diff --git a/install.sh b/install.sh
index 620b7897c..46adb1ae3 100644
--- a/install.sh
+++ b/install.sh
@@ -1307,15 +1307,11 @@ install_x-ui() {
     if [ $# == 0 ]; then
         tag_version=$(curl -Ls --retry 5 --retry-delay 3 --connect-timeout 15 --max-time 60 "https://api.github.com/repos/MHSanaei/3x-ui/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
         if [[ ! -n "$tag_version" ]]; then
-            echo -e "${yellow}Trying to fetch version with IPv4...${plain}"
-            tag_version=$(curl -4 -Ls --retry 5 --retry-delay 3 --connect-timeout 15 --max-time 60 "https://api.github.com/repos/MHSanaei/3x-ui/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
-            if [[ ! -n "$tag_version" ]]; then
-                echo -e "${red}Failed to fetch x-ui version, it may be due to GitHub API restrictions, please try it later${plain}"
-                exit 1
-            fi
+            echo -e "${red}Failed to fetch x-ui version, it may be due to GitHub API restrictions, please try it later${plain}"
+            exit 1
         fi
         echo -e "Got x-ui latest version: ${tag_version}, beginning the installation..."
-        curl -4fLR --retry 5 --retry-delay 3 --connect-timeout 15 --max-time 300 -o ${xui_folder}-linux-$(arch).tar.gz https://github.com/MHSanaei/3x-ui/releases/download/${tag_version}/x-ui-linux-$(arch).tar.gz
+        curl -fLR --retry 5 --retry-delay 3 --connect-timeout 15 --max-time 300 -o ${xui_folder}-linux-$(arch).tar.gz https://github.com/MHSanaei/3x-ui/releases/download/${tag_version}/x-ui-linux-$(arch).tar.gz
         if [[ $? -ne 0 ]]; then
             echo -e "${red}Downloading x-ui failed, please be sure that your server can access GitHub ${plain}"
             exit 1
@@ -1332,13 +1328,13 @@ install_x-ui() {
 
         url="https://github.com/MHSanaei/3x-ui/releases/download/${tag_version}/x-ui-linux-$(arch).tar.gz"
         echo -e "Beginning to install x-ui $1"
-        curl -4fLR --retry 5 --retry-delay 3 --connect-timeout 15 --max-time 300 -o ${xui_folder}-linux-$(arch).tar.gz ${url}
+        curl -fLR --retry 5 --retry-delay 3 --connect-timeout 15 --max-time 300 -o ${xui_folder}-linux-$(arch).tar.gz ${url}
         if [[ $? -ne 0 ]]; then
             echo -e "${red}Download x-ui $1 failed, please check if the version exists ${plain}"
             exit 1
         fi
     fi
-    curl -4fLRo /usr/bin/x-ui-temp https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.sh
+    curl -fLRo /usr/bin/x-ui-temp https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.sh
     if [[ $? -ne 0 ]]; then
         echo -e "${red}Failed to download x-ui.sh${plain}"
         exit 1
@@ -1404,7 +1400,7 @@ install_x-ui() {
     fi
 
     if [[ $release == "alpine" ]]; then
-        curl -4fLRo /etc/init.d/x-ui https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.rc
+        curl -fLRo /etc/init.d/x-ui https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.rc
         if [[ $? -ne 0 ]]; then
             echo -e "${red}Failed to download x-ui.rc${plain}"
             exit 1
@@ -1461,13 +1457,13 @@ install_x-ui() {
             echo -e "${yellow}Service files not found in tar.gz, downloading from GitHub...${plain}"
             case "${release}" in
                 ubuntu | debian | armbian)
-                    curl -4fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.debian > /dev/null 2>&1
+                    curl -fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.debian > /dev/null 2>&1
                     ;;
                 arch | manjaro | parch)
-                    curl -4fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.arch > /dev/null 2>&1
+                    curl -fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.arch > /dev/null 2>&1
                     ;;
                 *)
-                    curl -4fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.rhel > /dev/null 2>&1
+                    curl -fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.rhel > /dev/null 2>&1
                     ;;
             esac
 
diff --git a/update.sh b/update.sh
index 0a590f2f7..608db2d16 100755
--- a/update.sh
+++ b/update.sh
@@ -870,20 +870,12 @@ update_x-ui() {
 
