diff --git a/luci/luci-app-qmodem/luasrc/model/cbi/qmodem/dial_config.lua b/luci/luci-app-qmodem/luasrc/model/cbi/qmodem/dial_config.lua
index 59f49ed..a9727c8 100644
--- a/luci/luci-app-qmodem/luasrc/model/cbi/qmodem/dial_config.lua
+++ b/luci/luci-app-qmodem/luasrc/model/cbi/qmodem/dial_config.lua
@@ -73,10 +73,16 @@ extend_prefix = s:taboption("advanced", Flag, "extend_prefix", translate("Extend
 extend_prefix.description = translate("Once checking, the prefix will be apply to lan zone")
 extend_prefix.default = "0"
 
+-- 软重启
 soft_reboot = s:taboption("advanced", Flag, "soft_reboot", translate("Soft Reboot"))
 soft_reboot.description = translate("enable modem soft reboot")
 soft_reboot.default = "0"
 
+-- 350 v4/v6存活检查
+mtk_check = s:taboption("advanced", Flag, "mtk_check", translate("MTK V4/V6 Check"))
+mtk_check.description = translate("Only for Fibocom MTK modem.")
+mtk_check.default = "0"
+
 -- 网络类型
 pdp_type= s:taboption("advanced", ListValue, "pdp_type", translate("PDP Type"))
 pdp_type.default = "ipv4v6"
diff --git a/luci/luci-app-qmodem/luasrc/model/cbi/qmodem/modem_config.lua b/luci/luci-app-qmodem/luasrc/model/cbi/qmodem/modem_config.lua
index 2906ebb..15053fe 100644
--- a/luci/luci-app-qmodem/luasrc/model/cbi/qmodem/modem_config.lua
+++ b/luci/luci-app-qmodem/luasrc/model/cbi/qmodem/modem_config.lua
@@ -69,9 +69,15 @@ name.cfgvalue = function(t, n)
     return Value.cfgvalue(t, n) or "-"
 end
 
+-- Soft Reboot
 soft_reboot = s:option(Flag, "soft_reboot", translate("Soft Reboot"))
 soft_reboot.default = "0"
 
+-- MTK Check
+mtk_check = s:option(Flag, "mtk_check", translate("MTK V4/V6 Check"))
+mtk_check.description = translate("Only for Fibocom MTK modem.")
+mtk_check.default = "0"
+
 -- PDP Context Index
 define_connect = s:option(Value, "define_connect", translate("PDP Context Index"))
 define_connect.default = "1"
diff --git a/luci/luci-app-qmodem/po/zh-cn/qmodem.po b/luci/luci-app-qmodem/po/zh-cn/qmodem.po
index 9f60990..f965a78 100644
--- a/luci/luci-app-qmodem/po/zh-cn/qmodem.po
+++ b/luci/luci-app-qmodem/po/zh-cn/qmodem.po
@@ -812,5 +812,11 @@ msgstr "拨号前执行的AT命令。"
 msgid "(still in beta)"
 msgstr "（仍在测试中）"
 
-msgid “（beta）"
+msgid "（beta）"
 msgstr "(测试)"
+
+msgid "MTK V4/V6 Check"
+msgstr "MTK V4/V6 存活检测"
+
+msgid "Only for Fibocom MTK modem."
+msgstr "只适用于广和通MTK模组。"
\ No newline at end of file
diff --git a/luci/luci-app-qmodem/po/zh_Hans/qmodem.po b/luci/luci-app-qmodem/po/zh_Hans/qmodem.po
index 9f60990..f965a78 100644
--- a/luci/luci-app-qmodem/po/zh_Hans/qmodem.po
+++ b/luci/luci-app-qmodem/po/zh_Hans/qmodem.po
@@ -812,5 +812,11 @@ msgstr "拨号前执行的AT命令。"
 msgid "(still in beta)"
 msgstr "（仍在测试中）"
 
