diff --git a/java_console/ui/src/main/java/com/rusefi/maintenance/OutputChannelsHelper.java b/java_console/ui/src/main/java/com/rusefi/maintenance/OutputChannelsHelper.java
new file mode 100644
index 0000000000..dba21c1c4a
--- /dev/null
+++ b/java_console/ui/src/main/java/com/rusefi/maintenance/OutputChannelsHelper.java
@@ -0,0 +1,64 @@
+package com.rusefi.maintenance;
+
+import com.devexperts.logging.Logging;
+import com.opensr5.ini.field.IniField;
+import com.rusefi.SerialPortScanner;
+import com.rusefi.binaryprotocol.BinaryProtocol;
+import com.rusefi.core.SensorCentral;
+import com.rusefi.io.UpdateOperationCallbacks;
+import com.rusefi.panama.PanamaHelper;
+
+import java.util.Optional;
+import java.util.concurrent.atomic.AtomicInteger;
+
+import static com.devexperts.logging.Logging.getLogging;
+
+public class OutputChannelsHelper {
+    private static final Logging log = getLogging(OutputChannelsHelper.class);
+
+    public static Optional<Integer> readMcuSerial(
+        final SerialPortScanner.PortResult ecuPort,
+        final UpdateOperationCallbacks callbacks
+    ) {
+        return BinaryProtocolExecutor.executeWithSuspendedPortScanner(
+            ecuPort.port,
+            callbacks,
+            (binaryProtocol) -> {
+                try {
+                    return readMcuSerial(binaryProtocol, callbacks);
+                } catch (final Exception e) {
+                    log.error("Reading `MCUSERIAL` output channel failed:", e);
+                    callbacks.logLine("Reading `MCUSERIAL` output channel failed");
+                    return Optional.empty();
+                }
+            },
+            Optional.empty(),
+            false
+        );
+    }
+
+    private static Optional<Integer> readMcuSerial(
+        final BinaryProtocol binaryProtocol,
+        final UpdateOperationCallbacks callbacks
+    ) {
+        callbacks.logLine("Reading `MCUSERIAL` output channel...");
+        Optional<Integer> result = Optional.empty();
+        final IniField mcuSerialField = PanamaHelper.getIniField(binaryProtocol);
+        if (mcuSerialField != null) {
+            final AtomicInteger mcuSerial = new AtomicInteger();
+            SensorCentral.getInstance().addListener(() -> {
+                mcuSerial.set(PanamaHelper.getMcuSerial(mcuSerialField));
+            });
+            if (binaryProtocol.requestOutputChannels()) {
+                callbacks.logLine(String.format("`MCUSERIAL` is %d", mcuSerial.get()));
+                result = Optional.of(mcuSerial.get());
+            } else {
+                callbacks.logLine("Failed to request output channels...");
+            }
+        } else {
+            callbacks.logLine("Please update firmware to use this feature...");
+        }
+        return result;
+    }
+
+}
diff --git a/java_console/ui/src/main/java/com/rusefi/maintenance/TuneUploader.java b/java_console/ui/src/main/java/com/rusefi/maintenance/TuneUploader.java
index bb787d65d8..490a423eef 100644
--- a/java_console/ui/src/main/java/com/rusefi/maintenance/TuneUploader.java
+++ b/java_console/ui/src/main/java/com/rusefi/maintenance/TuneUploader.java
@@ -1,7 +1,9 @@
 package com.rusefi.maintenance;
 
+import com.opensr5.ini.field.IniField;
 import com.rusefi.SerialPortScanner;
 import com.rusefi.binaryprotocol.BinaryProtocolLocalCache;
+import com.rusefi.config.generated.TsOutputs;
 import com.rusefi.io.UpdateOperationCallbacks;
 import com.rusefi.panama.PanamaClient;
 import com.rusefi.ui.basic.InstanceNameEditor;
@@ -39,13 +41,12 @@ public enum TuneUploader {
             return false;
         }
 
-        // todo!
-        // IniField mcuSerialField = PanamaHelper.getIniField(linkManager);
-//        if (mcuSerialField == null) {
-//           addMessage("Please update firmware to use this feature");
-        // return;
-//        }
-        int mcuSerial = 1231234; // todo
+        final Optional<Integer> receivedMcuSerial = OutputChannelsHelper.readMcuSerial(ecuPort, callbacks);
+        if (!receivedMcuSerial.isPresent()) {
+            callbacks.logLine("Failed to read `MCUSERIAL` output channel");
+            return false;
+        }
+        final int mcuSerial = receivedMcuSerial.get();
 
         final String calibrationsToUploadFileName = CALIBRATIONS_TO_UPLOAD_FILE_NAME + ".msq";
         if (PanamaClient.uploadFile(panamaUrl,
@@ -54,18 +55,20 @@ public enum TuneUploader {
             mcuSerial
         )) {
             callbacks.logLine(String.format(
-                "File `%s` is successfully uploaded to `%s` for `%s`",
+                "File `%s` is successfully uploaded to `%s` for `%s` (MCUSERIAL=%d)",
                 calibrationsToUploadFileName,
                 panamaUrl,
-                instanceName
+                instanceName,
+                mcuSerial
             ));
             result = true;
         } else {
             callbacks.logLine(String.format(
-                "Failed to upload file `%s` to `%s` for `%s`",
+                "Failed to upload file `%s` to `%s` for `%s` (MCUSERIAL=%d)",
                 calibrationsToUploadFileName,
                 panamaUrl,
-                instanceName
+                instanceName,
+                mcuSerial
             ));
         }
         return result;