diff --git a/shell/android-studio/reicast/src/main/java/com/reicast/emulator/FileBrowser.java b/shell/android-studio/reicast/src/main/java/com/reicast/emulator/FileBrowser.java
index 23042e977..5b8c375ab 100644
--- a/shell/android-studio/reicast/src/main/java/com/reicast/emulator/FileBrowser.java
+++ b/shell/android-studio/reicast/src/main/java/com/reicast/emulator/FileBrowser.java
@@ -176,7 +176,7 @@ public class FileBrowser extends Fragment {
 		if (!home.exists() || !home.isDirectory()) {
 			showToastMessage(getActivity().getString(R.string.config_home), Snackbar.LENGTH_LONG);
 		} else {
-			(new installGraphics()).execute();
+			installButtons();
 		}
 
 		if (!ImgBrowse && !games) {
@@ -186,47 +186,37 @@ public class FileBrowser extends Fragment {
 		}
 	}
 
-	private class installGraphics extends AsyncTask<String, Integer, String> {
-		@Override
-		protected String doInBackground(String... params) {
-			try {
-				File buttons = null;
-				String theme = mPrefs.getString(Config.pref_theme, null);
-				if (theme != null) {
-					buttons = new File(theme);
-				}
-				File file = new File(home_directory, "data/buttons.png");
-				if (buttons != null && buttons.exists()) {
-					InputStream in = new FileInputStream(buttons);
-					OutputStream out = new FileOutputStream(file);
-
-					// Transfer bytes from in to out
-					byte[] buf = new byte[1024];
-					int len;
-					while ((len = in.read(buf)) > 0) {
-						out.write(buf, 0, len);
-					}
-					in.close();
-					out.close();
-				} else if (!file.exists()) {
-					org.apache.commons.io.FileUtils.touch(file);
-					InputStream png = getActivity().getAssets().open("buttons.png");
-					OutputStream fo = new FileOutputStream(file);
-					byte[] buffer = new byte[4096];
-					int read;
-					while ((read = png.read(buffer)) != -1) {
-						fo.write(buffer, 0, read);
-					}
-					png.close();
-					fo.flush();
-					fo.close();
-				}
-			} catch (FileNotFoundException fnf) {
-				fnf.printStackTrace();
-			} catch (IOException ioe) {
-				ioe.printStackTrace();
+	private void installButtons() {
+		try {
+			File buttons = null;
+			String theme = mPrefs.getString(Config.pref_theme, null);
+			if (theme != null) {
+				buttons = new File(theme);
 			}
-			return null;
+			File file = new File(home_directory, "data/buttons.png");
+			InputStream in = null;
+			if (buttons != null && buttons.exists()) {
+				in = new FileInputStream(buttons);
+			} else if (!file.exists() || file.length() == 0) {
+				in = getActivity().getAssets().open("buttons.png");
+			}
+			if (in != null) {
+				OutputStream out = new FileOutputStream(file);
+
+				// Transfer bytes from in to out
+				byte[] buf = new byte[4096];
+				int len;
+				while ((len = in.read(buf)) != -1) {
+					out.write(buf, 0, len);
+				}
+				in.close();
+				out.flush();
+				out.close();
+			}
+		} catch (FileNotFoundException fnf) {
+			fnf.printStackTrace();
+		} catch (IOException ioe) {
+			ioe.printStackTrace();
 		}
 	}
 
diff --git a/shell/android-studio/reicast/src/main/java/com/reicast/emulator/emu/JNIdc.java b/shell/android-studio/reicast/src/main/java/com/reicast/emulator/emu/JNIdc.java
index 716a2f006..f99168104 100644
--- a/shell/android-studio/reicast/src/main/java/com/reicast/emulator/emu/JNIdc.java
+++ b/shell/android-studio/reicast/src/main/java/com/reicast/emulator/emu/JNIdc.java
@@ -8,6 +8,7 @@ public final class JNIdc
 	public static native void config(String dirName);
 	public static native void init(String fileName);
 	public static native void run(Object track);
+	public static native void stop();
 	public static native void terminate();
 
 	public static native int send(int cmd, int opt);
diff --git a/shell/android-studio/reicast/src/main/jni/src/Android.cpp b/shell/android-studio/reicast/src/main/jni/src/Android.cpp
index 0d6b5bddd..827ce3fdb 100644
--- a/shell/android-studio/reicast/src/main/jni/src/Android.cpp
+++ b/shell/android-studio/reicast/src/main/jni/src/Android.cpp
@@ -25,6 +25,7 @@ extern "C"
   JNIEXPORT void JNICALL Java_com_reicast_emulator_emu_JNIdc_config(JNIEnv *env,jobject obj,jstring dirName)  __attribute__((visibility("default")));
   JNIEXPORT void JNICALL Java_com_reicast_emulator_emu_JNIdc_init(JNIEnv *env,jobject obj,jstring fileName)  __attribute__((visibility("default")));
   JNIEXPORT void JNICALL Java_com_reicast_emulator_emu_JNIdc_run(JNIEnv *env,jobject obj,jobject emu_thread)  __attribute__((visibility("default")));
+  JNIEXPORT void JNICALL Java_com_reicast_emulator_emu_JNIdc_stop(JNIEnv *env,jobject obj)  __attribute__((visibility("default")));
   JNIEXPORT void JNICALL Java_com_reicast_emulator_emu_JNIdc_terminate(JNIEnv *env,jobject obj)  __attribute__((visibility("default")));
 
   JNIEXPORT jint JNICALL Java_com_reicast_emulator_emu_JNIdc_send(JNIEnv *env,jobject obj,jint id, jint v)  __attribute__((visibility("default")));
@@ -158,6 +159,7 @@ void egl_stealcntx();
 void SetApplicationPath(wchar *path);
 int dc_init(int argc,wchar* argv[]);
 void dc_run();
+//void dc_stop();
 void dc_term();
 void mcfg_Create(MapleDeviceType type,u32 bus,u32 port);
 
@@ -368,6 +370,11 @@ JNIEXPORT void JNICALL Java_com_reicast_emulator_emu_JNIdc_setupVmu(JNIEnv *env,
 	//jpix=env->NewByteArray(1536);
 }
 
+JNIEXPORT void JNICALL Java_com_reicast_emulator_emu_JNIdc_stop(JNIEnv *env,jobject obj)
+{
+//	dc_stop();
+}
+
 JNIEXPORT void JNICALL Java_com_reicast_emulator_emu_JNIdc_terminate(JNIEnv *env,jobject obj)
 {
 	dc_term();