diff --git a/build.gradle b/build.gradle
index 6356aab..d3ff69d 100644
--- a/build.gradle
+++ b/build.gradle
@@ -5,7 +5,7 @@ buildscript {
         jcenter()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:1.0.0'
+        classpath 'com.android.tools.build:gradle:1.1.0'
 
         // NOTE: Do not place your application dependencies here; they belong
         // in the individual module build.gradle files
diff --git a/dfu/build.gradle b/dfu/build.gradle
index 922fe41..fbbbbae 100644
--- a/dfu/build.gradle
+++ b/dfu/build.gradle
@@ -7,12 +7,12 @@ ext {
 }
 
 android {
-    compileSdkVersion 21
+    compileSdkVersion 22
     buildToolsVersion "21.1.2"
 
     defaultConfig {
         minSdkVersion 18
-        targetSdkVersion 21
+        targetSdkVersion 22
         versionCode 2
         versionName "0.6"
     }
@@ -26,7 +26,7 @@ android {
 
 dependencies {
     compile fileTree(dir: 'libs', include: ['*.jar'])
-    compile 'com.android.support:support-v4:21.0.3'
+    compile 'com.android.support:support-v4:22.0.0'
     compile 'com.google.code.gson:gson:2.3.1'
 }
 
diff --git a/dfu/dfu.iml b/dfu/dfu.iml
index b359374..7763777 100644
--- a/dfu/dfu.iml
+++ b/dfu/dfu.iml
@@ -12,9 +12,9 @@
         <option name="SELECTED_TEST_ARTIFACT" value="_android_test_" />
         <option name="ASSEMBLE_TASK_NAME" value="assembleDebug" />
         <option name="COMPILE_JAVA_TASK_NAME" value="compileDebugSources" />
-        <option name="ASSEMBLE_TEST_TASK_NAME" value="assembleDebugTest" />
+        <option name="ASSEMBLE_TEST_TASK_NAME" value="assembleDebugAndroidTest" />
         <option name="SOURCE_GEN_TASK_NAME" value="generateDebugSources" />
-        <option name="TEST_SOURCE_GEN_TASK_NAME" value="generateDebugTestSources" />
+        <option name="TEST_SOURCE_GEN_TASK_NAME" value="generateDebugAndroidTestSources" />
         <option name="ALLOW_USER_CONFIGURATION" value="false" />
         <option name="MANIFEST_FILE_RELATIVE_PATH" value="/src/main/AndroidManifest.xml" />
         <option name="RES_FOLDER_RELATIVE_PATH" value="/src/main/res" />
@@ -26,7 +26,7 @@
   </component>
   <component name="NewModuleRootManager" inherit-compiler-output="false">
     <output url="file://$MODULE_DIR$/build/intermediates/classes/debug" />
-    <output-test url="file://$MODULE_DIR$/build/intermediates/classes/test/debug" />
+    <output-test url="file://$MODULE_DIR$/build/intermediates/classes/androidTest/debug" />
     <exclude-output />
     <content url="file://$MODULE_DIR$">
       <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/debug" isTestSource="false" generated="true" />
@@ -35,12 +35,12 @@
       <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/debug" isTestSource="false" generated="true" />
       <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/debug" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/build/generated/res/generated/debug" type="java-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/test/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/test/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/test/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/test/debug" isTestSource="true" generated="true" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/test/debug" type="java-test-resource" />
-      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/generated/test/debug" type="java-test-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/r/androidTest/debug" isTestSource="true" generated="true" />
+      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/aidl/androidTest/debug" isTestSource="true" generated="true" />
+      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/buildConfig/androidTest/debug" isTestSource="true" generated="true" />
+      <sourceFolder url="file://$MODULE_DIR$/build/generated/source/rs/androidTest/debug" isTestSource="true" generated="true" />
+      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/rs/androidTest/debug" type="java-test-resource" />
+      <sourceFolder url="file://$MODULE_DIR$/build/generated/res/generated/androidTest/debug" type="java-test-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/res" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/resources" type="java-resource" />
       <sourceFolder url="file://$MODULE_DIR$/src/debug/assets" type="java-resource" />
@@ -84,11 +84,11 @@
       <excludeFolder url="file://$MODULE_DIR$/build/outputs" />
       <excludeFolder url="file://$MODULE_DIR$/build/tmp" />
     </content>
-    <orderEntry type="jdk" jdkName="Android API 21 Platform" jdkType="Android SDK" />
+    <orderEntry type="jdk" jdkName="Android API 22 Platform" jdkType="Android SDK" />
     <orderEntry type="sourceFolder" forTests="false" />
     <orderEntry type="library" exported="" name="gson-2.3.1" level="project" />
-    <orderEntry type="library" exported="" name="support-annotations-21.0.3" level="project" />
-    <orderEntry type="library" exported="" name="support-v4-21.0.3" level="project" />
+    <orderEntry type="library" exported="" name="support-v4-22.0.0" level="project" />
+    <orderEntry type="library" exported="" name="support-annotations-22.0.0" level="project" />
   </component>
 </module>
 
diff --git a/dfu/src/main/java/no/nordicsemi/android/dfu/DfuBaseService.java b/dfu/src/main/java/no/nordicsemi/android/dfu/DfuBaseService.java
index 689aff0..4803895 100644
--- a/dfu/src/main/java/no/nordicsemi/android/dfu/DfuBaseService.java
+++ b/dfu/src/main/java/no/nordicsemi/android/dfu/DfuBaseService.java
@@ -1838,11 +1838,15 @@ public abstract class DfuBaseService extends IntentService {
 
 		final String[] projection = {MediaStore.Images.Media.DISPLAY_NAME};
 		final Cursor cursor = getContentResolver().query(stream, projection, null, null, null);
-		if (cursor.moveToNext()) {
-			final String fileName = cursor.getString(0 /* DISPLAY_NAME*/);
+		try {
+			if (cursor.moveToNext()) {
+				final String fileName = cursor.getString(0 /* DISPLAY_NAME*/);
 
-			if (fileName.toLowerCase(Locale.US).endsWith("hex"))
-				return new HexInputStream(is, mbrSize);
+				if (fileName.toLowerCase(Locale.US).endsWith("hex"))
+					return new HexInputStream(is, mbrSize);
+			}
+		} finally {
+			cursor.close();
 		}
 		return is;
 	}