diff --git a/History.txt b/History.txt
index 16c97c67..4ed0c2c3 100644
--- a/History.txt
+++ b/History.txt
@@ -5,6 +5,13 @@
   Company : SHTRIH-M www.shtrih-m.ru (495) 787-6090
   Url     : https://github.com/shtrih-m/javapos_shtrih
     
+********************************************************************************
+
+  13.12.2022
+  deviceServiceVersion = 1013682
+  
+  [-] Fixed error with PPP port close
+  
 ********************************************************************************
 
   05.12.2022
diff --git a/Source/Core/src/com/shtrih/fiscalprinter/port/PPPThread.java b/Source/Core/src/com/shtrih/fiscalprinter/port/PPPThread.java
index 4a5d316b..badcb3e5 100644
--- a/Source/Core/src/com/shtrih/fiscalprinter/port/PPPThread.java
+++ b/Source/Core/src/com/shtrih/fiscalprinter/port/PPPThread.java
@@ -104,6 +104,7 @@ public void stop() {
         } catch (Exception e) {
             logger.error(e);
         }
+        logger.debug("PPP thread stopped");
     }
 
     public boolean waitForContext(long timeout, long timeToSleep) throws InterruptedException
diff --git a/Source/Core/src/com/shtrih/jpos/monitoring/MonitoringServerX5.java b/Source/Core/src/com/shtrih/jpos/monitoring/MonitoringServerX5.java
index 8ad9dc1a..1670ec2e 100644
--- a/Source/Core/src/com/shtrih/jpos/monitoring/MonitoringServerX5.java
+++ b/Source/Core/src/com/shtrih/jpos/monitoring/MonitoringServerX5.java
@@ -63,7 +63,7 @@ public void stop() throws Exception {
     public void run() {
         try {
             ServerSocket serverSocket = new ServerSocket(port);
-            while (!thread.isInterrupted()) {
+            while (!Thread.currentThread().isInterrupted()) {
                 try {
                     serverSocket.setSoTimeout(AcceptTimeout);
                     Socket socket = serverSocket.accept();
diff --git a/Source/FiscalPrinterService/src/com/shtrih/util/ServiceVersion.java b/Source/FiscalPrinterService/src/com/shtrih/util/ServiceVersion.java
index 1b16f8c9..91470fce 100644
--- a/Source/FiscalPrinterService/src/com/shtrih/util/ServiceVersion.java
+++ b/Source/FiscalPrinterService/src/com/shtrih/util/ServiceVersion.java
@@ -1,5 +1,5 @@
 package com.shtrih.util;
 
 public class ServiceVersion {
-    public static final String VERSION = "681";
+    public static final String VERSION = "681-1-g38e69718";
 }
\ No newline at end of file
diff --git a/Source/android/FptrServiceAndroid/src/com/shtrih/fiscalprinter/port/PPPPort.java b/Source/android/FptrServiceAndroid/src/com/shtrih/fiscalprinter/port/PPPPort.java
index d43ca56a..b74c957a 100644
--- a/Source/android/FptrServiceAndroid/src/com/shtrih/fiscalprinter/port/PPPPort.java
+++ b/Source/android/FptrServiceAndroid/src/com/shtrih/fiscalprinter/port/PPPPort.java
@@ -11,6 +11,7 @@
 import com.shtrih.util.CompositeLogger;
 import com.shtrih.util.Localizer;
 import com.shtrih.util.StaticContext;
+import com.shtrih.util.Hex;
 
 import java.io.IOException;
 import java.io.InputStream;
@@ -35,6 +36,7 @@ public class PPPPort implements PrinterPort, PrinterPort.IPortEvents {
     private IPortEvents events;
     private Socket socket = null;
     private LocalSocket localSocket = null;
+    private boolean stopFlag = false;
     private Thread dispatchThread = null;
     private PPPThread pppThread = null;
     private int openTimeout = 3000;
@@ -67,7 +69,9 @@ public synchronized void open(int timeout) throws Exception {
         logger.debug("open: OK");
     }
 
