diff --git a/.gitignore b/.gitignore
index 7361163..55d2cef 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,3 +9,4 @@ printer*.cfg
 !options.cfg
 /*.cfg
 /emmc_dump
+auto_install.sh
\ No newline at end of file
diff --git a/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Max b/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Max
new file mode 100644
index 0000000..afd3af6
--- /dev/null
+++ b/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Max
@@ -0,0 +1,4 @@
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552876
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552892
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552908
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552924
diff --git a/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Plus b/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Plus
new file mode 100644
index 0000000..afd3af6
--- /dev/null
+++ b/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Plus
@@ -0,0 +1,4 @@
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552876
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552892
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552908
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552924
diff --git a/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Pro b/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Pro
new file mode 100644
index 0000000..54b4799
--- /dev/null
+++ b/RESOURCES/OPTIONS/simple_mqtt/3.1.0/K2Pro
@@ -0,0 +1,4 @@
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552804
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552820
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552836
+\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00@4552852
diff --git a/RESOURCES/OPTIONS/simple_mqtt/simple_mqtt.sh b/RESOURCES/OPTIONS/simple_mqtt/simple_mqtt.sh
new file mode 100755
index 0000000..358540c
--- /dev/null
+++ b/RESOURCES/OPTIONS/simple_mqtt/simple_mqtt.sh
@@ -0,0 +1,92 @@
+#!/bin/bash
+
+# default urls to be replaced
+mqtt_urls="mqtt-universe-test.anycubic.com mqtt-universe.anycubic.com mqtt-test.anycubic.com mqtt.anycubic.com"
+
+project_root="$1"
+
+# check the parameters
+if [ $# != 2 ]; then
+  echo "usage : $0 <project_root> <mqtt_url>"
+  exit 1
+fi
+
+def_target="$ROOTFS_DIR/app/app"
+
+def_url="$2"
+
+# check the required tools
+check_tools "printf dd grep awk app_version.sh app_model.sh"
+
+# check the project root folder
+if [ ! -d "$project_root" ]; then
+  echo -e "${RED}ERROR: Cannot find the folder '$project_root' ${NC}"
+  exit 2
+fi
+
+# check the input file
+if [ ! -f "$def_target" ]; then
+  echo -e "${RED}ERROR: Cannot find the app file ${NC}"
+  exit 3
+fi
+
+# try to find out the app version (like app_ver="309")
+def_target="$ROOTFS_DIR/app/app"
+app_ver=$("$app_version_tool" "$def_target")
+if [ $? != 0 ]; then
+  echo -e "${RED}ERROR: Cannot find the app version ${NC}"
+  exit 4
+fi
+
+# check if the target is original or already patched
+for url in $mqtt_urls; do
+  mqtt_url="mqtts://$url:8883"
+  grep "$mqtt_url" "$def_target" &>>/dev/null
+  if [ $? -ne 0 ]; then
+    echo -e "${RED}ERROR: The 'app' might be already patched. Cannot find the expected URL '$mqtt_url' ${NC}"
+    echo -e "${YELLOW}INFO: Will not patch the 'app' file...${NC}"
+    exit 0
+  fi
+done
+
+# patch the target, replace all 4 oem mqtt urls with the provided custom url
+for url in $mqtt_urls; do
+  mqtt_url="mqtts://$url:8883"
+  offset=$(grep --binary-files=text -m1 -b -o "$mqtt_url" "$def_target" | awk -F: '{print $1}')
+  if [ -z "$offset" ]; then
+    echo -e "${RED}ERROR: The 'app' might be already patched. Cannot find the expected URL '$mqtt_url' ${NC}"
+    exit 5
+  fi
+  printf "mqtt://%s:1883\x00" "$def_url" | dd of="$def_target" bs=1 seek="$offset" conv=notrunc &>>/dev/null
+done
+
+ver_int=${app_ver//./}
+if [ "$ver_int" -ge 310 ]; then
+  # for version >= 3.1.0 patch the server url check, replace all 4 oem mqtt server urls with
+  # empty string to trick the check condition
+
+  # try to find out the model
+  app_model=$("$app_model_tool" "$def_target")
+  if [ $? != 0 ]; then
+    echo -e "${RED}ERROR: Cannot find the app model ${NC}"
+    exit 6
+  fi
+
+  # find if the selected setting file exists
+  settings_file="$OPTIONS_DIR/modify_mqtt/${app_ver}/${app_model}"
+  if [ ! -f "$settings_file" ]; then
+    echo -e "${RED}ERROR: Unsupported model and version! Cannot find the settings file '$settings_file' ${NC}"
+    exit 7
+  fi
+
+  # patch the app based on the model and the version
+  while read -r line; do
+    settings_data=$(echo -n "$line" | cut -d "@" -f 1)
+    settings_addr=$(echo -n "$line" | cut -d "@" -f 2)
+    printf "$settings_data" | dd of="$def_target" bs=1 seek="$settings_addr" conv=notrunc
+  done <"$settings_file"
+fi
+
+echo -e "${GREEN}INFO: The 'app' file has been successfully patched with the custom MQTT URL ${NC}"
+
+exit 0