diff --git a/device/generic/br_overlay/common/etc/init.d/S99user b/device/generic/br_overlay/common/etc/init.d/S99user
index 528e71afe..597781bc8 100755
--- a/device/generic/br_overlay/common/etc/init.d/S99user
+++ b/device/generic/br_overlay/common/etc/init.d/S99user
@@ -14,12 +14,22 @@ case "$1" in
         fi
 
         echo "Starting app..."
+
+        if [ -f $SYSTEMPATH/duo-init.sh ]; then
+                . $SYSTEMPATH/duo-init.sh &
+        fi
+
+        if [ -f $SYSTEMPATH/blink.sh ]; then
+                . $SYSTEMPATH/blink.sh &
+        fi
+
         if [ -f $USERDATAPATH/auto.sh ]; then
                 usleep 30000
                 . $USERDATAPATH/auto.sh &
-		exit 1
+                exit 1
         fi
-	if [ -f $SYSTEMPATH/auto.sh ]; then
+
+        if [ -f $SYSTEMPATH/auto.sh ]; then
                 usleep 30000
                 . $SYSTEMPATH/auto.sh &
         fi
diff --git a/device/milkv-duo256m-glibc-arm64-sd/overlay/mnt/system/blink.sh b/device/milkv-duo256m-glibc-arm64-sd/overlay/mnt/system/blink.sh
new file mode 100755
index 000000000..0670e77b6
--- /dev/null
+++ b/device/milkv-duo256m-glibc-arm64-sd/overlay/mnt/system/blink.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+LED_PIN=354
+
+LED_GPIO=/sys/class/gpio/gpio${LED_PIN}
+
+if test -d ${LED_GPIO}; then
+    echo "PIN ${LED_PIN} already exported"
+else
+    echo ${LED_PIN} > /sys/class/gpio/export
+fi
+
+echo out > ${LED_GPIO}/direction
+
+while true; do
+    echo 0 > ${LED_GPIO}/value
+    sleep 0.5
+    echo 1 > ${LED_GPIO}/value
+    sleep 0.5
+done
+
diff --git a/device/milkv-duo256m-glibc-arm64-sd/overlay/mnt/system/duo-init.sh b/device/milkv-duo256m-glibc-arm64-sd/overlay/mnt/system/duo-init.sh
new file mode 100755
index 000000000..a88ca4486
--- /dev/null
+++ b/device/milkv-duo256m-glibc-arm64-sd/overlay/mnt/system/duo-init.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Set Pin-29(GP22) to GPIO
+devmem 0x0502707c 32 0x111
+devmem 0x03001068 32 0x3
+
+# Set Pin-19(GP14) to GPIO
+duo-pinmux -w GP14/GP14 > /dev/null
+
+# Insmod PWM Module
+insmod /mnt/system/ko/cv181x_pwm.ko
+
diff --git a/device/milkv-duo256m-musl-riscv64-sd/overlay/mnt/system/blink.sh b/device/milkv-duo256m-musl-riscv64-sd/overlay/mnt/system/blink.sh
new file mode 100755
index 000000000..0670e77b6
--- /dev/null
+++ b/device/milkv-duo256m-musl-riscv64-sd/overlay/mnt/system/blink.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+LED_PIN=354
+
+LED_GPIO=/sys/class/gpio/gpio${LED_PIN}
+
+if test -d ${LED_GPIO}; then
+    echo "PIN ${LED_PIN} already exported"
+else
+    echo ${LED_PIN} > /sys/class/gpio/export
+fi
+
+echo out > ${LED_GPIO}/direction
+
+while true; do
+    echo 0 > ${LED_GPIO}/value
+    sleep 0.5
+    echo 1 > ${LED_GPIO}/value
+    sleep 0.5
+done
+
diff --git a/device/milkv-duo256m-musl-riscv64-sd/overlay/mnt/system/duo-init.sh b/device/milkv-duo256m-musl-riscv64-sd/overlay/mnt/system/duo-init.sh
new file mode 100755
index 000000000..a88ca4486
--- /dev/null
+++ b/device/milkv-duo256m-musl-riscv64-sd/overlay/mnt/system/duo-init.sh
@@ -0,0 +1,12 @@
+#!/bin/sh
+
+# Set Pin-29(GP22) to GPIO
