diff --git a/examples/Modules/Base_PoE/LAN_W5500/WebServer/WebServer.ino b/examples/Modules/Base_PoE/LAN_W5500/WebServer/WebServer.ino
index 54c1a294..6714424e 100644
--- a/examples/Modules/Base_PoE/LAN_W5500/WebServer/WebServer.ino
+++ b/examples/Modules/Base_PoE/LAN_W5500/WebServer/WebServer.ino
@@ -1,14 +1,6 @@
-/*
-  Before compile this example, you have to change line 28 of the ESP32 core's
-  Server.h from: "virtual void begin(uint16_t port=0) =0;" To: "virtual void
-  begin() =0;" But that will break anything that uses the ESP32 WiFi library's
-  WebServer class.
-  Reference link:
-  https://community.m5stack.com/topic/3068/lan-module-w5500-with-poe-compilation-error
-*/
 #include <M5Stack.h>
 #include <SPI.h>
-#include <Ethernet.h>
+#include <M5_Ethernet.h>
 #define SCK  18
 #define MISO 19
 #define MOSI 23
diff --git a/examples/Modules/LAN_W5500/Ethernet2.zip b/examples/Modules/LAN_W5500/Ethernet2.zip
deleted file mode 100644
index d81c3cc3..00000000
Binary files a/examples/Modules/LAN_W5500/Ethernet2.zip and /dev/null differ
diff --git a/examples/Modules/LAN_W5500/WebServer/WebServer.ino b/examples/Modules/LAN_W5500/WebServer/WebServer.ino
index 54c1a294..6714424e 100644
--- a/examples/Modules/LAN_W5500/WebServer/WebServer.ino
+++ b/examples/Modules/LAN_W5500/WebServer/WebServer.ino
@@ -1,14 +1,6 @@
-/*
-  Before compile this example, you have to change line 28 of the ESP32 core's
-  Server.h from: "virtual void begin(uint16_t port=0) =0;" To: "virtual void
-  begin() =0;" But that will break anything that uses the ESP32 WiFi library's
-  WebServer class.
-  Reference link:
-  https://community.m5stack.com/topic/3068/lan-module-w5500-with-poe-compilation-error
-*/
 #include <M5Stack.h>
 #include <SPI.h>
-#include <Ethernet.h>
+#include <M5_Ethernet.h>
 #define SCK  18
 #define MISO 19
 #define MOSI 23
diff --git a/examples/Unit/M5BIT/M5BIT.ino b/examples/Unit/M5BIT/M5BIT.ino
deleted file mode 100644
index eee2980c..00000000
--- a/examples/Unit/M5BIT/M5BIT.ino
+++ /dev/null
@@ -1,76 +0,0 @@
-/*
-    Description: Use UART communication to control the LED matrix on microbit.
-*/
-#include <M5Stack.h>
-
-#define WIDTH       320
-#define HEIGHT      240
-#define BLOCK_SIZE  40
-#define UNIT_WIDTH  5
-#define UNIT_HEIGHT 5
-#define UNIT_SIZE   25
-#define GETX(i)     ((i) % (5))
-#define GETY(i)     ((i) / (5))
-int world[UNIT_SIZE];
-int i;
-
-void setup() {
-    M5.begin();
-    M5.Power.begin();
-    Wire.begin();
-    if (digitalRead(BUTTON_A_PIN) == 0) {
-        Serial.println("Will load menu binary");
-        updateFromFS(SD);
-        ESP.restart();
-    }
-    Serial2.begin(115200, SERIAL_8N1, 16, 17);
-    M5.Lcd.fillScreen(BLACK);
-    M5.Lcd.setTextSize(2);
-    M5.Lcd.setCursor(35, 220);
-    M5.Lcd.println("  <       *       >");
-    for (i = 0; i < UNIT_SIZE; i++) {
-        world[i] = 0;
-    }
-    i = UNIT_SIZE / 2;
-}
-
-void loop() {
-    M5.update();
-    int x = GETX(i) + 1;
-    int y = GETY(i);
-    if (world[i] > 0)
-        M5.Lcd.fillRect(x * BLOCK_SIZE + 1, y * BLOCK_SIZE + 1, BLOCK_SIZE - 2,
-                        BLOCK_SIZE - 2, LIGHTGREY);
-    else
-        M5.Lcd.fillRect(x * BLOCK_SIZE + 1, y * BLOCK_SIZE + 1, BLOCK_SIZE - 2,
-                        BLOCK_SIZE - 2, BLUE);
-    if (M5.BtnC.wasPressed()) {
-        if (world[i] > 0)
-            M5.Lcd.fillRect(x * BLOCK_SIZE + 1, y * BLOCK_SIZE + 1,
-                            BLOCK_SIZE - 2, BLOCK_SIZE - 2, WHITE);
-        else
-            M5.Lcd.fillRect(x * BLOCK_SIZE, y * BLOCK_SIZE, BLOCK_SIZE,
-                            BLOCK_SIZE, BLACK);
-        ++i;
-        if (i >= UNIT_SIZE) i = 0;
-    }
-    if (M5.BtnA.wasPressed()) {
-        if (world[i] > 0)
-            M5.Lcd.fillRect(x * BLOCK_SIZE + 1, y * BLOCK_SIZE + 1,
-                            BLOCK_SIZE - 2, BLOCK_SIZE - 2, WHITE);
-        else
-            M5.Lcd.fillRect(x * BLOCK_SIZE, y * BLOCK_SIZE, BLOCK_SIZE,
-                            BLOCK_SIZE, BLACK);
-        --i;
-        if (i < 0) i = UNIT_SIZE - 1;
-    }
-    if (M5.BtnB.wasPressed()) {
-        if (world[i] > 0)
-            world[i] = 0;
-        else
-            world[i] = 1;
-        Serial2.print(world[i]);
-        Serial2.print(GETX(i));
-        Serial2.println(GETY(i));
-    }
-}
diff --git a/library.json b/library.json
index b2b66390..7dcf9e04 100644
--- a/library.json
+++ b/library.json
@@ -10,7 +10,7 @@
     "type": "git",
     "url": "https://github.com/m5stack/m5stack.git"
   },
-  "version": "0.4.4",
+  "version": "0.4.5",
   "frameworks": "arduino",
   "platforms": "espressif32",
   "headers": "M5Stack.h"
diff --git a/library.properties b/library.properties
index f5568d08..34ffd5b1 100644
--- a/library.properties
+++ b/library.properties
@@ -1,5 +1,5 @@
 name=M5Stack
-version=0.4.4
+version=0.4.5
 author=M5Stack
 maintainer=M5Stack
 sentence=Library for M5Stack Core development kit
@@ -8,4 +8,4 @@ category=Device Control
 url=https://github.com/m5stack/m5stack
 architectures=esp32
 includes=M5Stack.h
-depends=M5Family,M5Module-4Relay,MODULE_GRBL13.2,Ethernet2
\ No newline at end of file
+depends=M5Family,M5Module-4Relay,MODULE_GRBL13.2,M5_BMM150
\ No newline at end of file