diff --git a/app/src/main/java/com/fongmi/android/tv/player/ParseJob.java b/app/src/main/java/com/fongmi/android/tv/player/ParseJob.java
index 86aceae89..570fe79c3 100644
--- a/app/src/main/java/com/fongmi/android/tv/player/ParseJob.java
+++ b/app/src/main/java/com/fongmi/android/tv/player/ParseJob.java
@@ -12,9 +12,9 @@ import com.fongmi.android.tv.impl.ParseCallback;
 import com.fongmi.android.tv.server.Server;
 import com.fongmi.android.tv.ui.custom.CustomWebView;
 import com.fongmi.android.tv.utils.UrlUtil;
-import com.fongmi.android.tv.utils.Util;
 import com.github.catvod.net.OkHttp;
 import com.github.catvod.utils.Json;
+import com.github.catvod.utils.Util;
 import com.google.common.net.HttpHeaders;
 import com.google.gson.JsonElement;
 import com.google.gson.JsonObject;
diff --git a/app/src/main/java/com/fongmi/android/tv/utils/Util.java b/app/src/main/java/com/fongmi/android/tv/utils/Util.java
index 58273ff55..0cf135cda 100644
--- a/app/src/main/java/com/fongmi/android/tv/utils/Util.java
+++ b/app/src/main/java/com/fongmi/android/tv/utils/Util.java
@@ -10,7 +10,6 @@ import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
 import android.content.res.Configuration;
-import android.net.wifi.WifiManager;
 import android.os.Build;
 import android.os.IBinder;
 import android.os.Parcelable;
@@ -23,10 +22,9 @@ import android.view.inputmethod.InputMethodManager;
 
 import com.fongmi.android.tv.App;
 import com.fongmi.android.tv.R;
+import com.github.catvod.utils.Shell;
 
-import java.io.BufferedReader;
-import java.io.FileReader;
-import java.io.IOException;
+import java.net.NetworkInterface;
 import java.text.SimpleDateFormat;
 import java.util.ArrayList;
 import java.util.Formatter;
@@ -106,18 +104,24 @@ public class Util {
     }
 
     public static String getSerial() {
-        try (BufferedReader reader = new BufferedReader(new FileReader("/proc/cpuinfo"))) {
-            String line;
-            while ((line = reader.readLine()) != null) if (line.startsWith("Serial")) return line.split(":")[1].trim();
-            return "";
-        } catch (IOException e) {
-            return "";
-        }
+        return Shell.exec("getprop ro.serialno");
     }
 
     public static String getMac() {
-        WifiManager manager = (WifiManager) App.get().getApplicationContext().getSystemService(Context.WIFI_SERVICE);
-        return manager.getConnectionInfo().getMacAddress();
+        String eth = getMac("eth0");
+        String wlan = getMac("wlan0");
+        return !wlan.isEmpty() ? wlan : eth;
+    }
+
+    public static String getMac(String name) {
+        try {
+            StringBuilder sb = new StringBuilder();
+            NetworkInterface nif = NetworkInterface.getByName(name);
+            for (byte b : nif.getHardwareAddress()) sb.append(String.format("%02X:", b));
+            return sb.substring(0, sb.length() - 1);
+        } catch (Exception e) {
+            return "";
+        }
     }
 
     public static String getDeviceName() {
@@ -126,15 +130,6 @@ public class Util {
         return model.startsWith(manufacturer) ? model : manufacturer + " " + model;
     }
 
-    public static String substring(String text) {
-        return substring(text, 1);
-    }
-
-    public static String substring(String text, int num) {
-        if (text != null && text.length() > num) return text.substring(0, text.length() - num);
-        return text;
-    }
-
     public static long format(SimpleDateFormat format, String src) {
         try {
             return format.parse(src).getTime();
diff --git a/catvod/src/main/java/com/github/catvod/utils/Shell.java b/catvod/src/main/java/com/github/catvod/utils/Shell.java
index 6fde6a3e4..ee06ae985 100644
--- a/catvod/src/main/java/com/github/catvod/utils/Shell.java
+++ b/catvod/src/main/java/com/github/catvod/utils/Shell.java
@@ -2,16 +2,25 @@ package com.github.catvod.utils;
 
 import com.orhanobut.logger.Logger;
 
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+
 public class Shell {
 
     private static final String TAG = Shell.class.getSimpleName();
 
-    public static void exec(String command) {
+    public static String exec(String command) {
         try {
-            int code = Runtime.getRuntime().exec(command).waitFor();
-            if (code != 0) Logger.t(TAG).d("Shell command '%s' failed with exit code '%s'", command, code);
+            StringBuilder sb = new StringBuilder();
+            Process p = Runtime.getRuntime().exec(command);
+            BufferedReader br = new BufferedReader(new InputStreamReader(p.getInputStream()));
+            String line;
+            while ((line = br.readLine()) != null) sb.append(line).append("\n");
+            Logger.t(TAG).d("Shell command '%s' with exit code '%s'", command, p.waitFor());
+            return Util.substring(sb.toString());
         } catch (Exception e) {
             e.printStackTrace();
+            return "";
         }
     }
 }
\ No newline at end of file
diff --git a/catvod/src/main/java/com/github/catvod/utils/Util.java b/catvod/src/main/java/com/github/catvod/utils/Util.java
index 0220732c1..39924985d 100644
--- a/catvod/src/main/java/com/github/catvod/utils/Util.java
+++ b/catvod/src/main/java/com/github/catvod/utils/Util.java
@@ -103,6 +103,15 @@ public class Util {
         }
     }
 
+    public static String substring(String text) {
+        return substring(text, 1);
+    }
+
+    public static String substring(String text, int num) {
+        if (text != null && text.length() > num) return text.substring(0, text.length() - num);
+        return text;
+    }
+
     public static String getIp() {
         try {
             WifiManager manager = (WifiManager) Init.context().getApplicationContext().getSystemService(Context.WIFI_SERVICE);