diff --git a/config/cradio.keymap b/config/cradio.keymap
index e42f022..0e16d04 100644
--- a/config/cradio.keymap
+++ b/config/cradio.keymap
@@ -70,6 +70,18 @@
             layers = <6>;
             require-prior-idle-ms = <2000>;
         };
+
+        symbols {
+            bindings = <&sl 2>;
+            key-positions = <31 32>;
+            layers = <0 5 6 7 3>;
+        };
+
+        symbols_ext {
+            bindings = <&sl 3>;
+            key-positions = <31 32>;
+            layers = <2>;
+        };
     };
 
     macros {
@@ -123,15 +135,27 @@
         };
     };
 
+    behaviors {
+        mod_hold: mod_hold {
+            compatible = "zmk,behavior-hold-tap";
+            label = "MOD_HOLD";
+            bindings = <&mo>, <&sl>;
+
+            #binding-cells = <2>;
+            tapping-term-ms = <200>;
+            flavor = "tap-preferred";
+        };
+    };
+
     keymap {
         compatible = "zmk,keymap";
 
         dvorak {
             bindings = <
-&kp ENTER    &kp TAB  &kp BACKSPACE  &kp P  &kp Y         &kp F      &kp G  &kp C  &kp R  &kp L
-&kp A        &kp O    &kp E          &kp U  &kp I         &kp D      &kp H  &kp T  &kp N  &kp S
-&key_repeat  &kp Q    &kp J          &kp K  &kp X         &kp B      &kp M  &kp W  &kp V  &kp Z
-                                     &sl 1  &kp ESCAPE    &kp SPACE  &sl 2
+&kp ENTER    &kp TAB  &kp BACKSPACE  &kp P          &kp Y         &kp F      &kp G  &kp C  &kp R  &kp L
+&kp A        &kp O    &kp E          &kp U          &kp I         &kp D      &kp H  &kp T  &kp N  &kp S
+&key_repeat  &kp Q    &kp J          &kp K          &kp X         &kp B      &kp M  &kp W  &kp V  &kp Z
+                                     &mod_hold 1 1  &kp ESCAPE    &kp SPACE  &sl 2
             >;
 
             label = "dvorak";
@@ -194,10 +218,10 @@
 
         qwerty {
             bindings = <
-&kp Q  &kp W  &kp E  &kp R  &kp T         &kp Y      &kp U  &kp I          &kp O    &kp P
-&kp A  &kp S  &kp D  &kp F  &kp G         &kp H      &kp J  &kp K          &kp L    &key_repeat
-&kp Z  &kp X  &kp C  &kp V  &kp B         &kp N      &kp M  &kp BACKSPACE  &kp TAB  &kp ENTER
-                     &sl 1  &kp ESCAPE    &kp SPACE  &sl 2
+&kp Q  &kp W  &kp E  &kp R          &kp T         &kp Y      &kp U  &kp I          &kp O    &kp P
+&kp A  &kp S  &kp D  &kp F          &kp G         &kp H      &kp J  &kp K          &kp L    &key_repeat
+&kp Z  &kp X  &kp C  &kp V          &kp B         &kp N      &kp M  &kp BACKSPACE  &kp TAB  &kp ENTER
+                     &mod_hold 1 1  &kp ESCAPE    &kp SPACE  &sl 2
             >;
         };
 
diff --git a/update.sh b/update.sh
index 35ad472..31a1f3b 100755
--- a/update.sh
+++ b/update.sh
@@ -4,7 +4,7 @@ echo "put the nice!nano into bootloader, flashing in 5 seconds..."
 sleep 5
 echo "flashing..."
 
-unzip -o -q $(find .tmp -name *.zip) -d .tmp/
+unzip -o -q $(find .tmp -name "*.zip") -d .tmp/
 
 mkdir .tmp/nicenano/
 sudo mount /dev/sda .tmp/nicenano/