diff --git a/11_write_factorytest_by_esptool.sh b/11_write_factorytest_by_esptool.sh
index 4156425..f4ec148 100755
--- a/11_write_factorytest_by_esptool.sh
+++ b/11_write_factorytest_by_esptool.sh
@@ -1,79 +1,16 @@
 #!/bin/bash
 
-# This script uploads the factory test firmware to an ESP device using esptool.py.
+source ./lib.sh
 
-# Check if esptool.py is installed
-if command -v esptool.py &> /dev/null
-then
-   BUILD_TOOL="esptool.py"
-else
-   if ! command -v py &> /dev/null
-   then
-     echo "esptool.py nor py could not be found. Please install it first."
-     exit 1
-   fi
-   BUILD_TOOL="py -m esptool"
-fi
+# Get esptool command
+BUILD_TOOL=$(lib_get_esptool_command)
 
 # Find port - Cross-platform detection
-PORT=""
-# Detect OS and find appropriate port
-OS_TYPE=$(uname -s)
-case "$OS_TYPE" in
-    "Darwin")  # macOS
-        echo "Detected macOS"
-        # Try common macOS patterns
-        for pattern in "/dev/cu.usbserial*" "/dev/cu.usbmodem*" "/dev/cu.wchusbserial*"; do
-            PORT=$(ls $pattern 2>/dev/null | head -n 1)
-            if [ ! -z "$PORT" ]; then
-                break
-            fi
-        done
-        ;;
-    "Linux")   # Linux
-        echo "Detected Linux"
-        # Try common Linux patterns
-        for pattern in "/dev/ttyUSB*" "/dev/ttyACM*"; do
-            PORT=$(ls $pattern 2>/dev/null | head -n 1)
-            if [ ! -z "$PORT" ]; then
-                break
-            fi
-        done
-        ;;
-    "CYGWIN"*|"MINGW"*|"MSYS"*)  # Windows (Git Bash, Cygwin, etc.)
-        echo "Detected Windows"
-        # For Windows, try to detect COM ports
-        # Note: This works in Git Bash or similar environments
-        for num in {3..20}; do
-            if [ -e "/dev/ttyS$((num-1))" ]; then
-                PORT="COM$num"
-                break
-            fi
-        done
-        # Alternative: use mode command if available
-        if [ -z "$PORT" ] && command -v mode.com &> /dev/null; then
-            PORT=$(mode.com 2>/dev/null | grep -o "COM[0-9]*" | head -n 1)
-        fi
-        ;;
-    *)
-        echo "Unknown OS: $OS_TYPE"
-        echo "Please manually specify the port using PORT environment variable"
-        echo "Example: PORT=/dev/ttyUSB0 $0"
-        ;;
-esac
+PORT=$(lib_detect_esptool_port)
 
 # Check if PORT is set, otherwise prompt user
 if [ -z "$PORT" ]; then
-    echo "No ESP device found automatically."
-    echo "Please connect your ESP device and ensure drivers are installed."
-    echo "Common ports:"
-    echo "  Linux:   /dev/ttyUSB0, /dev/ttyACM0"
-    echo "  macOS:   /dev/cu.usbserial*, /dev/cu.usbmodem*"
-    echo "  Windows: COM3, COM4, etc."
-    echo ""
-    echo "You can also manually specify the port:"
-    echo "  PORT=/dev/ttyUSB0 $0"
-    exit 1
+    lib_no_esp_device_message_and_exit
 fi
 
 echo "Using port: $PORT"
@@ -82,7 +19,6 @@
 BUILD_PATH="FactoryTest/build/esp32.esp32.m5stack_stickc_plus2"
 BOOTLOADER_PATH="$BUILD_PATH/FactoryTest.ino.bootloader.bin"
 PARTITIONS_PATH="$BUILD_PATH/FactoryTest.ino.partitions.bin"
-BOOT_APP0_PATH="$BUILD_PATH/boot_app0.bin"
 FIRMWARE_PATH="$BUILD_PATH/FactoryTest.ino.bin"
 
