diff --git a/build.gradle b/build.gradle
index d96ad7f..dd61582 100644
--- a/build.gradle
+++ b/build.gradle
@@ -12,7 +12,7 @@ dependencies {
     // windows/linux/darwin
     compile group: 'org.usb4java', name: 'usb4java', version: '1.3.0'
     // todo: someone one day should move android into sub-project
-    compile group: 'com.google.android', name: 'android', version: '4.0.1.2'
+    implementation files('lib/android.jar')
 
 
     testImplementation group: 'junit', name: 'junit', version: '4.13'
diff --git a/lib/android.jar b/lib/android.jar
new file mode 100644
index 0000000..71cf198
Binary files /dev/null and b/lib/android.jar differ
diff --git a/lib/android.md b/lib/android.md
new file mode 100644
index 0000000..f49d1f8
--- /dev/null
+++ b/lib/android.md
@@ -0,0 +1 @@
+mvn central has android jars up to version 4 (year 2015) I was not able to find a source for newer API jars. We need Android 5 here.
\ No newline at end of file
diff --git a/src/main/java/com/rusefi/dfu/android/DfuDeviceLocator.java b/src/main/java/com/rusefi/dfu/android/DfuDeviceLocator.java
index b776c66..11ccc02 100644
--- a/src/main/java/com/rusefi/dfu/android/DfuDeviceLocator.java
+++ b/src/main/java/com/rusefi/dfu/android/DfuDeviceLocator.java
@@ -3,13 +3,14 @@ package com.rusefi.dfu.android;
 import android.hardware.usb.*;
 
 import com.rusefi.dfu.DfuLogic;
+import com.rusefi.dfu.DfuSeFlashDescriptor;
+import com.rusefi.dfu.FlashRange;
 //import com.rusefi.dfu.LogUtil;
 //import org.apache.commons.logging.Log;
 
 public class DfuDeviceLocator {
 //    private static final Log log = LogUtil.getLog(DfuDeviceLocator.class);
 
-
     public static UsbDevice findDevice(UsbManager usbManager) {
         for (final UsbDevice usbDevice : usbManager.getDeviceList().values()) {
             if (usbDevice.getVendorId() == DfuLogic.ST_VENDOR && usbDevice.getProductId() == DfuLogic.ST_DFU_PRODUCT) {
@@ -19,20 +20,16 @@ public class DfuDeviceLocator {
         return null;
     }
 
-
-    public short openDfu(UsbManager usbManager, UsbDevice dfuDevice) {
-
-        for (int interfaceIndex = 0; interfaceIndex < dfuDevice.getInterfaceCount(); interfaceIndex++) {
-            UsbInterface usbInterface = dfuDevice.getInterface(interfaceIndex);
-
-        }
-
+    public Result openDfu(UsbManager usbManager, UsbDevice dfuDevice) {
         for (int interfaceIndex = 0; interfaceIndex < dfuDevice.getInterfaceCount(); interfaceIndex++) {
             UsbInterface usbInterface = dfuDevice.getInterface(interfaceIndex);
+            String stringDescriptor = usbInterface.getName();
             if (usbInterface.getInterfaceClass() == DfuLogic.USB_CLASS_APP_SPECIFIC &&
-                    usbInterface.getInterfaceSubclass() == DfuLogic.DFU_SUBCLASS) {
+                    usbInterface.getInterfaceSubclass() == DfuLogic.DFU_SUBCLASS &&
+                    stringDescriptor.contains(DfuLogic.FLASH_TAG)) {
 //                log.debug(String.format("Found DFU interface: " + usbInterface));
 
+                FlashRange flashRange = DfuSeFlashDescriptor.parse(stringDescriptor);
 
                 UsbDeviceConnection connection = usbManager.openDevice(dfuDevice);
 
@@ -47,14 +44,33 @@ public class DfuDeviceLocator {
                     throw new IllegalStateException("Unexpected USB_DT_DFU");
                 int transferSize = rawDescs[69] * 256 + rawDescs[68];
 
-                System.out.println(rawDescs + " " + transferSize);
-
+                return new Result(connection, flashRange, transferSize);
             }
-
-
         }
-
-        return 0;
+        return null;
     }
 
+    private class Result {
+        private final UsbDeviceConnection connection;
+        private final FlashRange flashRange;
+        private final int transferSize;
+
+        public Result(UsbDeviceConnection connection, FlashRange flashRange, int transferSize) {
+            this.connection = connection;
+            this.flashRange = flashRange;
+            this.transferSize = transferSize;
+        }
+
+        public UsbDeviceConnection getConnection() {
+            return connection;
+        }
+
+        public FlashRange getFlashRange() {
+            return flashRange;
+        }
+
+        public int getTransferSize() {
+            return transferSize;
+        }
+    }
 }