diff --git a/app/build.gradle b/app/build.gradle
index 75ad731..b7f2f11 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -6,7 +6,7 @@ model {
 
         defaultConfig {
             applicationId "org.ab.x48"
-            minSdkVersion.apiLevel 8
+            minSdkVersion.apiLevel 9
             targetSdkVersion.apiLevel 24
         }
 
@@ -22,4 +22,7 @@ model {
             }
         }
     }
+}
+dependencies {
+    compile 'com.getkeepsafe.relinker:relinker:1.2.2'
 }
\ No newline at end of file
diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml
index 65516ad..b538274 100644
--- a/app/src/main/AndroidManifest.xml
+++ b/app/src/main/AndroidManifest.xml
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
-      package="org.ab.x48" android:installLocation="auto" android:versionCode="67" android:versionName="1.67">
+      package="org.ab.x48" android:installLocation="auto" android:versionCode="69" android:versionName="1.69">
     <application android:icon="@drawable/icon" android:label="@string/app_name">
         <activity android:name=".X48"
                   android:label="@string/app_name"
diff --git a/app/src/main/java/org/ab/x48/HPView.java b/app/src/main/java/org/ab/x48/HPView.java
index 62caa67..649eddc 100644
--- a/app/src/main/java/org/ab/x48/HPView.java
+++ b/app/src/main/java/org/ab/x48/HPView.java
@@ -118,7 +118,6 @@ public class HPView extends SurfaceView implements SurfaceHolder.Callback, Runna
 		audiobuf = new short [44100]; // 1s worth
 		track = new AudioTrack(AudioManager.STREAM_MUSIC, 44100, AudioFormat.CHANNEL_OUT_MONO, AudioFormat.ENCODING_PCM_16BIT, 16384, AudioTrack.MODE_STREAM);
 		annImages = new Bitmap [6];
-		updateContrast();
 		matrixScreen = new Matrix();
 		matrixBack= new Matrix();
 		annImages [0] = BitmapFactory.decodeResource(x48.getResources(), R.drawable.ann01);
diff --git a/app/src/main/java/org/ab/x48/X48.java b/app/src/main/java/org/ab/x48/X48.java
index 09d0f69..d7eb1f6 100644
--- a/app/src/main/java/org/ab/x48/X48.java
+++ b/app/src/main/java/org/ab/x48/X48.java
@@ -16,6 +16,9 @@ import android.content.SharedPreferences;
 import android.content.SharedPreferences.Editor;
 import android.content.res.Configuration;
 import android.os.Bundle;
+import android.os.Handler;
+import android.os.Looper;
+import android.os.Message;
 import android.preference.PreferenceManager;
 import android.util.Log;
 import android.view.Menu;
@@ -23,6 +26,8 @@ import android.view.MenuItem;
 import android.view.Window;
 import android.view.WindowManager.LayoutParams;
 
+import com.getkeepsafe.relinker.ReLinker;
+
 public class X48 extends Activity {
     
 	private HPView mainView;
@@ -38,26 +43,57 @@ public class X48 extends Activity {
 	
 	private static EmulatorThread thread;
 	private static Timer SIGALRM;
+	private Handler mHandler;
 
-	private static boolean errorLib;
-	
     // http://www.hpcalc.org/hp48/pc/emulators/gxrom-r.zip
+
+	private ReLinker.Logger logcatLogger = new ReLinker.Logger() {
+		@Override
+		public void log(String message) {
+			Log.d("ReLinker", message);
+		}
+	};
 	
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
-		if (errorLib) {
-			showDialog(DIALOG_LIB_KO);
-			return;
-		}
+
 		//Log.i("x48", "starting activity");
 		boolean firstLaunch = !AssetUtil.copyAsset(this, getResources().getAssets(), false);
 
-		readyToGo() ;
-        if (!AssetUtil.isFilesReady(this)) {
-        	showDialog(DIALOG_ROM_KO);
-			return;
-        }
+		requestWindowFeature(Window.FEATURE_NO_TITLE);
+		requestWindowFeature(Window.FEATURE_PROGRESS);
+		setContentView(R.layout.main);
+		mainView = (HPView) findViewById(R.id.hpview);
+
+		mHandler = new Handler(Looper.getMainLooper()) {
+			@Override
+			public void handleMessage(Message inputMessage) {
+				if (inputMessage.what == 1) {
+					readyToGo();
+					if (!AssetUtil.isFilesReady(X48.this)) {
+						showDialog(DIALOG_ROM_KO);
+						return;
+					}
+				} else {
+					showDialog(DIALOG_LIB_KO);
+				}
+			}
+		};
+
+		ReLinker.recursively().log(logcatLogger).loadLibrary(X48.this, "droid48", new ReLinker.LoadListener() {
+
+			@Override
+			public void success() {
+				mHandler.obtainMessage(1).sendToTarget();
+			}
+
+			@Override
+			public void failure(Throwable t) {
+				mHandler.obtainMessage(0).sendToTarget();
+			}
+		});
+
     }
     
     // http://stackoverflow.com/questions/9996333/openoptionsmenu-function-not-working-in-ics
@@ -81,19 +117,16 @@ public class X48 extends Activity {
     }
  
     public void readyToGo() {
-    	hp48s = PreferenceManager.getDefaultSharedPreferences(this).getBoolean("hp48s", false);
-    	
-    	requestWindowFeature(Window.FEATURE_NO_TITLE);
-        requestWindowFeature(Window.FEATURE_PROGRESS);
-        setContentView(R.layout.main);
-        mainView = (HPView) findViewById(R.id.hpview);
-        
-        checkPrefs();
+		hp48s = PreferenceManager.getDefaultSharedPreferences(this).getBoolean("hp48s", false);
+
+    	checkPrefs();
 
 		thread = new EmulatorThread(this);
     	thread.start();
     	mainView.resume();
-    }
+		mainView.updateContrast();
+
+	}
     
 
     
@@ -172,13 +205,6 @@ public class X48 extends Activity {
     	mainView.emulatorReady();
     }
 
-    static {
-		try {
-			System.loadLibrary("droid48");
-		} catch (java.lang.UnsatisfiedLinkError e) {
-			errorLib = true;
-		}
-    }
 	@Override
 	protected void onResume() {
 		super.onResume();
@@ -191,7 +217,8 @@ public class X48 extends Activity {
 		SIGALRM.schedule(new TimerTask() {
 			@Override
 			public void run() {
-				SIGALRM();
+				if (thread != null)
+					SIGALRM();
 			}
 		}, 0, 20);
 		if (mainView  != null)
diff --git a/build.gradle b/build.gradle
index 0aa8572..b404859 100644
--- a/build.gradle
+++ b/build.gradle
@@ -2,6 +2,7 @@
 buildscript {
     repositories {
         jcenter()
+        maven { url "https://jitpack.io" }
     }
     dependencies {
         classpath 'com.android.tools.build:gradle-experimental:0.8.3'