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 bead76bb7f..16eff53cb0 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
@@ -322,7 +322,7 @@ public class BinaryProtocol implements BinaryProtocolCommands {
         setController(newVersion);
     }
 
-    private byte[] receivePacket(String msg, boolean allowLongResponse) throws EOFException {
+    private byte[] receivePacket(String msg, boolean allowLongResponse) throws IOException {
         long start = System.currentTimeMillis();
         synchronized (ioLock) {
             return incomingData.getPacket(msg, allowLongResponse, start);
@@ -465,12 +465,6 @@ public class BinaryProtocol implements BinaryProtocolCommands {
     }
 
     public void writeData(byte[] content, Integer offset, int size) {
-        if (size > Fields.BLOCKING_FACTOR) {
-            writeData(content, offset, Fields.BLOCKING_FACTOR);
-            writeData(content, offset + Fields.BLOCKING_FACTOR, size - Fields.BLOCKING_FACTOR);
-            return;
-        }
-
         isBurnPending = true;
 
         byte packet[] = new byte[5 + size];
diff --git a/java_console/io/src/main/java/com/rusefi/binaryprotocol/IncomingDataBuffer.java b/java_console/io/src/main/java/com/rusefi/binaryprotocol/IncomingDataBuffer.java
index 4712cacd5b..3630e21ffd 100644
--- a/java_console/io/src/main/java/com/rusefi/binaryprotocol/IncomingDataBuffer.java
+++ b/java_console/io/src/main/java/com/rusefi/binaryprotocol/IncomingDataBuffer.java
@@ -69,7 +69,7 @@ public class IncomingDataBuffer {
         if (packetSize < 0)
             return null;
         if (!allowLongResponse && packetSize > Math.max(Fields.BLOCKING_FACTOR, Fields.TS_OUTPUT_SIZE) + 10)
-            return null;
+            throw new IllegalArgumentException(packetSize + " packet while not allowLongResponse");
 
         isTimeout = waitForBytes(loggingPrefix + msg + " body", start, packetSize + 4);
         if (isTimeout)
diff --git a/java_console/io/src/main/java/com/rusefi/io/commands/HelloCommand.java b/java_console/io/src/main/java/com/rusefi/io/commands/HelloCommand.java
index d09b3dd90d..e1eb87f527 100644
--- a/java_console/io/src/main/java/com/rusefi/io/commands/HelloCommand.java
+++ b/java_console/io/src/main/java/com/rusefi/io/commands/HelloCommand.java
@@ -25,7 +25,7 @@ public class HelloCommand implements Command {
 
     @Nullable
     public static String getHelloResponse(IncomingDataBuffer incomingData) throws EOFException {
-        byte[] response = incomingData.getPacket("[hello]");
+        byte[] response = incomingData.getPacket("[hello]", true);
         if (!checkResponseCode(response, BinaryProtocolCommands.RESPONSE_OK))
             return null;
         return new String(response, 1, response.length - 1);