+devmem 0x0502707c 32 0x111
+devmem 0x03001068 32 0x3
+
+# Set Pin-19(GP14) to GPIO
+duo-pinmux -w GP14/GP14 > /dev/null
+
+# Insmod PWM Module
+insmod /mnt/system/ko/cv181x_pwm.ko
+
diff --git a/device/milkv-duos-glibc-arm64-sd/overlay/mnt/system/blink.sh b/device/milkv-duos-glibc-arm64-sd/overlay/mnt/system/blink.sh
new file mode 100755
index 000000000..dfd5af12d
--- /dev/null
+++ b/device/milkv-duos-glibc-arm64-sd/overlay/mnt/system/blink.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+LED_PIN=509
+
+LED_GPIO=/sys/class/gpio/gpio${LED_PIN}
+
+if test -d ${LED_GPIO}; then
+    echo "PIN ${LED_PIN} already exported"
+else
+    echo ${LED_PIN} > /sys/class/gpio/export
+fi
+
+echo out > ${LED_GPIO}/direction
+
+while true; do
+    echo 0 > ${LED_GPIO}/value
+    sleep 0.5
+    echo 1 > ${LED_GPIO}/value
+    sleep 0.5
+done
+
diff --git a/device/milkv-duos-glibc-arm64-sd/overlay/mnt/system/duo-init.sh b/device/milkv-duos-glibc-arm64-sd/overlay/mnt/system/duo-init.sh
new file mode 100755
index 000000000..e474c024b
--- /dev/null
+++ b/device/milkv-duos-glibc-arm64-sd/overlay/mnt/system/duo-init.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+
+function set_gpio()
+{
+	local gpio_num=$1
+	local gpio_val=$2
+	local gpio_path="/sys/class/gpio/gpio${gpio_num}"
+
+	if test -d ${gpio_path}; then
+		echo "GPIO ${gpio_num} already exported" >> /tmp/gpio.log 2>&1
+	else
+		echo ${gpio_num} > /sys/class/gpio/export
+	fi
+
+	echo out > ${gpio_path}/direction
+	sleep 0.1
+	echo ${gpio_val} > ${gpio_path}/value
+}
+
+# Hardware V1.1
+gpio_b17=465
+set_gpio ${gpio_b17} 0
+
+# Insmod PWM Module
+insmod /mnt/system/ko/cv181x_pwm.ko
+
diff --git a/device/milkv-duos-musl-riscv64-sd/overlay/mnt/system/blink.sh b/device/milkv-duos-musl-riscv64-sd/overlay/mnt/system/blink.sh
new file mode 100755
index 000000000..dfd5af12d
--- /dev/null
+++ b/device/milkv-duos-musl-riscv64-sd/overlay/mnt/system/blink.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+LED_PIN=509
+
+LED_GPIO=/sys/class/gpio/gpio${LED_PIN}
+
+if test -d ${LED_GPIO}; then
+    echo "PIN ${LED_PIN} already exported"
+else
+    echo ${LED_PIN} > /sys/class/gpio/export
+fi
+
+echo out > ${LED_GPIO}/direction
+
+while true; do
+    echo 0 > ${LED_GPIO}/value
+    sleep 0.5
+    echo 1 > ${LED_GPIO}/value
+    sleep 0.5
+done
+
diff --git a/device/milkv-duos-musl-riscv64-sd/overlay/mnt/system/duo-init.sh b/device/milkv-duos-musl-riscv64-sd/overlay/mnt/system/duo-init.sh
new file mode 100755
index 000000000..e474c024b
--- /dev/null
+++ b/device/milkv-duos-musl-riscv64-sd/overlay/mnt/system/duo-init.sh
@@ -0,0 +1,26 @@
+#!/bin/sh
+
+function set_gpio()
+{
+	local gpio_num=$1
+	local gpio_val=$2
+	local gpio_path="/sys/class/gpio/gpio${gpio_num}"
+
+	if test -d ${gpio_path}; then
+		echo "GPIO ${gpio_num} already exported" >> /tmp/gpio.log 2>&1
+	else
+		echo ${gpio_num} > /sys/class/gpio/export
+	fi
+
+	echo out > ${gpio_path}/direction
+	sleep 0.1
+	echo ${gpio_val} > ${gpio_path}/value
+}
+
+# Hardware V1.1
+gpio_b17=465
+set_gpio ${gpio_b17} 0
+
+# Insmod PWM Module
+insmod /mnt/system/ko/cv181x_pwm.ko
+