diff --git a/internal/gateway/models.go b/internal/gateway/models.go
index a3df6ff..45bff14 100644
--- a/internal/gateway/models.go
+++ b/internal/gateway/models.go
@@ -46,6 +46,33 @@ func (i *FlexInt) UnmarshalJSON(data []byte) error {
 	return nil
 }
 
+// FlexString 灵活字符串类型
+// Gateway 部分字段会在 string / number / bool 之间漂移，此类型统一转为字符串避免解析失败。
+type FlexString string
+
+// UnmarshalJSON 实现 json.Unmarshaler 接口
+// 支持："text", 123, true, null
+func (s *FlexString) UnmarshalJSON(data []byte) error {
+	raw := strings.TrimSpace(string(data))
+	if raw == "" || raw == "null" {
+		*s = ""
+		return nil
+	}
+
+	// 标准 JSON 字符串，优先做反转义，保持原始内容语义
+	if strings.HasPrefix(raw, "\"") && strings.HasSuffix(raw, "\"") {
+		unquoted, err := strconv.Unquote(raw)
+		if err == nil {
+			*s = FlexString(unquoted)
+			return nil
+		}
+	}
+
+	// number/bool/object/array 等类型直接保留原始文本
+	*s = FlexString(raw)
+	return nil
+}
+
 // GatewayResponse 是 Gateway API 的通用响应结构
 type GatewayResponse struct {
 	Code    int             `json:"code" description:"业务状态码（200 = 成功）"`
@@ -191,23 +218,23 @@ type SyncDeviceInfoReq struct {
 // SyncDeviceInfoResp sync-info 同步查询设备信息响应（对应 Gateway data 字段）
 // 注意：所有字段均可能为 null/零值，表示暂无数据
 type SyncDeviceInfoResp struct {
-	DeviceID        string   `json:"device_id" description:"设备ID（IMEI/SN）"`
-	DeviceName      string   `json:"device_name" description:"设备名称"`
-	IMEI            string   `json:"imei" description:"IMEI号"`
-	CurrentIccid    string   `json:"current_iccid" description:"当前使用的ICCID"`
-	DeviceType      string   `json:"device_type" description:"设备类型：1=诺行，2=玺龙，3=迎势达"`
-	SoftwareVersion string   `json:"software_version" description:"软件版本号"`
-	MacAddress      string   `json:"mac_address" description:"MAC地址"`
-	SSID            string   `json:"ssid" description:"WiFi热点名称"`
-	WifiEnabled     FlexBool `json:"wifi_enabled" description:"WiFi开关状态"`
-	SwitchMode      string   `json:"switch_mode" description:"切卡模式：0=自动，1=手动"`
-	RSSI            string   `json:"rssi" description:"接收信号强度"`
-	BatteryLevel    *FlexInt `json:"battery_level" description:"电池电量百分比（无电池时为null）"`
-	OnlineStatus    FlexInt  `json:"online_status" description:"在线状态：1=在线，2=离线"`
-	LastUpdateTime  string   `json:"last_update_time" description:"设备信息最后更新时间（ISO 8601）"`
-	LastOnlineTime  string   `json:"last_online_time" description:"设备最后在线时间（ISO 8601）"`
-	RunTime         string   `json:"run_time" description:"本次开机运行时间（秒）"`
-	DailyUsage      string   `json:"daily_usage" description:"日使用流量（字节）"`
+	DeviceID        FlexString `json:"device_id" description:"设备ID（IMEI/SN）"`
+	DeviceName      FlexString `json:"device_name" description:"设备名称"`
+	IMEI            FlexString `json:"imei" description:"IMEI号"`
+	CurrentIccid    FlexString `json:"current_iccid" description:"当前使用的ICCID"`
+	DeviceType      FlexString `json:"device_type" description:"设备类型：1=诺行，2=玺龙，3=迎势达"`
+	SoftwareVersion FlexString `json:"software_version" description:"软件版本号"`
+	MacAddress      FlexString `json:"mac_address" description:"MAC地址"`
+	SSID            FlexString `json:"ssid" description:"WiFi热点名称"`
+	WifiEnabled     FlexBool   `json:"wifi_enabled" description:"WiFi开关状态"`
+	SwitchMode      FlexString `json:"switch_mode" description:"切卡模式：0=自动，1=手动"`
+	RSSI            FlexString `json:"rssi" description:"接收信号强度"`
+	BatteryLevel    *FlexInt   `json:"battery_level" description:"电池电量百分比（无电池时为null）"`
+	OnlineStatus    FlexInt    `json:"online_status" description:"在线状态：1=在线，2=离线"`
+	LastUpdateTime  FlexString `json:"last_update_time" description:"设备信息最后更新时间（ISO 8601 或 Unix 时间戳）"`
+	LastOnlineTime  FlexString `json:"last_online_time" description:"设备最后在线时间（ISO 8601 或 Unix 时间戳）"`
+	RunTime         FlexString `json:"run_time" description:"本次开机运行时间（秒）"`
+	DailyUsage      FlexString `json:"daily_usage" description:"日使用流量（字节）"`
 