-    public synchronized void connect(int timeout) throws Exception {
+    public synchronized void connect(int timeout) throws Exception
+    {
+        logger.debug("connect...");
         if (isOpened()) return;
         openTimeout = timeout;
         localSocketName = UUID.randomUUID().toString();
@@ -85,6 +89,7 @@ public synchronized void connect(int timeout) throws Exception {
         if (events != null) {
             events.onConnect();
         }
+        logger.debug("connect: OK");
     }
 
     public void openSocket() throws Exception
@@ -103,7 +108,9 @@ public void openSocket() throws Exception
         }
     }
 
-    public void startPPPThread() throws Exception {
+    public void startPPPThread() throws Exception
+    {
+        logger.debug("startPPPThread()...");
         if (pppThread != null) {
             return;
         }
@@ -122,6 +129,7 @@ public void startPPPThread() throws Exception {
         pppThread = new PPPThread(config);
         pppThread.start();
         pppThread.waitForStatus("RUNNING", 5000);
+        logger.debug("startPPPThread(): OK");
     }
 
     public void openLocalSocket(int timeout) throws Exception {
@@ -191,6 +199,7 @@ public void startDispatchThread() {
         if (dispatchThread != null) return;
 
         logger.debug("startDispatchThread");
+        stopFlag = false;
         dispatchThread = new Thread(new Runnable() {
             @Override
             public void run() {
@@ -202,13 +211,16 @@ public void run() {
     }
 
     public void stopDispatchThread() {
-        if (dispatchThread == null) return;
-
         logger.debug("stopDispatchThread");
+        if (dispatchThread == null) return;
+        stopFlag = true;
         dispatchThread.interrupt();
         try {
             dispatchThread.join();
-        } catch (InterruptedException e) {
+        } catch (InterruptedException e)
+        {
+            logger.error("stopDispatchThread ", e);
+            Thread.currentThread().interrupt();
         }
         dispatchThread = null;
         logger.debug("stopDispatchThread: OK");
@@ -233,18 +245,23 @@ public void closeSocket() {
     public void dispatchProc() {
         logger.debug("dispatchProc.start");
         try {
-            while (true) {
+            while (!stopFlag)
+            {
                 Thread.sleep(0);
                 dispatchPackets();
             }
-        } catch (InterruptedException e) {
+        } catch (InterruptedException e)
+        {
+            logger.error("dispatchProc: ", e);
+            Thread.currentThread().interrupt();
         } catch (Exception e) {
             logger.error("dispatchProc: ", e);
         }
         logger.debug("dispatchProc.end");
     }
 
-    public void dispatchPackets() throws Exception {
+    public void dispatchPackets() throws Exception
+    {
         int count;
         byte[] data;
 
@@ -256,7 +273,6 @@ public void dispatchPackets() throws Exception {
             OutputStream os = localSocket.getOutputStream();
             if (os != null) {
                 os.write(data, 0, count);
-                os.flush();
             }
         }
         // read localSocket
diff --git a/Source/android/tinyJavaPosTester/src/com/shtrih/tinyjavapostester/MainActivity.java b/Source/android/tinyJavaPosTester/src/com/shtrih/tinyjavapostester/MainActivity.java
index b8202af9..c79bec42 100644
--- a/Source/android/tinyJavaPosTester/src/com/shtrih/tinyjavapostester/MainActivity.java
+++ b/Source/android/tinyJavaPosTester/src/com/shtrih/tinyjavapostester/MainActivity.java
@@ -582,6 +582,12 @@ protected String doInBackground(Void... params) {
                 printer.setLibraryContext(getApplicationContext());
                 // printer.addStatusUpdateListener(new FptrEventListener());
                 printer.claim(3000);
+                /*
+                for (int i=0;i<10;i++){
+                    printer.setDeviceEnabled(true);
+                    printer.setDeviceEnabled(false);
+                }
+                 */
                 printer.setDeviceEnabled(true);
                 model.ScocUpdaterStatus.set("");
                 printer.setParameter3(SmFptrConst.SMFPTR_DIO_PARAM_FIRMWARE_UPDATE_OBSERVER, this.params.observer);