diff --git a/README.md b/README.md
index 2550f67f..4e42c03e 100644
--- a/README.md
+++ b/README.md
@@ -45,6 +45,8 @@ You will need to run the hardware setup procedure after upgrading to v2.4 from p
  * 4.3.1 
    * Auto list device list on page open
    * Advanced settings for control constants.
+   * Glycol as an option. No more dedicated Glycol build.
+   * Update Filemanager.
  * 4.3
    * update ESP32 framework to 5.4.0
    * update ESP8266 framework to 4.2.0
diff --git a/htmljs/src/config.tmpl.html b/htmljs/src/config.tmpl.html
index 1fccb5a9..b1da44b1 100644
--- a/htmljs/src/config.tmpl.html
+++ b/htmljs/src/config.tmpl.html
@@ -49,6 +49,17 @@ <h6 class="inline-header">
                         </select>
                     </div>
 
+                    <div layout horizontal cross-center>
+                      <h6 class="inline-header">
+                          Glycol Chilling
+                      </h6>
+                      <div>
+                          <input type="checkbox" id="glycol" name="glycol" class="switch-input" checked>
+                          <label for="glycol" class="switch-label" style="min-width: 0;"></label>
+                      </div>
+                    </div>
+
+
                     <div layout horizontal cross-center>
                         <h6 class="inline-header">
                             <%= config_title %>
diff --git a/htmljs/src/js/shared.js b/htmljs/src/js/shared.js
index c4f6a50c..49de63ed 100644
--- a/htmljs/src/js/shared.js
+++ b/htmljs/src/js/shared.js
@@ -1,4 +1,4 @@
-var JSVERSION = "4.3";
+var JSVERSION = "4.3.1";
 
 function s_ajax(b) {
     var c = new XMLHttpRequest();
diff --git a/platformio.ini b/platformio.ini
index 15db78b4..77836f7b 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -10,8 +10,8 @@
 
 [platformio]
 #sonoff OTA no longer supported, classic interface no longer supported
-#default_envs = esp32, esp32-oled, esp8266, esp8266-oled, esp8266-glycol, esp8266-tw, esp8266-spanish, esp8266-portuguese-br, esp8266-slovak, esp8266-ispindel, esp8266-it, esp8266-norwegian, thorrax, sonoff, sonoff-esp8285, d1pro, sonoff-am2301
-default_envs = esp32
+default_envs = esp32, esp32-oled, esp8266, esp8266-oled, esp8266-tw, esp8266-spanish, esp8266-portuguese-br, esp8266-slovak, esp8266-ispindel, esp8266-it, esp8266-norwegian, thorrax, sonoff, sonoff-esp8285, d1pro, sonoff-am2301
+#default_envs = esp32-dev
 #default_envs = esp8266-dev
 #default_envs = esp8266
 
@@ -185,17 +185,6 @@ build_flags = -Wl,-Tesp8266.flash.4m2m.ld
 
 lib_deps = ${common_env_data.lib_deps_external_esp8266}
 
-[env:esp8266-glycol] 
-;not yet working
-platform = ${common_env_data.esp8266_framework}
-board = d1_mini
-framework = arduino
-lib_extra_dirs = ${common_env_data.esp8266_lib}
-build_flags = -Wl,-Tesp8266.flash.4m2m.ld 
-     -DEnableGlycolSupport=true
-
-lib_deps = ${common_env_data.lib_deps_external_esp8266}
-
 
 [env:esp8266-spanish]
 platform = ${common_env_data.esp8266_framework}
diff --git a/src/Config.h b/src/Config.h
index db1fefa1..ed1e8573 100644
--- a/src/Config.h
+++ b/src/Config.h
@@ -317,7 +317,7 @@
 #define FS_EEPROM true
 #endif
 
-#define BPL_VERSION "4.3"
+#define BPL_VERSION "4.3.1"
 
 
 #ifndef MORE_PINS_CONFIGURATION