-msgid “（beta）"
+msgid "（beta）"
 msgstr "(测试)"
+
+msgid "MTK V4/V6 Check"
+msgstr "MTK V4/V6 存活检测"
+
+msgid "Only for Fibocom MTK modem."
+msgstr "只适用于广和通MTK模组。"
\ No newline at end of file
diff --git a/luci/luci-app-qmodem/root/usr/share/qmodem/modem_dial.sh b/luci/luci-app-qmodem/root/usr/share/qmodem/modem_dial.sh
index 7f52306..5e1ada1 100755
--- a/luci/luci-app-qmodem/root/usr/share/qmodem/modem_dial.sh
+++ b/luci/luci-app-qmodem/root/usr/share/qmodem/modem_dial.sh
@@ -114,6 +114,7 @@ update_config()
     config_get en_bridge $modem_config en_bridge
     config_get do_not_add_dns $modem_config do_not_add_dns
     config_get dns_list $modem_config dns_list
+    [ "$manufacturer" == "fibocom" ] && [ "$platform" == "mediatek" ] && config_get mtk_check $modem_config mtk_check
     config_get global_dial main enable_dial
     # config_get ethernet_5g u$modem_config ethernet 转往口获取命令更新，待测试
     config_foreach get_associate_ethernet_by_path modem-slot
@@ -263,14 +264,6 @@ check_ip()
         fi
 
         if [ -n "$ipaddr" ];then
-            if [ $mtk -eq 1 ] && echo "$ipv4_config" | grep -qE '^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$'; then
-                if [ "$pdp_type" = "ipv4v6" ];then
-                    if ! ping -c 2 -w 5 2400:3200::1 > /dev/null 2>&1; then
-                        m_debug "ipv6 is down,try to restart"
-                        ifdown "$interface6_name" && sleep 2 && ifup "$interface6_name"
-                    fi
-                fi
-            fi
             ipv6=$(echo $ipaddr | grep -oE "\b([0-9a-fA-F]{0,4}:){2,7}[0-9a-fA-F]{0,4}\b")
             ipv4=$(echo $ipaddr | grep -oE "\b([0-9]{1,3}\.){3}[0-9]{1,3}\b")
             if [ "$manufacturer" = "simcom" ];then
@@ -298,6 +291,84 @@ check_ip()
         fi
 }
 
