diff --git a/java_console/io/src/main/java/com/rusefi/binaryprotocol/BinaryProtocol.java b/java_console/io/src/main/java/com/rusefi/binaryprotocol/BinaryProtocol.java
index 78cf63c05c..8951d9055b 100644
--- a/java_console/io/src/main/java/com/rusefi/binaryprotocol/BinaryProtocol.java
+++ b/java_console/io/src/main/java/com/rusefi/binaryprotocol/BinaryProtocol.java
@@ -467,7 +467,7 @@ public class BinaryProtocol {
         if (isClosed)
             return null;
         try {
-            LinkManager.assertCommunicationThread();
+            linkManager.assertCommunicationThread();
             dropPending();
 
             sendPacket(packet);
diff --git a/java_console/io/src/main/java/com/rusefi/io/LinkManager.java b/java_console/io/src/main/java/com/rusefi/io/LinkManager.java
index ce5d0b2bd2..ce403561f6 100644
--- a/java_console/io/src/main/java/com/rusefi/io/LinkManager.java
+++ b/java_console/io/src/main/java/com/rusefi/io/LinkManager.java
@@ -53,8 +53,20 @@ public class LinkManager implements Closeable {
             System.out.println(source + ": " + message);
         }
     };
+    private Thread communicationThread;
 
     public LinkManager() {
+        Future<?> future = submit(() -> {
+            communicationThread = Thread.currentThread();
+            System.out.println("communicationThread lookup DONE");
+        });
+        try {
+            // let's wait for the above trivial task to finish
+            future.get();
+        } catch (InterruptedException | ExecutionException e) {
+            throw new IllegalStateException(e);
+        }
+
         engineState = new EngineState(new EngineState.EngineStateListenerImpl() {
             @Override
             public void beforeLine(String fullLine) {
@@ -162,32 +174,12 @@ public class LinkManager implements Closeable {
             COMMUNICATION_QUEUE,
             new NamedThreadFactory("communication executor"));
 
-    static {
-/*
-        Future future = submit(new Runnable() {
-            @Override
-            public void run() {
-            // WAT? this is hanging?!
-                COMMUNICATION_THREAD = Thread.currentThread();
-                System.out.println("Done");
-            }
-        });
-        try {
-            // let's wait for the above trivial task to finish
-            future.get();
-            System.out.println("Done2");
-        } catch (InterruptedException | ExecutionException e) {
-            throw new IllegalStateException(e);
-        }
- */
+    public void assertCommunicationThread() {
+        if (Thread.currentThread() != communicationThread)
+            throw new IllegalStateException("Communication on wrong thread");
     }
 
-    public static void assertCommunicationThread() {
-//        if (Thread.currentThread() != COMMUNICATION_THREAD)
-//            throw new IllegalStateException("Communication on wrong thread");
-    }
-
-    private EngineState engineState;
+    private final EngineState engineState;
 
     public EngineState getEngineState() {
         return engineState;
diff --git a/java_console/shared_io/src/main/java/com/rusefi/rusEFIVersion.java b/java_console/shared_io/src/main/java/com/rusefi/rusEFIVersion.java
index 3945fa110c..d2692e536e 100644
--- a/java_console/shared_io/src/main/java/com/rusefi/rusEFIVersion.java
+++ b/java_console/shared_io/src/main/java/com/rusefi/rusEFIVersion.java
@@ -6,7 +6,7 @@ import java.net.URL;
 import java.util.concurrent.atomic.AtomicReference;
 
 public class rusEFIVersion {
-    public static final int CONSOLE_VERSION = 20211021;
+    public static final int CONSOLE_VERSION = 20211022;
     public static AtomicReference<String> firmwareVersion = new AtomicReference<>("N/A");
 
     public static long classBuildTimeMillis() {
diff --git a/java_console/ui/src/main/java/com/rusefi/ui/lua/LuaScriptPanel.java b/java_console/ui/src/main/java/com/rusefi/ui/lua/LuaScriptPanel.java
index c2b9b8dbf2..eaf44480f3 100644
--- a/java_console/ui/src/main/java/com/rusefi/ui/lua/LuaScriptPanel.java
+++ b/java_console/ui/src/main/java/com/rusefi/ui/lua/LuaScriptPanel.java
@@ -3,6 +3,7 @@ package com.rusefi.ui.lua;
 import com.opensr5.ConfigurationImage;
 import com.rusefi.binaryprotocol.BinaryProtocol;
 import com.rusefi.config.generated.Fields;
+import com.rusefi.io.LinkManager;
 import com.rusefi.ui.MessagesPanel;
 import com.rusefi.ui.UIContext;
 import com.rusefi.ui.storage.Node;
@@ -120,32 +121,36 @@ public class LuaScriptPanel {
     }
 
     void write() {
-        BinaryProtocol bp = this.context.getLinkManager().getCurrentStreamState();
-
         String script = scriptText.getText();
 
-        byte[] paddedScript = new byte[Fields.LUA_SCRIPT_SIZE];
-        byte[] scriptBytes = script.getBytes(StandardCharsets.US_ASCII);
-        System.arraycopy(scriptBytes, 0, paddedScript, 0, scriptBytes.length);
+        LinkManager linkManager = context.getLinkManager();
 
-        int idx = 0;
-        int remaining;
+        linkManager.submit(() -> {
+            BinaryProtocol bp = linkManager.getCurrentStreamState();
 
-        do {
-            remaining = paddedScript.length - idx;
-            int thisWrite = Math.min(remaining, Fields.BLOCKING_FACTOR);
+            byte[] paddedScript = new byte[Fields.LUA_SCRIPT_SIZE];
+            byte[] scriptBytes = script.getBytes(StandardCharsets.US_ASCII);
+            System.arraycopy(scriptBytes, 0, paddedScript, 0, scriptBytes.length);
 
-            bp.writeData(paddedScript, idx, Fields.luaScript_offset + idx, thisWrite);
+            int idx = 0;
+            int remaining;
 
-            idx += thisWrite;
+            do {
+                remaining = paddedScript.length - idx;
+                int thisWrite = Math.min(remaining, Fields.BLOCKING_FACTOR);
 
-            remaining -= thisWrite;
-        } while (remaining > 0);
+                bp.writeData(paddedScript, idx, Fields.luaScript_offset + idx, thisWrite);
 
-        bp.burn();
+                idx += thisWrite;
 
-        // Burning doesn't reload lua script, so we have to do it manually
-        resetLua();
+                remaining -= thisWrite;
+            } while (remaining > 0);
+
+            bp.burn();
+
+            // Burning doesn't reload lua script, so we have to do it manually
+            resetLua();
+        });
     }
 
     void resetLua() {