diff --git a/flake.lock b/flake.lock
index 609c2d338..df3483f97 100644
--- a/flake.lock
+++ b/flake.lock
@@ -17,15 +17,16 @@
     },
     "flake-utils": {
       "locked": {
-        "lastModified": 1605370193,
-        "narHash": "sha256-YyMTf3URDL/otKdKgtoMChu4vfVL3vCMkRqpGifhUn0=",
+        "lastModified": 1608663846,
+        "narHash": "sha256-YOAXeoNLW0IubQ6AZLGuSj5kAD5n4DYXLYReLtyds1A=",
         "owner": "numtide",
         "repo": "flake-utils",
-        "rev": "5021eac20303a61fafe17224c087f5519baed54d",
+        "rev": "a68df93a37cd5137ac22ffeb2d8a03acf253cc24",
         "type": "github"
       },
       "original": {
         "owner": "numtide",
+        "ref": "flatten-tree-system",
         "repo": "flake-utils",
         "type": "github"
       }
@@ -51,11 +52,11 @@
     },
     "master": {
       "locked": {
-        "lastModified": 1607981906,
-        "narHash": "sha256-tFuNBkK0F5km1Lq5ulLgLVm3BvOvI7t4k4Y7xTIo3QE=",
+        "lastModified": 1610405177,
+        "narHash": "sha256-Y4GRoQpN5N2YM3qtbzrcJee/dBhJqPSSK+2290H4604=",
         "owner": "NixOS",
         "repo": "nixpkgs",
-        "rev": "dd95aa337e23a8a48fe82f0f7b1cced8bc03e379",
+        "rev": "f0a7fce6ee72e574c2406bf1cfd1741c8d2cd07e",
         "type": "github"
       },
       "original": {
diff --git a/hosts/niximg.nix b/hosts/nixISO.nix
similarity index 100%
rename from hosts/niximg.nix
rename to hosts/nixISO.nix
diff --git a/hosts/nixSD.nix b/hosts/nixSD.nix
new file mode 100644
index 000000000..d2da5e26f
--- /dev/null
+++ b/hosts/nixSD.nix
@@ -0,0 +1,17 @@
+{ lib, pkgs, config, modulesPath, ... }:
+{
+  imports = [
+    # passwd is nixos by default
+    ../users/nixos
+    # passwd is empty by default
+    ../users/root
+    (modulesPath + "/installer/cd-dvd/sd-image-aarch64-new-kernel.nix")
+  ];
+
+  hardware.enableRedistributableFirmware = lib.mkDefault true;
+  hardware.pulseaudio.enable = lib.mkDefault true;
+  sound.enable = lib.mkDefault true;
+
+  documentation.enable = false;
+  networking.wireless.enable = true;
+}
diff --git a/pkgs/override.nix b/pkgs/override.nix
index 154d6a427..60c35c50d 100644
--- a/pkgs/override.nix
+++ b/pkgs/override.nix
@@ -13,4 +13,5 @@ with pkgs;
   nixpkgs-fmt
   manix
   qutebrowser
+  ubootRaspberryPi3_64bit
 ]
diff --git a/shell.nix b/shell.nix
index 703a628d1..82d6efcaf 100644
--- a/shell.nix
+++ b/shell.nix
@@ -16,7 +16,7 @@ let
 
   flk = pkgs.writeShellScriptBin "flk" ''
     if [[ -z "$1" ]]; then
-      echo "Usage: $(basename "$0") [ iso | up | install {host} | {host} [switch|boot|test] ]"
+      echo "Usage: $(basename "$0") [ iso | sd | up | install {host} | {host} [switch|boot|test] ]"
     elif [[ "$1" == "up" ]]; then
       mkdir -p up
       hostname=$(hostname)
@@ -29,6 +29,8 @@ let
     git add -f hosts/up-$hostname.nix
     elif [[ "$1" == "iso" ]]; then
       nix build $DEVSHELL_ROOT#nixosConfigurations.niximg.${build}.isoImage "${"\${@:2}"}"
+          elif [[ "$1" == "sd" ]]; then
+      nix build $DEVSHELL_ROOT#.nixSD.${build}.sdImage "${"\${@:2}"}"
     elif [[ "$1" == "install" ]]; then
       sudo nixos-install --flake ".#$2" "${"\${@:3}"}"
     else