 	// 信号相关（D-10 补全）
 	Rsrp FlexInt `json:"rsrp" description:"参考信号接收功率(dBm)"`
@@ -215,23 +242,23 @@ type SyncDeviceInfoResp struct {
 	Sinr FlexInt `json:"sinr" description:"信噪比(dB)"`
 
 	// WiFi 相关（D-10 补全）
-	WifiPassword string `json:"wifi_password" description:"WiFi密码"`
+	WifiPassword FlexString `json:"wifi_password" description:"WiFi密码"`
 
 	// 网络相关（D-10 补全）
-	IPAddress string `json:"ip_address" description:"IP地址"`
-	WANIP     string `json:"wan_ip" description:"基站分配IPv4地址"`
-	LANIP     string `json:"lan_ip" description:"局域网网关IP地址"`
+	IPAddress FlexString `json:"ip_address" description:"IP地址"`
+	WANIP     FlexString `json:"wan_ip" description:"基站分配IPv4地址"`
+	LANIP     FlexString `json:"lan_ip" description:"局域网网关IP地址"`
 
 	// 连接相关（D-10 补全）
-	MaxClients   FlexInt `json:"max_clients" description:"最大连接客户端数"`
-	ClientNumber FlexInt `json:"client_number" description:"当前已连接客户端数"`
-	ConnectTime  string  `json:"connect_time" description:"设备本次联网时间(秒)"`
+	MaxClients   FlexInt    `json:"max_clients" description:"最大连接客户端数"`
+	ClientNumber FlexInt    `json:"client_number" description:"当前已连接客户端数"`
+	ConnectTime  FlexString `json:"connect_time" description:"设备本次联网时间(秒)"`
 
 	// 设备属性（D-10 补全）
-	Status       FlexInt `json:"status" description:"设备状态：1=正常，0=禁用"`
-	IMSI         string  `json:"imsi" description:"IMSI用户标识码"`
-	ULStats      string  `json:"ul_stats" description:"本次开机上传流量(字节)"`
-	DLStats      string  `json:"dl_stats" description:"本次开机下载流量(字节)"`
-	LimitSpeed   FlexInt `json:"limit_speed" description:"限速速率(KB/s)"`
-	SyncInterval FlexInt `json:"sync_interval" description:"信息上报周期(秒)"`
+	Status       FlexInt    `json:"status" description:"设备状态：1=正常，0=禁用"`
+	IMSI         FlexString `json:"imsi" description:"IMSI用户标识码"`
+	ULStats      FlexString `json:"ul_stats" description:"本次开机上传流量(字节)"`
+	DLStats      FlexString `json:"dl_stats" description:"本次开机下载流量(字节)"`
+	LimitSpeed   FlexInt    `json:"limit_speed" description:"限速速率(KB/s)"`
+	SyncInterval FlexInt    `json:"sync_interval" description:"信息上报周期(秒)"`
 }
diff --git a/internal/service/asset/service.go b/internal/service/asset/service.go
index 80f38d2..a25b654 100644
--- a/internal/service/asset/service.go
+++ b/internal/service/asset/service.go
@@ -7,6 +7,7 @@ import (
 	"context"
 	stderrors "errors"
 	"sort"
+	"strconv"
 	"time"
 