 # Check if all required files exist
@@ -94,10 +30,6 @@
     echo "Partitions file not found at $PARTITIONS_PATH"
     exit 1
 fi
-# if [ ! -f "$BOOT_APP0_PATH" ]; then
-#     echo "Boot app0 file not found at $BOOT_APP0_PATH"
-#     exit 1
-# fi
 if [ ! -f "$FIRMWARE_PATH" ]; then
     echo "Firmware file not found at $FIRMWARE_PATH"
     exit 1
@@ -106,12 +38,12 @@
 echo "Flashing complete ESP32 firmware..."
 echo "Bootloader: $BOOTLOADER_PATH"
 echo "Partitions: $PARTITIONS_PATH"
-echo "Boot app0: $BOOT_APP0_PATH"
 echo "Main firmware: $FIRMWARE_PATH"
 
 # Upload the complete firmware using esptool.py
 $BUILD_TOOL --chip esp32 --port "$PORT" --baud 460800 write_flash -z \
     0x1000 "$BOOTLOADER_PATH" \
     0x8000 "$PARTITIONS_PATH" \
-    0x10000 "$FIRMWARE_PATH" 
-#    0xe000 "$BOOT_APP0_PATH" \
+    0x10000 "$FIRMWARE_PATH"
+ 
+echo "Flashing completed."
\ No newline at end of file
diff --git a/22_write_byhash_esptool.sh b/22_write_byhash_esptool.sh
index bf41eca..e76e3c1 100755
--- a/22_write_byhash_esptool.sh
+++ b/22_write_byhash_esptool.sh
@@ -1,74 +1,15 @@
 #!/bin/bash
 
-# This script uploads the factory test firmware to an ESP device using esptool.py.
+source ./lib.sh
 
-# Check if esptool.py is installed
-if ! command -v esptool.py &> /dev/null
-then
-    echo "esptool.py could not be found. Please install it first."
-    exit 1
-fi
+# Get esptool command
+BUILD_TOOL=$(lib_get_esptool_command)
 
 # Find port - Cross-platform detection
-PORT=""
+PORT=$(lib_detect_esptool_port)
 
-# Detect OS and find appropriate port
-OS_TYPE=$(uname -s)
-case "$OS_TYPE" in
-    "Darwin")  # macOS
-        echo "Detected macOS"
-        # Try common macOS patterns
-        for pattern in "/dev/cu.usbserial*" "/dev/cu.usbmodem*" "/dev/cu.wchusbserial*"; do
-            PORT=$(ls $pattern 2>/dev/null | head -n 1)
-            if [ ! -z "$PORT" ]; then
-                break
-            fi
-        done
-        ;;
-    "Linux")   # Linux
-        echo "Detected Linux"
-        # Try common Linux patterns
-        for pattern in "/dev/ttyUSB*" "/dev/ttyACM*"; do
-            PORT=$(ls $pattern 2>/dev/null | head -n 1)
-            if [ ! -z "$PORT" ]; then
-                break
-            fi
-        done
-        ;;
-    "CYGWIN"*|"MINGW"*|"MSYS"*)  # Windows (Git Bash, Cygwin, etc.)
-        echo "Detected Windows"
-        # For Windows, try to detect COM ports
-        # Note: This works in Git Bash or similar environments
-        for num in {3..20}; do
-            if [ -e "/dev/ttyS$((num-1))" ]; then
-                PORT="COM$num"
-                break
-            fi
-        done
-        # Alternative: use mode command if available
-        if [ -z "$PORT" ] && command -v mode.com &> /dev/null; then
-            PORT=$(mode.com 2>/dev/null | grep -o "COM[0-9]*" | head -n 1)
-        fi
-        ;;
-    *)
-        echo "Unknown OS: $OS_TYPE"
-        echo "Please manually specify the port using PORT environment variable"
-        echo "Example: PORT=/dev/ttyUSB0 $0"
-        ;;
-esac
-
-# Check if PORT is set, otherwise prompt user
 if [ -z "$PORT" ]; then
-    echo "No ESP device found automatically."
-    echo "Please connect your ESP device and ensure drivers are installed."
-    echo "Common ports:"
-    echo "  Linux:   /dev/ttyUSB0, /dev/ttyACM0"
-    echo "  macOS:   /dev/cu.usbserial*, /dev/cu.usbmodem*"
-    echo "  Windows: COM3, COM4, etc."
-    echo ""
-    echo "You can also manually specify the port:"
-    echo "  PORT=/dev/ttyUSB0 $0"
-    exit 1
+    lib_no_esp_device_message_and_exit
 fi
 
