diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D3F0SelfCheckMessageExecutor.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D3F0SelfCheckMessageExecutor.java
index b1c207c4..719686c0 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D3F0SelfCheckMessageExecutor.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/executor/D3F0SelfCheckMessageExecutor.java
@@ -32,6 +32,7 @@ import java.util.TimerTask;
 public class D3F0SelfCheckMessageExecutor implements Executor<D3F0SelfCheckMessage, Void> {
     private final Logger logger = LoggerFactory.getLogger(this.getClass());
 
+    final String F9PInitCmd = "f9";
     final String F9PColdStartCmd = "b56206040400000002001068";
     final String BTCloseMneaCmd = "424be8e1020a00040000ffff";
     final String BTOpenGGACmd = "424b852c0208000400000001";
@@ -172,9 +173,18 @@ public class D3F0SelfCheckMessageExecutor implements Executor<D3F0SelfCheckMessa
         String sendCmd = Integer.toHexString(msgType) + HexUtil.Short2HexString(len)+
                 HexUtil.Int2HexString(Integer.parseInt(device.getDeviceId()))+gnssCmd;
         rtcmClient.config(device.getDeviceId(), sendCmd);
-        saveMsg(device.getDeviceId(), device.getTenantId(),0xD310, sendCmd, true);
+        saveMsg(device.getDeviceId(), device.getTenantId(),msgType, sendCmd, true);
     }
 
+    //example: d31300050080F2B3f9
+    void sendDebugCommand(Device device, String cmd){
+        int msgType = 0xD313;
+        short len = (short) (cmd.length()/2+4);
+        String sendCmd = Integer.toHexString(msgType) + HexUtil.Short2HexString(len)+
+                HexUtil.Int2HexString(Integer.parseInt(device.getDeviceId()))+cmd;
+        rtcmClient.config(device.getDeviceId(), sendCmd);
+        saveMsg(device.getDeviceId(), device.getTenantId(),msgType, sendCmd, true);
+    }
     void sendD3F1Ack(Device device){
         int flag = 0xD3F1;
         short len =   (short) (4);
@@ -201,7 +211,8 @@ public class D3F0SelfCheckMessageExecutor implements Executor<D3F0SelfCheckMessa
         timer.schedule(new TimerTask() {
             @Override
             public void run() {
-                sendGnssCommand(device, F9PColdStartCmd);
+                //sendGnssCommand(device, F9PColdStartCmd);
+                sendDebugCommand(device, F9PInitCmd);
             }
         },1000);
     }