diff --git a/README.md b/README.md
index 27db73c..acbb626 100755
--- a/README.md
+++ b/README.md
@@ -10,7 +10,9 @@ Web Site: [cornedeon.ru](https://cornedeon.ru)
 
 Prepare build environvent (devcontainer) as described in ZMK docs.
 
-~& cd zmk-workspace/zmk && git clone https://github.com/alko-kbd/zmk-cornedeon54 && cd ..
+~# cd zmk-workspace/zmk
+
+~zmk-workspace# git clone https://github.com/alko-kbd/zmk-cornedeon54
 
 ~zmk-workspace$ devcontainer exec --workspace-folder ./zmk /bin/bash
 
diff --git a/boards/shields/cornedeon54/Kconfig.defconfig b/boards/shields/cornedeon54/Kconfig.defconfig
index 8412dbc..f3bd8ff 100644
--- a/boards/shields/cornedeon54/Kconfig.defconfig
+++ b/boards/shields/cornedeon54/Kconfig.defconfig
@@ -4,9 +4,6 @@ config ZMK_SPLIT
 
 if SHIELD_CORNEDEON54_DONGLE || SHIELD_CORNEDEON54_LEFT_CENTRAL
 
-config ZMK_SPLIT_BLE_CENTRAL_PERIPHERALS
-    default 2
-
 config ZMK_SPLIT_ROLE_CENTRAL
     default y
 
@@ -19,4 +16,14 @@ config BT_MAX_PAIRED
 config ZMK_USB
     default y
 
+if SHIELD_CORNEDEON54_DONGLE
+config ZMK_SPLIT_BLE_CENTRAL_PERIPHERALS
+    default 2
+endif
+
+if SHIELD_CORNEDEON54_LEFT_CENTRAL
+config ZMK_SPLIT_BLE_CENTRAL_PERIPHERALS
+    default 1
+endif
+
 endif  # CENTRAL
diff --git a/build.sh b/build.sh
index a4403ed..b03a166 100755
--- a/build.sh
+++ b/build.sh
@@ -2,6 +2,7 @@
 
 # Keyboard name
 KEYBOARD="cornedeon54"
+BOARD="nice_nano"
 
 # Paths
 CONFIG_DIR="/workspaces/zmk/zmk-${KEYBOARD}/config"
@@ -18,7 +19,7 @@ SHIELD="${KEYBOARD}_$1"
 
 echo "=== Build: ${SHIELD} ==="
 
-west build -s app -p -b nice_nano -S studio-rpc-usb-uart -- \
+west build -s app -p -b ${BOARD} -S studio-rpc-usb-uart -- \
   -DSHIELD="$SHIELD" \
   -DZMK_CONFIG="$CONFIG_DIR" \
   -DZMK_EXTRA_MODULES="$MODULES_DIR" \
diff --git a/config/cornedeon54.keymap b/config/cornedeon54.keymap
index 90ac188..2963402 100644
--- a/config/cornedeon54.keymap
+++ b/config/cornedeon54.keymap
@@ -24,11 +24,11 @@
             // |       |      |     | LALT | MO(1) | SPC |   | SPC | MO(2) | GUI |     |      |       |
 
             bindings = <
-&kp ESC   &kp N1  &kp N2  &kp N3   &kp N4 &kp N5       &kp N6    &kp N7  &kp N8  &kp N9  &kp N0      &kp BSPC
-&kp TAB   &kp Q   &kp W   &kp E    &kp R  &mt GRAVE T  &kp Y     &kp U   &kp I   &kp O   &mt LBKT P  &kp BSLH
-&kp LSHFT &kp A   &kp S   &kp D    &kp F  &kp G        &kp H     &kp J   &kp K   &kp L   &kp SEMI    &kp SQT
-&kp LCTRL &kp Z   &kp X   &kp C    &kp V  &kp B        &kp N     &mt RBKT M  &kp COMMA  &kp DOT  &kp FSLH  &kp RSHFT
-                          &kp LALT &mo 1  &kp SPACE    &kp SPACE &mo 2   &kp RGUI
+&kp ESC   &kp N1  &kp N2  &kp N3   &kp N4 &kp N5        &kp N6    &kp N7  &kp N8  &kp N9  &kp N0      &kp BSPC
+&kp TAB   &kp Q   &kp W   &kp E    &kp R  &mt GRAVE T   &kp Y     &kp U   &kp I   &kp O   &mt LBKT P  &kp BSLH
+&kp LSHFT &kp A   &kp S   &kp D    &kp F  &kp G         &kp H     &kp J   &kp K   &kp L   &kp SEMI    &kp SQT
+&kp LCTRL &kp Z   &kp X   &kp C    &kp V  &kp B         &kp N     &mt RBKT M  &kp COMMA  &kp DOT  &kp FSLH  &kp RSHFT
+                          &kp LALT &mo 1  &kp SPACE     &kp SPACE &mo 2   &kp RGUI
             >;
         };
 