 echo "Using port: $PORT"
@@ -99,7 +40,9 @@
 echo "Main firmware: $FIRMWARE_PATH"
 
 # Upload the complete firmware using esptool.py
-esptool.py --chip esp32 --port "$PORT" --baud 460800 write_flash -z \
+$BUILD_TOOL --chip esp32 --port "$PORT" --baud 460800 write_flash -z \
     0x1000 "$BOOTLOADER_PATH" \
     0x8000 "$PARTITIONS_PATH" \
     0x10000 "$FIRMWARE_PATH" 
+
+echo "Flashing completed."
\ No newline at end of file
diff --git a/33_write_latest_esptool.sh b/33_write_latest_esptool.sh
index e12985a..12c3d59 100755
--- a/33_write_latest_esptool.sh
+++ b/33_write_latest_esptool.sh
@@ -1,74 +1,16 @@
 #!/bin/bash
 
-# This script uploads the factory test firmware to an ESP device using esptool.py.
+source ./lib.sh
 
-# Check if esptool.py is installed
-if ! command -v esptool.py &> /dev/null
-then
-    echo "esptool.py could not be found. Please install it first."
-    exit 1
-fi
+# Get esptool command
+BUILD_TOOL=$(lib_get_esptool_command)
 
 # Find port - Cross-platform detection
-PORT=""
-
-# Detect OS and find appropriate port
-OS_TYPE=$(uname -s)
-case "$OS_TYPE" in
-    "Darwin")  # macOS
-        echo "Detected macOS"
-        # Try common macOS patterns
-        for pattern in "/dev/cu.usbserial*" "/dev/cu.usbmodem*" "/dev/cu.wchusbserial*"; do
-            PORT=$(ls $pattern 2>/dev/null | head -n 1)
-            if [ ! -z "$PORT" ]; then
-                break
-            fi
-        done
-        ;;
-    "Linux")   # Linux
-        echo "Detected Linux"
-        # Try common Linux patterns
-        for pattern in "/dev/ttyUSB*" "/dev/ttyACM*"; do
-            PORT=$(ls $pattern 2>/dev/null | head -n 1)
-            if [ ! -z "$PORT" ]; then
-                break
-            fi
-        done
-        ;;
-    "CYGWIN"*|"MINGW"*|"MSYS"*)  # Windows (Git Bash, Cygwin, etc.)
-        echo "Detected Windows"
-        # For Windows, try to detect COM ports
-        # Note: This works in Git Bash or similar environments
-        for num in {3..20}; do
-            if [ -e "/dev/ttyS$((num-1))" ]; then
-                PORT="COM$num"
-                break
-            fi
-        done
-        # Alternative: use mode command if available
-        if [ -z "$PORT" ] && command -v mode.com &> /dev/null; then
-            PORT=$(mode.com 2>/dev/null | grep -o "COM[0-9]*" | head -n 1)
-        fi
-        ;;
-    *)
-        echo "Unknown OS: $OS_TYPE"
-        echo "Please manually specify the port using PORT environment variable"
-        echo "Example: PORT=/dev/ttyUSB0 $0"
-        ;;
-esac
+PORT=$(lib_detect_esptool_port)
 
