diff --git a/src/token.php b/src/token.php
index 9e944dff..57afb5bf 100644
--- a/src/token.php
+++ b/src/token.php
@@ -3,7 +3,7 @@
 
 function generateRequestToken($country, $phone) {
 	$signature = "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";
-	$classesMd5 = "+XW/7rCZDX9T7YrGQqTmcg==";
+	$classesMd5 = "pZ3J/O+F3HXOyx8YixzvPQ==";
 
     $key2 = base64_decode("/UIGKU1FVQa+ATM2A0za7G2KI9S/CwPYjgAbc67v7ep42eO/WeTLx1lb1cHwxpsEgF4+PmYpLd2YpGUdX/A2JQitsHzDwgcdBpUf7psX1BU=");
 	$data = base64_decode($signature) . base64_decode($classesMd5) . $phone;
diff --git a/src/whatsprot.class.php b/src/whatsprot.class.php
index 89ca3683..f02da44b 100644
--- a/src/whatsprot.class.php
+++ b/src/whatsprot.class.php
@@ -46,8 +46,8 @@ class WhatsProt
     const WHATSAPP_SERVER = 's.whatsapp.net';               // The hostname used to login/send messages.
     const WHATSAPP_UPLOAD_HOST = 'https://mms.whatsapp.net/client/iphone/upload.php'; // The upload host.
     const WHATSAPP_DEVICE = 'Android';                      // The device name.
-    const WHATSAPP_VER = '2.11.209';                // The WhatsApp version.
-    const WHATSAPP_USER_AGENT = 'WhatsApp/2.11.209 Android/4.3 Device/GalaxyS3';// User agent used in request/registration code.
+    const WHATSAPP_VER = '2.11.301';                // The WhatsApp version.
+    const WHATSAPP_USER_AGENT = 'WhatsApp/2.11.301 Android/4.3 Device/GalaxyS3';// User agent used in request/registration code.
 
     /**
      * Property declarations.
@@ -1637,19 +1637,18 @@ protected function doLogin()
         $this->sendNode($feat);
         $this->sendNode($auth);
 
-        $this->pollMessages();
-        $cnt = 0;
-        do {
-            $this->pollMessages();
-            if($this->challengeData != null) {
-                $data = $this->createAuthResponseNode();
-                $this->sendNode($data);
-                $this->reader->setKey($this->inputKey);
-                $this->writer->setKey($this->outputKey);
-                $this->pollMessages();
-            }
-        } while ($this->challengeData == null && ($cnt++ < 100) && (strcmp($this->loginStatus, static::DISCONNECTED_STATUS) == 0));
-        
+        $this->pollMessage();
+        $this->pollMessage();
+        $this->pollMessage();
+
+        if($this->challengeData != null) {
+            $data = $this->createAuthResponseNode();
+            $this->sendNode($data);
+            $this->reader->setKey($this->inputKey);
+            $this->writer->setKey($this->outputKey);
+            $this->pollMessage();
+        }
+
         if(strcmp($this->loginStatus, static::DISCONNECTED_STATUS) == 0)
 		{
 			throw new Exception('Login Failure');