diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 58d06dd..1ed66e3 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,8 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:sharedUserId="android.uid.system">
-
+    xmlns:tools="http://schemas.android.com/tools">
+<!--    android:sharedUserId="android.uid.system"-->
     <uses-feature android:name="android.hardware.usb.host" />
 
     <uses-permission android:name="android.permission.INTERNET" />
diff --git a/app/src/main/java/com/shuwei/dish/match/utils/Weigher2.java b/app/src/main/java/com/shuwei/dish/match/utils/Weigher2.java
index 4565a82..77aa436 100644
--- a/app/src/main/java/com/shuwei/dish/match/utils/Weigher2.java
+++ b/app/src/main/java/com/shuwei/dish/match/utils/Weigher2.java
@@ -24,7 +24,8 @@ public class Weigher2 {
     public static final int ERR_004 = 1004;
     public static final int ERR_PCB_NOT_SUPPORT = 2000;
     private static SensorScale mSensorScale;
-    private static String mDevicePort = "/dev/ttyS4";
+//    private static String mDevicePort = "/dev/ttyS4";
+    private static String mDevicePort = "/dev/ttyS7";
     private static boolean mConnect = false;
     private static Listener mListener;
 
@@ -41,7 +42,8 @@ public class Weigher2 {
             System.init();
             initScale();
             if (var0 == "pcb_908") {
-                mDevicePort = "/dev/ttyS4";
+//                mDevicePort = "/dev/ttyS4";
+                mDevicePort = "/dev/ttyS7";
             }
 
             mSensorScale.openScale(mDevicePort, 115200, (open) -> {