 	"github.com/break/junhong_cmp_fiber/internal/gateway"
@@ -442,36 +443,36 @@ func (s *Service) fetchDeviceGatewayInfo(ctx context.Context, deviceID uint) *dt
 func mapSyncRespToDeviceGatewayInfo(r *gateway.SyncDeviceInfoResp) *dto.DeviceGatewayInfo {
 	info := &dto.DeviceGatewayInfo{
 		OnlineStatus:    flexIntPtr(r.OnlineStatus),
-		RunTime:         strPtr(r.RunTime),
-		ConnectTime:     strPtr(r.ConnectTime),
-		LastOnlineTime:  strPtr(r.LastOnlineTime),
-		LastUpdateTime:  strPtr(r.LastUpdateTime),
+		RunTime:         flexStrPtr(r.RunTime),
+		ConnectTime:     flexStrPtr(r.ConnectTime),
+		LastOnlineTime:  flexStrPtr(r.LastOnlineTime),
+		LastUpdateTime:  flexStrPtr(r.LastUpdateTime),
 		Rsrp:            flexIntPtr(r.Rsrp),
 		Rsrq:            flexIntPtr(r.Rsrq),
-		Rssi:            strPtr(r.RSSI),
+		Rssi:            flexStrPtr(r.RSSI),
 		Sinr:            flexIntPtr(r.Sinr),
-		SSID:            strPtr(r.SSID),
+		SSID:            flexStrPtr(r.SSID),
 		WifiEnabled:     flexBoolPtr(r.WifiEnabled),
-		WifiPassword:    strPtr(r.WifiPassword),
-		IPAddress:       strPtr(r.IPAddress),
-		WANIP:           strPtr(r.WANIP),
-		LANIP:           strPtr(r.LANIP),
-		MACAddress:      strPtr(r.MacAddress),
-		DailyUsage:      strPtr(r.DailyUsage),
-		DLStats:         strPtr(r.DLStats),
-		ULStats:         strPtr(r.ULStats),
+		WifiPassword:    flexStrPtr(r.WifiPassword),
+		IPAddress:       flexStrPtr(r.IPAddress),
+		WANIP:           flexStrPtr(r.WANIP),
+		LANIP:           flexStrPtr(r.LANIP),
+		MACAddress:      flexStrPtr(r.MacAddress),
+		DailyUsage:      flexStrPtr(r.DailyUsage),
+		DLStats:         flexStrPtr(r.DLStats),
+		ULStats:         flexStrPtr(r.ULStats),
 		LimitSpeed:      flexIntPtr(r.LimitSpeed),
-		CurrentIccid:    strPtr(r.CurrentIccid),
+		CurrentIccid:    flexStrPtr(r.CurrentIccid),
 		MaxClients:      flexIntPtr(r.MaxClients),
 		ClientNumber:    flexIntPtr(r.ClientNumber),
-		SoftwareVersion: strPtr(r.SoftwareVersion),
-		SwitchMode:      strPtr(r.SwitchMode),
+		SoftwareVersion: flexStrPtr(r.SoftwareVersion),
+		SwitchMode:      flexStrPtr(r.SwitchMode),
 		SyncInterval:    flexIntPtr(r.SyncInterval),
-		DeviceID:        strPtr(r.DeviceID),
-		DeviceName:      strPtr(r.DeviceName),
-		DeviceType:      strPtr(r.DeviceType),
-		IMEI:            strPtr(r.IMEI),
-		IMSI:            strPtr(r.IMSI),
+		DeviceID:        flexStrPtr(r.DeviceID),
+		DeviceName:      flexStrPtr(r.DeviceName),
+		DeviceType:      flexStrPtr(r.DeviceType),
+		IMEI:            flexStrPtr(r.IMEI),
+		IMSI:            flexStrPtr(r.IMSI),
 		Status:          flexIntPtr(r.Status),
 	}
 	if r.BatteryLevel != nil {
@@ -490,6 +491,11 @@ func strPtr(s string) *string {
 	return &s
 }
 