+check_mtk_connection()
+{
+    local lock_file="${MODEM_RUNDIR}/${modem_config}_dir/mtk_check.lock"
+    local result_file="${MODEM_RUNDIR}/${modem_config}_dir/mtk_check_result"
+
+    if [ -f "$lock_file" ]; then
+        local lock_time=$(stat -c %Y "$lock_file" 2>/dev/null || echo 0)
+        local current_time=$(cat /proc/uptime | awk '{print int($1)}')
+        if [ $((current_time - lock_time)) -lt 5 ]; then
+            return 0
+        else
+            rm -f "$lock_file"
+        fi
+    fi
+
+    touch "$lock_file"
+
+    (
+        if [ "$mtk" -eq 1 ] && [ -n "$ipv4" ] && [ -n "$modem_netcard" ]; then
+            local test=0
+
+            if ping -I "$modem_netcard" -c 1 -w 2 1.1.1.1 > /dev/null 2>&1; then
+                test=1
+            elif ping -I "$modem_netcard" -c 1 -w 2 8.8.8.8 > /dev/null 2>&1; then
+                test=1
+            elif [ -n "$gateway" ] && ping -I "$modem_netcard" -c 1 -w 2 "$gateway" > /dev/null 2>&1; then
+                test=1
+            fi
+
+            if [ "$test" -eq 0 ]; then
+                m_debug "IPv4 connection test failed, will redial"
+                echo "failed" > "$result_file"
+                rm -f "$lock_file"
+                return 1
+            fi
+
+            local ifup_time=$(ubus call network.interface.$interface6_name status 2>/dev/null | jsonfilter -e '@.uptime' 2>/dev/null || echo 0)
+            if [ -n "$ifup_time" ] && [ "$ifup_time" -gt 10 ] && { [ "$pdp_type" = "ipv4v6" ] || [ "$pdp_type" = "IPV4V6" ]; } && [ -n "$ipv6" ]; then
+                local ipv6_test=0
+
+                if ping6 -I "$modem_netcard" -c 1 -w 2 2400:3200::1 > /dev/null 2>&1; then
+                    ipv6_test=1
+                elif ping6 -I "$modem_netcard" -c 1 -w 2 2001:4860:4860::8888 > /dev/null 2>&1; then
+                    ipv6_test=1
+                fi
+
+                if [ "$ipv6_test" -eq 0 ]; then
+                    m_debug "IPv6 connection test failed, restarting IPv6 interface"
+                    if [ -n "$interface6_name" ]; then
+                        ifdown "$interface6_name" && sleep 2 && ifup "$interface6_name"
+                        m_debug "Restarted IPv6 interface $interface6_name"
+                    fi
+                fi
+            fi
+
+            echo "success" > "$result_file"
+        else
+            echo "skipped" > "$result_file"
+        fi
+
+        rm -f "$lock_file"
+    ) &
+
+    return 0
+}
+
+read_mtk_check_result()
+{
+    local result_file="${MODEM_RUNDIR}/${modem_config}_dir/mtk_check_result"
+    if [ -f "$result_file" ]; then
+        local result=$(cat "$result_file")
+        if [ "$result" = "failed" ]; then
+            return 1
+        fi
+    fi
+    return 0
+}
+
 append_to_fw_zone()
 {
     local fw_zone=$1
@@ -974,6 +1045,7 @@ at_dial_monitor()
     check_ip
     at_dial
     ipv4_cache=$ipv4
+    last_mtk_check=0
     while true; do
         check_ip
         if [ $connection_status -eq 0 ];then
@@ -987,13 +1059,32 @@ at_dial_monitor()
             fi
             sleep 10
         else
-            #检测ipv4是否变化
-            sleep 15
-            if [ "$ipv4" != "$ipv4_cache" ];then
+            check_mtk_if_needed() {
+                if [ "$mtk_check" = "1" ]; then
+                    current_time=$(cat /proc/uptime | awk '{print int($1)}')
+                    if [ "$mtk" -eq 1 ]; then
+                        check_mtk_connection
+                        read_mtk_check_result
+                        if [ $? -eq 1 ]; then
+                            at_dial
+                        fi
+                        last_mtk_check=$current_time
+                    fi
+                fi
+            }
+
+            if [ "$ipv4" != "$ipv4_cache" ]; then
                 handle_ip_change
                 ipv6_cache=$ipv6
                 ipv4_cache=$ipv4
+                continue
             fi
+            sleep 5
+            check_mtk_if_needed
+            sleep 5
+            check_mtk_if_needed
+            sleep 5
+            check_mtk_if_needed
         fi
         check_logfile_line
     done
diff --git a/luci/luci-app-qmodem/root/usr/share/qmodem/modem_port_rule.json b/luci/luci-app-qmodem/root/usr/share/qmodem/modem_port_rule.json
new file mode 100644
index 0000000..d10584b
--- /dev/null
+++ b/luci/luci-app-qmodem/root/usr/share/qmodem/modem_port_rule.json
@@ -0,0 +1,38 @@
+{
+    "modem_port_rule": {
+        "usb": {
+            "305a:1421": {
+                "name": "gm800",
+                "mode": "qmi",
+                "option_driver": 1,
+                "include": [
+                    "1.1"
+                ]
+            },
+            "305a:1404": {