@@ -43,11 +43,11 @@
             // |       |      | END | ALT |     | RET |      | RET |     | GUI |     |     |       |
 
             bindings = <
-&kp F1   &kp F2  &kp F3  &kp F4  &kp F5  &kp F6  &kp F7  &kp F8  &kp F9  &kp F10  &kp F11  &kp F12
-&kp TAB  &kp TILDE  &kp LPAR  &kp RPAR  &kp STAR  &kp FSLH  &kp N7  &kp N8  &kp N9  &kp N0  &kp INS  &kp DEL
-&kp TAB  &none  &kp LBKT  &kp RBKT  &kp PLUS  &kp MINUS  &kp N4  &kp N5  &kp N6  &kp DOT  &kp FSLH  &kp BSLH
-&kp LSHFT  &none  &kp LBRC  &kp RBRC  &kp LT  &kp GT  &kp N1  &kp N2  &kp N3  &kp EQUAL  &kp UNDER  &kp RSHFT
-                          &kp LALT  &trans  &kp RET  &kp RET  &trans  &kp RGUI
+&kp F1     &kp F2     &kp F3    &kp F4    &kp F5    &kp F6      &kp F7   &kp F8  &kp F9  &kp F10  &kp F11  &kp F12
+&kp TAB    &kp TILDE  &kp LPAR  &kp RPAR  &kp STAR  &kp FSLH    &kp N7   &kp N8  &kp N9  &kp N0  &kp INS  &kp DEL
+&kp TAB    &none      &kp LBKT  &kp RBKT  &kp PLUS  &kp MINUS   &kp N4   &kp N5  &kp N6  &kp DOT  &kp FSLH  &kp BSLH
+&kp LSHFT  &none      &kp LBRC  &kp RBRC  &kp LT    &kp GT      &kp N1   &kp N2  &kp N3  &kp EQUAL  &kp UNDER  &kp RSHFT
+                                &kp LALT  &trans    &kp RET     &kp RET  &trans  &kp RGUI
             >;
         };
 
@@ -62,11 +62,11 @@
             // |       |      |      | ALT |     | RET |      | RET |      | CAPS |      |       |       |
 
             bindings = <
-&none  &none  &none  &none  &none  &none  &none      &none  &none  &none  &none  &none
-&none  &none  &none  &none  &kp UP &none  &none      &none  &none  &none &kp PSCRN  &kp PAUSE_BREAK
-&none  &none  &none  &kp LEFT  &none  &kp RIGHT      &none  &none  &none  &none &kp KP_NUM  &kp SLCK
-&kp LSHFT  &none  &none  &kp DOWN  &none  &none      &none  &none  &none &kp K_MENU  &kp RSHFT
-                         &kp LALT  &trans  &kp RET   &kp RET  &trans  &kp CAPS
+&none     &none  &none  &none     &none     &none          &none    &none   &none   &none  &none  &none
+&none     &none  &none  &none     &kp UP    &none          &none    &none   &none   &none &kp PSCRN  &kp PAUSE_BREAK
+&none     &none  &none  &kp LEFT  &none     &kp RIGHT      &none    &none   &none   &none &kp KP_NUM  &kp SLCK
+&kp LSHFT &none  &none  &none     &kp DOWN  &none          &none    &none   &none   &none  &kp K_MENU  &kp RSHFT
+                        &kp LALT  &trans    &kp RET        &kp RET  &trans  &kp CAPS
             >;
         };
 
diff --git a/firmware/zmk_cornedeon54_left_central.uf2 b/firmware/zmk_cornedeon54_left_central.uf2
index 433a2cb..0282798 100644
Binary files a/firmware/zmk_cornedeon54_left_central.uf2 and b/firmware/zmk_cornedeon54_left_central.uf2 differ