C:\Android\sdk\tools\jobb -d C:\folder\yourFolder\ -o C:\folder\air.com.example.MyApp\main.1000020.air.com.example.MyApp.obb -k secret-key -pn air.com.example.MyApp -pv 1000020

import flash.display.Sprite;
import flash.filesystem.File;
import flash.events.Event;
import flash.display.Loader;
import flash.net.URLRequest;
import com.nativeExtensions.apkExpansionFiles.APKCompleteEvent;
import com.nativeExtensions.apkExpansionFiles.APKExpansionFiles;
public function Main() {
  addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
}
private function onAddedToStage(evt:Event):void {
  var apkExpansionFiles:APKExpansionFiles = new APKExpansionFiles();
  apkExpansionFiles.addEventListener(APKCompleteEvent.APK_COMPLETE, onComplete);
  var BASE64_PUBLIC_KEY:String = "your_public_key";
  var mainVersion:String="1000020"; // the version of the APK that the file was uploaded
  var mainSize:String="18772022"; // the length of the file in bytes
  var mountMain:Boolean=true; // mount the obb file
  var secretKeyMain:String="secret-key"; //the secret jobb key
  //var patchVersion:String="1000020"; // the version of the APK that the file was uploaded
  //var patchSize:String="19619894"; // the length of the file in bytes
  //var mountPatch:Boolean=true; // mount the obb file
  //var secretKeyPatch:String="secret-key"; //the secret jobb key
  apkExpansionFiles.expansionFilesDelivered(BASE64_PUBLIC_KEY, true, mainVersion, mainSize, mountMain, secretKeyMain);
  //apkExpansionFiles.expansionFilesDelivered(BASE64_PUBLIC_KEY, true, mainVersion, mainSize, mountMain, secretKeyMain, patchVersion, patchSize, mountPatch, secretKeyPatch);
}
private function onComplete(e:APKCompleteEvent):void {
  var loader:Loader = new Loader();
  //var getExternalStorageDirectory:String = e.params.getExternalStorageDirectory; // the shared storage space
  var file:File = new File(e.params.outputDirMain+"myImage.jpg"); // the outpout Main folder
  //var file:File = new File(e.params.outputDirPatch+"myImage.jpg"); // the outpout Patch folder
  var request:URLRequest = new URLRequest(file.url);
  loader.load(request);
  this.addChild(loader);
}

<android>
  <colorDepth>16bit</colorDepth>
  <manifestAdditions>
    <![CDATA[
      <manifest>
        <uses-sdk android:minSdkVersion="9" /><!-- if you use jobb tool -->
        <uses-permission android:name="android.permission.PERMISSION_NAME" />
        <uses-permission android:name="com.android.vending.CHECK_LICENSE" />
        <uses-permission android:name="android.permission.INTERNET" />
        <uses-permission android:name="android.permission.WAKE_LOCK" />
        <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
        <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
        <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
        <application android:enabled="true">
          <activity>
            <intent-filter>
              <action android:name="android.intent.action.MAIN"/>
              <category android:name="android.intent.category.LAUNCHER"/>
            </intent-filter>
          </activity>
          <service android:name="com.apk.expansion.downloader.APKDownloaderService" />
          <receiver android:name="com.apk.expansion.downloader.APKAlarmReceiver" />
          <activity android:launchMode="singleInstance" android:name="com.apk.expansion.downloader.APKDownloaderActivity"
          android:theme="@android:style/Theme.Dialog"
          android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize" />
          <uses-library android:name="org.apache.http.legacy" android:required="false" />
        </application>
      </manifest>
    ]]>
  </manifestAdditions>
</android>
<extensions>
  <extensionID>com.nativeExtensions.APKExpansionFiles</extensionID>
</extensions>

import flash.display.Sprite;
import flash.filesystem.File;
import flash.events.Event;
import flash.display.Loader;
import flash.net.URLRequest;
import com.nativeExtensions.apkExpansionFiles.APKCompleteEvent;
import com.nativeExtensions.apkExpansionFiles.APKExpansionFiles;
public function Main() {
  addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
}
private function onAddedToStage(evt:Event):void {
  var apkExpansionFiles:APKExpansionFiles = new APKExpansionFiles();
  apkExpansionFiles.addEventListener(APKCompleteEvent.APK_COMPLETE, onComplete);
  var BASE64_PUBLIC_KEY:String = "your_public_key";
  var outputDir:String="/Android/data/"; // the outpout folder
  var mainVersion:String="1000020"; // the version of the APK that the file was uploaded
  var mainSize:String="18682320"; // the length of the file in bytes
  var mainUnzip:Boolean=true; // unzip the file
  //var patchVersion:String="1000020"; // the version of the APK that the file was uploaded
  //var patchSize:String="14923834"; // the length of the file in bytes
  //var patchUnzip:Boolean=true; // unzip the file
  apkExpansionFiles.expansionFilesDelivered(BASE64_PUBLIC_KEY, false, mainVersion, mainSize, mainUnzip, outputDir); // only main obb file
  //apkExpansionFiles.expansionFilesDelivered(BASE64_PUBLIC_KEY, false, mainVersion, mainSize, mainUnzip, outputDir, patchVersion, patchSize, patchUnzip); // main and patch obb files
}
private function onComplete(e:APKCompleteEvent):void {
  var loader:Loader = new Loader();
  //var getExternalStorageDirectory:String = e.params.getExternalStorageDirectory; // the shared storage space
  var file:File = new File(e.params.outputDirMain+"myImage.jpg"); // the outpout Main folder
  //var file:File = new File(e.params.outputDirPatch+"myImage.jpg"); // the outpout Patch folder
  var request:URLRequest = new URLRequest(file.url);
  loader.load(request);
  this.addChild(loader);
}

import flash.display.Sprite;
import flash.filesystem.File;
import flash.events.Event;
import flash.display.Loader;
import flash.net.URLRequest;
import com.nativeExtensions.apkExpansionFiles.APKCompleteEvent;
import com.nativeExtensions.apkExpansionFiles.APKExpansionFiles;
public function Main() {
  addEventListener(Event.ADDED_TO_STAGE, onAddedToStage);
}
private var mainVersion:String="1000020"; // the version of the APK that the file was uploaded
//private var patchVersion:String="1000020"; // the version of the APK that the file was uploaded
private function onAddedToStage(evt:Event):void {
  var apkExpansionFiles:APKExpansionFiles = new APKExpansionFiles();
  apkExpansionFiles.addEventListener(APKCompleteEvent.APK_COMPLETE, onComplete);
  var BASE64_PUBLIC_KEY:String = "your_public_key";
  var mainSize:String="18682320"; // the length of the file in bytes
  var mainUnzip:Boolean=false; // unzip the file
  //var patchSize:String="14923834"; // the length of the file in bytes
  //var patchUnzip:Boolean=false; // unzip the file
  apkExpansionFiles.expansionFilesDelivered(BASE64_PUBLIC_KEY, false, mainVersion, mainSize, mainUnzip); // only main obb file
  //apkExpansionFiles.expansionFilesDelivered(BASE64_PUBLIC_KEY, false, mainVersion, mainSize, mainUnzip, null, patchVersion, patchSize, patchUnzip); // main and patch obb files
}
private function onComplete(e:APKCompleteEvent):void {
  var mainObbFile:File = new File(e.params.getExternalStorageDirectory+"/Android/obb/"+e.params.packageName+"/main."+mainVersion+"."+e.params.packageName+".obb");
  var loader:Loader = new Loader();
  var request:URLRequest = new URLRequest(mainObbFile.url);
  loader.load(request);
  this.addChild(loader);
}