+// flexStrPtr 将 FlexString 转为字符串指针
+func flexStrPtr(s gateway.FlexString) *string {
+	return strPtr(string(s))
+}
+
 func flexBoolPtr(fb gateway.FlexBool) *bool {
 	b := bool(fb)
 	return &b
@@ -580,19 +586,14 @@ func (s *Service) Refresh(ctx context.Context, assetType string, id uint) (*dto.
 func (s *Service) updateDeviceFromSyncInfo(ctx context.Context, deviceID uint, resp *gateway.SyncDeviceInfoResp) {
 	now := time.Now()
 
-	// 解析 LastOnlineTime（ISO 8601 字符串 → *time.Time）
-	var lastOnlineTime *time.Time
-	if resp.LastOnlineTime != "" {
-		if t, err := time.Parse(time.RFC3339, resp.LastOnlineTime); err == nil {
-			lastOnlineTime = &t
-		}
-	}
+	// Gateway 时间字段可能返回 RFC3339 或 Unix 时间戳，统一解析后再回写数据库
+	lastOnlineTime := parseGatewayTime(resp.LastOnlineTime)
 
 	// 更新设备 5 个存储字段
 	updates := map[string]any{
 		"online_status":        int(resp.OnlineStatus),
-		"software_version":     resp.SoftwareVersion,
-		"switch_mode":          resp.SwitchMode,
+		"software_version":     string(resp.SoftwareVersion),
+		"switch_mode":          string(resp.SwitchMode),
 		"last_gateway_sync_at": now,
 	}
 	if lastOnlineTime != nil {
@@ -609,9 +610,9 @@ func (s *Service) updateDeviceFromSyncInfo(ctx context.Context, deviceID uint, r
 		return
 	}
 
-	if resp.CurrentIccid != "" {
+	if string(resp.CurrentIccid) != "" {
 		// 更新 is_current 标识（事务原子操作，per D-14 决策）
-		if err := s.deviceSimBindingStore.UpdateIsCurrentByDeviceID(ctx, deviceID, resp.CurrentIccid); err != nil {
+		if err := s.deviceSimBindingStore.UpdateIsCurrentByDeviceID(ctx, deviceID, string(resp.CurrentIccid)); err != nil {
 			logger.GetAppLogger().Warn("sync-info 更新 is_current 失败",
 				zap.Uint("device_id", deviceID),
 				zap.Error(err))
@@ -619,6 +620,33 @@ func (s *Service) updateDeviceFromSyncInfo(ctx context.Context, deviceID uint, r
 	}
 }
 
+// parseGatewayTime 兼容解析 Gateway 时间字段
+// 支持 RFC3339 字符串、Unix 秒时间戳、Unix 毫秒时间戳。
+func parseGatewayTime(raw gateway.FlexString) *time.Time {
+	value := string(raw)
+	if value == "" {
+		return nil
+	}
+
+	if t, err := time.Parse(time.RFC3339, value); err == nil {
+		return &t
+	}
+
+	// 兼容网关返回的纯数字时间戳（秒或毫秒）
+	ts, err := strconv.ParseInt(value, 10, 64)
+	if err != nil {
+		return nil
+	}
+
+	var t time.Time
+	if len(value) >= 13 {
+		t = time.UnixMilli(ts)
+	} else {
+		t = time.Unix(ts, 0)
+	}
+	return &t
+}
+
 // GetPackages 获取资产的所有套餐列表（支持分页）
 // page 默认 1，pageSize 默认 50，pageSize 最大 100
 func (s *Service) GetPackages(ctx context.Context, assetType string, id uint, page, pageSize int) (*dto.AssetPackagesResult, error) {