+                "name": "gm800",
+                "mode": "rndis",
+                "option_driver": 0,
+                "include": [
+                    "1.1"
+                ]
+            },
+            "2dee:4d23": {
+                "name": "srm825xeu",
+                "mode": "ecm",
+                "option_driver": 1,
+                "include": [
+                    "1.1"
+                ]
+            },
+            "2dee:4d38": {
+                "name": "srm825xeu",
+                "mode": "rndis",
+                "option_driver": 1,
+                "include": [
+                    "1.3"
+                ]
+            }
+        }
+    }
+}
\ No newline at end of file
diff --git a/luci/luci-app-qmodem/root/usr/share/qmodem/modem_scan.sh b/luci/luci-app-qmodem/root/usr/share/qmodem/modem_scan.sh
index 090c9b8..5d7f3af 100755
--- a/luci/luci-app-qmodem/root/usr/share/qmodem/modem_scan.sh
+++ b/luci/luci-app-qmodem/root/usr/share/qmodem/modem_scan.sh
@@ -4,6 +4,7 @@ action=$1
 config=$2
 slot_type=$3
 modem_support=$(cat /usr/share/qmodem/modem_support.json)
+modem_port_rule=$(cat /usr/share/qmodem/modem_port_rule.json)
 debug_subject="modem_scan"
 source /lib/functions.sh
 source /usr/share/qmodem/modem_util.sh
@@ -183,7 +184,7 @@ scan_pcie_slot_interfaces()
             dun_devices=$(ls "$devices_path" | grep -E "wwan[0-9]at[0-9]")
         fi
     fi
-    echo "net_devices: $net_devices dun_devices: $dun_devices"
+    m_debug "net_devices: $net_devices dun_devices: $dun_devices"
     at_ports="$dun_devices" 
     [ -n "$net_devices" ] && get_associate_usb $slot
     if [ -n "$associated_usb" ] && [ -d "/sys/bus/usb/devices/$associated_usb" ]; then
@@ -225,6 +226,34 @@ scan_usb_slot_interfaces()
     net_devices=""
     tty_devices=""
     [ ! -d "$slot_path" ] && return
+
+    slot_vid=$(cat "$slot_path/idVendor" 2>/dev/null || echo "")
+    slot_pid=$(cat "$slot_path/idProduct" 2>/dev/null || echo "")
+
+    # m_debug "($slot_vid:$slot_pid) $slot_path"
+
+    if [ -n "$slot_vid" ] && [ -n "$slot_pid" ]; then
+        modem_port_config=$(echo $modem_port_rule | jq '.modem_port_rule."'$slot_type'"."'$slot_vid:$slot_pid'"')
+        if [ "$modem_port_config" != "null" ] && [ -n "$modem_port_config" ]; then
+            config_modem_name=$(echo $modem_port_config | jq -r '.name' 2>/dev/null || echo "")
+            include_ports=$(echo $modem_port_config | jq -r '.include[]' 2>/dev/null || echo "")
+            option_driver=$(echo $modem_port_config | jq -r '.option_driver' 2>/dev/null || echo "0")
+
+            if [ -n "$include_ports" ]; then
+                include_mode=1
+                m_debug "using special config for $config_modem_name($slot_vid:$slot_pid) with ports: $include_ports"
+            fi
+        fi
+    else
+        m_debug "Unable to read VID/PID from device path: $slot_path"
+    fi
+
+    if [ "$option_driver" = "1" ] && [ -n "$slot_vid" ] && [ -n "$slot_pid" ]; then
+        if ! echo "$slot_vid $slot_pid" > /sys/bus/usb-serial/drivers/option1/new_id 2>/dev/null; then
+            m_debug "failed to set option driver"
+        fi
+    fi
+
     local slot_interfaces=$(ls $slot_path | grep -E "$slot:[0-9]\.[0-9]+")
     for interface in $slot_interfaces; do
         unset device
@@ -234,6 +263,9 @@ scan_usb_slot_interfaces()
         [ ! -d "$interface_driver_path" ] && continue
         interface_driver=$(basename $(readlink $interface_driver_path))
         [ -z "$interface_driver" ] && continue
+
+        local if_port=$(echo "$interface" | grep -oE "[0-9]+\.[0-9]+$" || echo "")
+
         case $interface_driver in
             option|\
             cdc_acm|\
@@ -244,7 +276,22 @@ scan_usb_slot_interfaces()
                 [ -z "$ttyUSB_device" ] && [ -z "$ttyACM_device" ] && continue
                 [ -n "$ttyUSB_device" ] && device="$ttyUSB_device"
                 [ -n "$ttyACM_device" ] && device="$ttyACM_device"
-                [ -z "$tty_devices" ] && tty_devices="$device" || tty_devices="$tty_devices $device"
+
+                local should_include=1
+
+                if [ $include_mode -eq 1 ]; then
+                    should_include=0
+                    for included_port in $include_ports; do
+                        if [ -n "$if_port" ] && [ "$included_port" = "$if_port" ]; then
+                            should_include=1
+                            break
+                        fi
+                    done
+                fi
+
+                if [ $should_include -eq 1 ]; then
+                    [ -z "$tty_devices" ] && tty_devices="$device" || tty_devices="$tty_devices $device"
+                fi
             ;;
             qmi_wwan*|\
             cdc_mbim|\