 # Check if PORT is set, otherwise prompt user
 if [ -z "$PORT" ]; then
-    echo "No ESP device found automatically."
-    echo "Please connect your ESP device and ensure drivers are installed."
-    echo "Common ports:"
-    echo "  Linux:   /dev/ttyUSB0, /dev/ttyACM0"
-    echo "  macOS:   /dev/cu.usbserial*, /dev/cu.usbmodem*"
-    echo "  Windows: COM3, COM4, etc."
-    echo ""
-    echo "You can also manually specify the port:"
-    echo "  PORT=/dev/ttyUSB0 $0"
-    exit 1
+    lib_no_esp_device_message_and_exit
 fi
 
 echo "Using port: $PORT"
@@ -99,7 +41,9 @@
 echo "Main firmware: $FIRMWARE_PATH"
 
 # Upload the complete firmware using esptool.py
-esptool.py --chip esp32 --port "$PORT" --baud 460800 write_flash -z \
+$BUILD_TOOL --chip esp32 --port "$PORT" --baud 460800 write_flash -z \
     0x1000 "$BOOTLOADER_PATH" \
     0x8000 "$PARTITIONS_PATH" \
     0x10000 "$FIRMWARE_PATH" 
+
+echo "Flashing completed."
\ No newline at end of file
diff --git a/lib.sh b/lib.sh
new file mode 100644
index 0000000..5090f6e
--- /dev/null
+++ b/lib.sh
@@ -0,0 +1,81 @@
+#!/usr/bin/env bash
+
+# 
+lib_get_esptool_command() {
+    if command -v esptool.py &> /dev/null
+    then
+        echo "esptool.py"
+    else
+    if ! command -v py &> /dev/null
+        then
+            echo "esptool.py nor py could not be found. Please install it first."
+            exit 1
+        fi
+        # check if esptool is installed as a module
+        if py -m esptool --help &> /dev/null
+        then
+            echo "py -m esptool"
+        else
+            echo "install esptool module for python first."
+            py -m pip install esptool
+        fi
+        echo "py -m esptool"
+    fi
+}
+
+lib_detect_esptool_port() {
+    local PORT=""
+    local OS_TYPE=$(uname -s)
+    case "$OS_TYPE" in
+        "Darwin")  # macOS
+            # Try common macOS patterns
+            for pattern in "/dev/cu.usbserial*" "/dev/cu.usbmodem*" "/dev/cu.wchusbserial*"; do
+                PORT=$(ls $pattern 2>/dev/null | head -n 1)
+                if [ ! -z "$PORT" ]; then
+                    break
+                fi
+            done
+            ;;
+        "Linux")   # Linux
+            # Try common Linux patterns
+            for pattern in "/dev/ttyUSB*" "/dev/ttyACM*"; do
+                PORT=$(ls $pattern 2>/dev/null | head -n 1)
+                if [ ! -z "$PORT" ]; then
+                    break
+                fi
+            done
+            ;;
+        "CYGWIN"*|"MINGW"*|"MSYS"*)  # Windows (Git Bash, Cygwin, etc.)
+            # For Windows, try to detect COM ports
+            # Note: This works in Git Bash or similar environments
+            for num in {3..20}; do
+                if [ -e "/dev/ttyS$((num-1))" ]; then
+                    PORT="COM$num"
+                    break
+                fi
+            done
+            # Alternative: use mode command if available
+            if [ -z "$PORT" ] && command -v mode.com &> /dev/null; then
+                PORT=$(mode.com 2>/dev/null | grep -o "COM[0-9]*" | head -n 1)
+            fi
+            ;;
+        *)
+            echo "Unknown OS: $OS_TYPE"
+            echo "Please manually specify the port using PORT environment variable"
+            echo "Example: PORT=/dev/ttyUSB0 $0"
+            ;;
+    esac
+
+    echo "$PORT"
+}
+
+lib_no_esp_device_message_and_exit(){
+    echo "No ESP device found automatically."
+    echo "Please connect your ESP device and ensure drivers are installed."
+    echo "Common ports:"
+    echo "  Linux:   /dev/ttyUSB0, /dev/ttyACM0"
+    echo "  macOS:   /dev/cu.usbserial*, /dev/cu.usbmodem*"
+    echo "  Windows: COM3, COM4, etc."
+    echo "エラー：デバイスが接続されていない？"
+    exit 1
+}
\ No newline at end of file