diff --git a/examples/WebUpdate/WebUpdate.ino b/examples/WebUpdate/WebUpdate.ino
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+++ b/examples/WebUpdate/WebUpdate.ino
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+/*
+  WebUpdate.ino, Example for the AutoConnect library.
+  Copyright (c) 2018, Hieromon Ikasamo
+  https://github.com/Hieromon/AutoConnect
+  This example is an implementation of a lightweight update feature
+  that updates the ESP8266's firmware from your web browser. It embeds
+  ESP8266HTTPUpdateServer into the AutoConnect menu and can invoke the
+  firmware update UI via a Web browser.
+  You need a compiled sketch binary file to the actual update and can
+  retrieve it using Arduino-IDE menu: [Sketck] -> [Export compiled binary].
+  Then you will find the .bin file in your sketch folder. Select the.bin
+  file on the update UI page to update the firmware.
+
+  Notes:
+  1. This example is valid only for ESP8266. In order to apply this
+  example to ESP32, it is necessary to quote WebUpdate.ino included
+  in the ESP32 arduino core distribution and implement a class
+  equivalent to ESP8266HTTPUpdateServer. But it is not included in this
+  example.
+
+  2. To experience this example, your client OS needs to be running a
+  service that can respond to multicast DNS.
+  For Mac OSX support is built in through Bonjour already.
+  For Linux, install Avahi.
+  For Windows10, available since Windows10 1803(April 2018 Update/RS4).
+
+  3. If you receive an error as follows:
+  Update error: ERROR[11]: Invalid bootstrapping state, reset ESP8266 before updating.
+  You need reset the module before sketch running.
+  Refer to https://hieromon.github.io/AutoConnect/faq.html#hang-up-after-reset for details.
+
+  This software is released under the MIT License.
+  https://opensource.org/licenses/MIT
+*/
+#ifdef ARDUINO_ARCH_ESP8266
+
+#include <ESP8266WiFi.h>
+#include <WiFiClient.h>
+#include <ESP8266WebServer.h>
+#include <ESP8266mDNS.h>
+#include <ESP8266HTTPUpdateServer.h>
+#include <AutoConnect.h>
+
+// This page for an example only, you can prepare the other for your application.
+static const char AUX_AppPage[] PROGMEM = R"(
+{
+  "title": "Hello world",
+  "uri": "/",
+  "menu": true,
+  "element": [
+    {
+      "name": "caption",
+      "type": "ACText",
+      "value": "<h2>Hello, world</h2>",
+      "style": "text-align:center;color:#2f4f4f;padding:10px;"
+    },
+    {
+      "name": "content",
+      "type": "ACText",
+      "value": "In this page, place the custom web page handled by the sketch application."
+    }
+  ]
+}
+)";
+
+// Fix hostname for mDNS. It is a requirement for the lightweight update feature.
+static const char* host = "esp8266-webupdate";
+#define HTTP_PORT 80
+
+// ESP8266WebServer instance will be shared both AutoConnect and UpdateServer.
+ESP8266WebServer  httpServer(HTTP_PORT);
+
+// Declare AutoConnectAux to bind the HTTPWebUpdateServer via /update url
+// and call it from the menu.
+// The custom web page is an empty page that does not contain AutoConnectElements.
+// Its content will be emitted by ESP8266HTTPUpdateServer.
+ESP8266HTTPUpdateServer httpUpdater;
+AutoConnectAux  update("/update", "Update");
+
+// Declare AutoConnect and the custom web pages for an application sketch.
+AutoConnect     portal(httpServer);
+AutoConnectAux  hello;
+
+void setup() {
+  delay(1000);
+  Serial.begin(115200);
+  Serial.println("\nBooting Sketch...");
+
+  // Prepare the ESP8266HTTPUpdateServer
+  // The /update handler will be registered during this function.
+  httpUpdater.setup(&httpServer);
+
+  // Load a custom web page for a sketch and a dummy page for the updater.
+  hello.load(AUX_AppPage);
+  portal.join({ hello, update });
+
+  if (portal.begin()) {
+    if (MDNS.begin(host)) {
+        MDNS.addService("http", "tcp", HTTP_PORT);
+        Serial.printf("HTTPUpdateServer ready! Open http://%s.local/update in your browser\n", host);
+    }
+    else
+      Serial.println("Error setting up MDNS responder");
+  }
+}
+
+void loop() {
+  // Sketch the application here.
+
+  // Invokes mDNS::update and AutoConnect::handleClient() for the menu processing.
+  MDNS.update();
+  portal.handleClient();
+}
+
+#else
+void setup() {}
+void loop() {}
+#endif