.allowUnfree = true;
+        nixpkgs.config.segger-jlink.acceptLicense = true;
+
+      config.nix:
+        allowUnfree = true;
+        segger-jlink.acceptLicense = true;
+
+      [1]: ${url}
+      [2]: https://www.segger.com/purchase/licensing/
+    '';
+      fetchurl {
+        inherit url;
+        inherit (platform) hash;
+        curlOpts = "--data accept_license_agreement=accepted";
+      };
+
+  qt4-bundled = stdenv.mkDerivation {
+    pname = "segger-jlink-qt4";
+    inherit src version;
+
+    nativeBuildInputs = [
+      autoPatchelfHook
+    ];
+
+    buildInputs = [
+      stdenv.cc.cc.lib
+      fontconfig
+      xorg.libXrandr
+      xorg.libXfixes
+      xorg.libXcursor
+      xorg.libSM
+      xorg.libICE
+      xorg.libX11
+    ];
+
+    dontConfigure = true;
+    dontBuild = true;
+
+    installPhase = ''
+      runHook preInstall
+
+      # Install libraries
+      mkdir -p $out/lib
+      mv libQt* $out/lib
+
+      runHook postInstall
+    '';
+
+    meta = with lib; {
+      description = "Bundled QT4 libraries for the J-Link Software and Documentation pack";
+      homepage = "https://www.segger.com/downloads/jlink/#J-LinkSoftwareAndDocumentationPack";
+      license = licenses.lgpl21;
+      maintainers = with maintainers; [ stargate01 ];
+      knownVulnerabilities = [
+        "This bundled version of Qt 4 has reached its end of life after 2015. See https://github.com/NixOS/nixpkgs/pull/174634"
+        "CVE-2023-43114"
+        "CVE-2023-38197"
+        "CVE-2023-37369"
+        "CVE-2023-34410"
+        "CVE-2023-32763"
+        "CVE-2023-32762"
+        "CVE-2023-32573"
+        "CVE-2022-25634"
+        "CVE-2020-17507"
+        "CVE-2020-0570"
+        "CVE-2018-21035"
+        "CVE-2018-19873"
+        "CVE-2018-19871"
+        "CVE-2018-19870"
+        "CVE-2018-19869"
+        "CVE-2015-1290"
+        "CVE-2014-0190"
+        "CVE-2013-0254"
+        "CVE-2012-6093"
+        "CVE-2012-5624"
+        "CVE-2009-2700"
+      ];
+    };
+  };
+
+in stdenv.mkDerivation {
+  pname = "segger-jlink";
+  inherit src version;
+
+  nativeBuildInputs = [
+    autoPatchelfHook
+    copyDesktopItems
+  ];
+
+  buildInputs = [
+    qt4-bundled
+  ];
+
+  # Udev is loaded late at runtime
+  appendRunpaths = [
+    "${udev}/lib"
+  ];
+
+  dontConfigure = true;
+  dontBuild = true;
+
+  desktopItems = map (entry:
+    (makeDesktopItem {
+      name = entry;
+      exec = entry;
+      icon = "applications-utilities";
+      desktopName = entry;
+      genericName = "SEGGER ${entry}";
+      categories = [ "Development" ];
+      type = "Application";
+      terminal = false;
+      startupNotify = false;
+    })
+  ) [
+    "JFlash"
+    "JFlashLite"
+    "JFlashSPI"
+    "JLinkConfig"
+    "JLinkGDBServer"
+    "JLinkLicenseManager"
+    "JLinkRTTViewer"
+    "JLinkRegistration"
+    "JLinkRemoteServer"
+    "JLinkSWOViewer"
+    "JLinkUSBWebServer"
+    "JMem"
+  ];
+
+  installPhase = ''
+    runHook preInstall
+
+    # Install binaries and runtime files into /opt/
+    mkdir -p $out/opt
+    mv J* ETC GDBServer Firmwares $out/opt
+
+    # Link executables into /bin/
+    mkdir -p $out/bin
+    for binr in $out/opt/*Exe; do
+      binrlink=''${binr#"$out/opt/"}
+      ln -s $binr $out/bin/$binrlink
+      # Create additional symlinks without "Exe" suffix
+      binrlink=''${binrlink/%Exe}
+      ln -s $binr $out/bin/$binrlink
+    done
+
+    # Copy special alias symlinks
+    for slink in $(find $out/opt/. -type l); do
+      cp -P -n $slink $out/bin || true
+      rm $slink
+    done
+
+    # Install libraries
+    install -Dm444 libjlinkarm.so* -t $out/lib
+    for libr in $out/lib/libjlinkarm.*; do
+      ln -s $libr $out/opt
+    done
+
+    # Install docs and examples
+    mkdir -p $out/share
+    mv Doc $out/share/docs
+    mv Samples $out/share/examples
+
+    # Install udev rules
+    install -Dm444 99-jlink.rules -t $out/lib/udev/rules.d/
+
+    runHook postInstall
+  '';
+
+  meta = with lib; {
+    description = "J-Link Software and Documentation pack";
+    homepage = "https://www.segger.com/downloads/jlink/#J-LinkSoftwareAndDocumentationPack";
+    license = licenses.unfree;
+    platforms = attrNames supported;
+    maintainers = with maintainers; [ FlorianFranzen stargate01 ];
+  };
+}