diff --git a/demos/ota-demo/app/src/main/java/com/qsjnic/demo/ota/MainActivity.java b/demos/ota-demo/app/src/main/java/com/qsjnic/demo/ota/MainActivity.java
index 7ffa231..a65e226 100644
--- a/demos/ota-demo/app/src/main/java/com/qsjnic/demo/ota/MainActivity.java
+++ b/demos/ota-demo/app/src/main/java/com/qsjnic/demo/ota/MainActivity.java
@@ -116,15 +116,15 @@ public class MainActivity extends Activity {
         LinearLayout urlCard = card(root);
 
         TextView tvUrlSource = new TextView(this);
-        tvUrlSource.setText("固件来源：http://wtb.anzhitek.com/ota/0701/mcu_app.bin");
+        tvUrlSource.setText("固件来源：http://wtb.anzhitek.com/ota/0018/mcu_app.bin");
         tvUrlSource.setTextSize(12f);
         tvUrlSource.setTextColor(Color.parseColor("#666666"));
         tvUrlSource.setPadding(16, 0, 16, 8);
         urlCard.addView(tvUrlSource);
 
         EditText etUrl = new EditText(this);
-        etUrl.setHint("http://wtb.anzhitek.com/ota/0701/mcu_app.bin");
-        etUrl.setText("http://wtb.anzhitek.com/ota/0701/mcu_app.bin");
+        etUrl.setHint("http://wtb.anzhitek.com/ota/0018/mcu_app.bin");
+        etUrl.setText("http://wtb.anzhitek.com/ota/0018/mcu_app.bin");
         etUrl.setTextSize(14f);
         etUrl.setPadding(16, 16, 16, 16);
         urlCard.addView(etUrl);