diff --git a/examples/espressif/esp8266-webserver/src/HelloServer.ino b/examples/espressif/esp8266-webserver/src/HelloServer.ino
index 55cdf043..f996c534 100644
--- a/examples/espressif/esp8266-webserver/src/HelloServer.ino
+++ b/examples/espressif/esp8266-webserver/src/HelloServer.ino
@@ -1,29 +1,43 @@
 #include <ESP8266WiFi.h>
 #include <WiFiClient.h>
 #include <ESP8266WebServer.h>
+#include <ESP8266mDNS.h>
  
-const char* ssid = "*****";
-const char* password = "*****";
-
+const char* ssid = "******";
+const char* password = "******";
+MDNSResponder mdns;
 
 ESP8266WebServer server(80);
- 
+
 const int led = 13;
- 
-void handle_root() {
+
+void handleRoot() {
   digitalWrite(led, 1);
   server.send(200, "text/plain", "hello from esp8266!");
-  delay(100);
+  digitalWrite(led, 0);
+}
+
+void handleNotFound(){
+  digitalWrite(led, 1);
+  String message = "File Not Found\n\n";
+  message += "URI: ";
+  message += server.uri();
+  message += "\nMethod: ";
+  message += (server.method() == HTTP_GET)?"GET":"POST";
+  message += "\nArguments: ";
+  message += server.args();
+  message += "\n";
+  for (uint8_t i=0; i<server.args(); i++){
+    message += " " + server.argName(i) + ": " + server.arg(i) + "\n";
+  }
+  server.send(404, "text/plain", message);
   digitalWrite(led, 0);
 }
  
-void setup(void)
-{
-  Serial.begin(115200);
+void setup(void){
   pinMode(led, OUTPUT);
   digitalWrite(led, 0);
-
-  // Connect to WiFi network
+  Serial.begin(115200);
   WiFi.begin(ssid, password);
   Serial.println("");
 
@@ -37,18 +51,23 @@ void setup(void)
   Serial.println(ssid);
   Serial.print("IP address: ");
   Serial.println(WiFi.localIP());
-   
-  server.on("/", handle_root);
+  
+  if (mdns.begin("esp8266", WiFi.localIP())) {
+    Serial.println("MDNS responder started");
+  }
+  
+  server.on("/", handleRoot);
   
   server.on("/inline", [](){
     server.send(200, "text/plain", "this works as well");
   });
+
+  server.onNotFound(handleNotFound);
   
   server.begin();
   Serial.println("HTTP server started");
 }
  
-void loop(void)
-{
+void loop(void){
   server.handleClient();
-} 
+} 
\ No newline at end of file
diff --git a/platformio/boards/espressif.json b/platformio/boards/espressif.json
index 6c2b226c..100517a1 100644
--- a/platformio/boards/espressif.json
+++ b/platformio/boards/espressif.json
@@ -2,11 +2,11 @@
     "esp01": {
         "build": {
             "core": "esp8266",
-            "extra_flags": "-DARDUINO_ESP8266_ESP01 -DARDUINO_ARCH_ESP8266",
+            "extra_flags": "-DARDUINO_ESP8266_ESP01 -DARDUINO_ARCH_ESP8266 -DESP8266",
             "f_cpu": "80000000L",
-            "ldscript": "esp8266.ld",
+            "ldscript": "esp8266.flash.512k.ld",
             "mcu": "esp8266",
-            "variant": "esp01"
+            "variant": "generic"
         },
         "frameworks": ["arduino"],
         "name": "Espressif ESP8266 board",
diff --git a/platformio/builder/scripts/espressif.py b/platformio/builder/scripts/espressif.py
index 289f9955..ca4742c2 100644
--- a/platformio/builder/scripts/espressif.py
+++ b/platformio/builder/scripts/espressif.py
@@ -43,6 +43,8 @@ env.Replace(
         "-Os",  # optimize for size
         "-mlongcalls",
         "-mtext-section-literals",
+        "-falign-functions=4",
+        "-U__STRICT_ANSI__",
         "-MMD"  # output dependancy info
     ],
 
@@ -70,12 +72,12 @@ env.Replace(
     UPLOADER=join("$PIOPACKAGES_DIR", "tool-esptool", "esptool"),
     UPLOADERFLAGS=[
         "-vv",
-        "-cd", "none",
+        "-cd", "ck",
         "-cb", "$UPLOAD_SPEED",
         "-cp", "$UPLOAD_PORT",
         "-ca", "0x00000",
         "-cf", "${SOURCES[0]}",
-        "-ca", "0x40000",
+        "-ca", "0x10000",
         "-cf", "${SOURCES[1]}"
     ],
     UPLOADCMD='$UPLOADER $UPLOADERFLAGS'
@@ -88,6 +90,9 @@ env.Append(
                 "$UPLOADER",
                 "-eo", "$SOURCES",
                 "-bo", "${TARGETS[0]}",
+                "-bm", "qio",
+                "-bf", "40",
+                "-bz", "512K",
                 "-bs", ".text",
                 "-bs", ".data",
                 "-bs", ".rodata",
@@ -135,7 +140,7 @@ if "uploadlazy" in COMMAND_LINE_TARGETS:
 else:
     target_firm = env.ElfToBin(
         [join("$BUILD_DIR", "firmware_00000"),
-         join("$BUILD_DIR", "firmware_40000")], target_elf)
+         join("$BUILD_DIR", "firmware_10000")], target_elf)
 
 
 #
diff --git a/platformio/builder/scripts/frameworks/arduino.py b/platformio/builder/scripts/frameworks/arduino.py
index efded5f3..c7bb20ce 100644
--- a/platformio/builder/scripts/frameworks/arduino.py
+++ b/platformio/builder/scripts/frameworks/arduino.py
@@ -46,8 +46,8 @@ elif env.get("PLATFORM") == "espressif":
     env.Prepend(
         CPPPATH=[join("$PLATFORMFW_DIR", "sdk", "include")],
         LIBPATH=[join("$PLATFORMFW_DIR", "sdk", "lib")],
-        LIBS=["hal", "phy", "net80211", "lwip",
-              "wpa", "main", "pp", "c", "gcc"]
+        LIBS=["smartconfig", "pp", "main", "wpa", "lwip",
+              "net80211", "phy", "hal", "gcc", "m"]
     )
 
 env.Replace(PLATFORMFW_DIR=PLATFORMFW_DIR)