diff --git a/doc/ota_updates/readme.rst b/doc/ota_updates/readme.rst
index 6714d3096..12238c54c 100755
--- a/doc/ota_updates/readme.rst
+++ b/doc/ota_updates/readme.rst
@@ -571,15 +571,16 @@ Example header data:
 
 ::
 
-        [HTTP_USER_AGENT] => ESP8266-http-Update
-        [HTTP_X_ESP8266_STA_MAC] => 18:FE:AA:AA:AA:AA
-        [HTTP_X_ESP8266_AP_MAC] => 1A:FE:AA:AA:AA:AA
-        [HTTP_X_ESP8266_FREE_SPACE] => 671744
-        [HTTP_X_ESP8266_SKETCH_SIZE] => 373940
-        [HTTP_X_ESP8266_SKETCH_MD5] => a56f8ef78a0bebd812f62067daf1408a
-        [HTTP_X_ESP8266_CHIP_SIZE] => 4194304
-        [HTTP_X_ESP8266_SDK_VERSION] => 1.3.0
-        [HTTP_X_ESP8266_VERSION] => DOOR-7-g14f53a19
+        [User-Agent] => ESP8266-http-Update
+        [x-ESP8266-STA-MAC] => 18:FE:AA:AA:AA:AA
+        [x-ESP8266-AP-MAC] => 1A:FE:AA:AA:AA:AA
+        [x-ESP8266-free-space] => 671744
+        [x-ESP8266-sketch-size] => 373940
+        [x-ESP8266-sketch-md5] => a56f8ef78a0bebd812f62067daf1408a
+        [x-ESP8266-chip-size] => 4194304
+        [x-ESP8266-sdk-version] => 1.3.0
+        [x-ESP8266-version] => DOOR-7-g14f53a19
+        [x-ESP8266-mode] => sketch
 
 With this information the script now can check if an update is needed. It is also possible to deliver different binaries based on the MAC address, as in the following example:
 
@@ -608,20 +609,20 @@ With this information the script now can check if an update is needed. It is als
         readfile($path);
     }
 
-    if(!check_header('HTTP_USER_AGENT', 'ESP8266-http-Update')) {
+    if(!check_header('User-Agent', 'ESP8266-http-Update')) {
         header($_SERVER["SERVER_PROTOCOL"].' 403 Forbidden', true, 403);
         echo "only for ESP8266 updater!\n";
         exit();
     }
 
     if(
-        !check_header('HTTP_X_ESP8266_STA_MAC') ||
-        !check_header('HTTP_X_ESP8266_AP_MAC') ||
-        !check_header('HTTP_X_ESP8266_FREE_SPACE') ||
-        !check_header('HTTP_X_ESP8266_SKETCH_SIZE') ||
-        !check_header('HTTP_X_ESP8266_SKETCH_MD5') ||
-        !check_header('HTTP_X_ESP8266_CHIP_SIZE') ||
-        !check_header('HTTP_X_ESP8266_SDK_VERSION')
+        !check_header('x-ESP8266-STA-MAC') ||
+        !check_header('x-ESP8266-AP-MAC') ||
+        !check_header('x-ESP8266-free-space') ||
+        !check_header('x-ESP8266-sketch-size') ||
+        !check_header('x-ESP8266-sketch-md5') ||
+        !check_header('x-ESP8266-chip-size') ||
+        !check_header('x-ESP8266-sdk-version')
     ) {
         header($_SERVER["SERVER_PROTOCOL"].' 403 Forbidden', true, 403);
         echo "only for ESP8266 updater! (header)\n";
@@ -633,17 +634,17 @@ With this information the script now can check if an update is needed. It is als
         "18:FE:AA:AA:AA:BB" => "TEMP-1.0.0"
     );
 
-    if(!isset($db[$_SERVER['HTTP_X_ESP8266_STA_MAC']])) {
+    if(!isset($db[$_SERVER['x-ESP8266-STA-MAC']])) {
         header($_SERVER["SERVER_PROTOCOL"].' 500 ESP MAC not configured for updates', true, 500);
     }
 
-    $localBinary = "./bin/".$db[$_SERVER['HTTP_X_ESP8266_STA_MAC']].".bin";
+    $localBinary = "./bin/".$db[$_SERVER['x-ESP8266-STA-MAC']].".bin";
 
     // Check if version has been set and does not match, if not, check if
     // MD5 hash between local binary and ESP8266 binary do not match if not.
     // then no update has been found.
-    if((!check_header('HTTP_X_ESP8266_SDK_VERSION') && $db[$_SERVER['HTTP_X_ESP8266_STA_MAC']] != $_SERVER['HTTP_X_ESP8266_VERSION'])
-        || $_SERVER["HTTP_X_ESP8266_SKETCH_MD5"] != md5_file($localBinary)) {
+    if((!check_header('x-ESP8266-sdk-version') && $db[$_SERVER['x-ESP8266-STA-MAC']] != $_SERVER['x-ESP8266-version'])
+        || $_SERVER["x-ESP8266-sketch-md5"] != md5_file($localBinary)) {
         sendFile($localBinary);
     } else {
         header($_SERVER["SERVER_PROTOCOL"].' 304 Not Modified', true, 304);