     tag_version=$(${curl_bin} -Ls "https://api.github.com/repos/MHSanaei/3x-ui/releases/latest" 2> /dev/null | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
     if [[ ! -n "$tag_version" ]]; then
-        echo -e "${yellow}Trying to fetch version with IPv4...${plain}"
-        tag_version=$(${curl_bin} -4 -Ls "https://api.github.com/repos/MHSanaei/3x-ui/releases/latest" | grep '"tag_name":' | sed -E 's/.*"([^"]+)".*/\1/')
-        if [[ ! -n "$tag_version" ]]; then
-            _fail "ERROR: Failed to fetch x-ui version, it may be due to GitHub API restrictions, please try it later"
-        fi
+        _fail "ERROR: Failed to fetch x-ui version, it may be due to GitHub API restrictions, please try it later"
     fi
     echo -e "Got x-ui latest version: ${tag_version}, beginning the installation..."
     ${curl_bin} -fLRo ${xui_folder}-linux-$(arch).tar.gz https://github.com/MHSanaei/3x-ui/releases/download/${tag_version}/x-ui-linux-$(arch).tar.gz 2> /dev/null
     if [[ $? -ne 0 ]]; then
-        echo -e "${yellow}Trying to fetch version with IPv4...${plain}"
-        ${curl_bin} -4fLRo ${xui_folder}-linux-$(arch).tar.gz https://github.com/MHSanaei/3x-ui/releases/download/${tag_version}/x-ui-linux-$(arch).tar.gz 2> /dev/null
-        if [[ $? -ne 0 ]]; then
-            _fail "ERROR: Failed to download x-ui, please be sure that your server can access GitHub"
-        fi
+        _fail "ERROR: Failed to download x-ui, please be sure that your server can access GitHub"
     fi
 
     if [[ -e ${xui_folder}/ ]]; then
@@ -950,11 +942,7 @@ update_x-ui() {
     echo -e "${green}Downloading and installing x-ui.sh script...${plain}"
     ${curl_bin} -fLRo /usr/bin/x-ui https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.sh > /dev/null 2>&1
     if [[ $? -ne 0 ]]; then
-        echo -e "${yellow}Trying to fetch x-ui with IPv4...${plain}"
-        ${curl_bin} -4fLRo /usr/bin/x-ui https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.sh > /dev/null 2>&1
-        if [[ $? -ne 0 ]]; then
-            _fail "ERROR: Failed to download x-ui.sh script, please be sure that your server can access GitHub"
-        fi
+        _fail "ERROR: Failed to download x-ui.sh script, please be sure that your server can access GitHub"
     fi
 
     chmod +x ${xui_folder}/x-ui.sh > /dev/null 2>&1
@@ -973,10 +961,7 @@ update_x-ui() {
         echo -e "${green}Downloading and installing startup unit x-ui.rc...${plain}"
         ${curl_bin} -fLRo /etc/init.d/x-ui https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.rc > /dev/null 2>&1
         if [[ $? -ne 0 ]]; then
-            ${curl_bin} -4fLRo /etc/init.d/x-ui https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.rc > /dev/null 2>&1
-            if [[ $? -ne 0 ]]; then
-                _fail "ERROR: Failed to download startup unit x-ui.rc, please be sure that your server can access GitHub"
-            fi
+            _fail "ERROR: Failed to download startup unit x-ui.rc, please be sure that your server can access GitHub"
         fi
         chmod +x /etc/init.d/x-ui > /dev/null 2>&1
         chown root:root /etc/init.d/x-ui > /dev/null 2>&1
@@ -1027,13 +1012,13 @@ update_x-ui() {
                 echo -e "${yellow}Service files not found in tar.gz, downloading from GitHub...${plain}"
                 case "${release}" in
                     ubuntu | debian | armbian)
-                        ${curl_bin} -4fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.debian > /dev/null 2>&1
+                        ${curl_bin} -fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.debian > /dev/null 2>&1
                         ;;
                     arch | manjaro | parch)
-                        ${curl_bin} -4fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.arch > /dev/null 2>&1
+                        ${curl_bin} -fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.arch > /dev/null 2>&1
                         ;;
                     *)
-                        ${curl_bin} -4fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.rhel > /dev/null 2>&1
+                        ${curl_bin} -fLRo ${xui_service}/x-ui.service https://raw.githubusercontent.com/MHSanaei/3x-ui/main/x-ui.service.rhel > /dev/null 2>&1
                         ;;
                 esac