diff --git a/app/build.gradle b/app/build.gradle
index 3a3e91c..efb1374 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -9,8 +9,8 @@ android {
         applicationId "com.zane.smapiinstaller"
         minSdkVersion 19
         targetSdkVersion 28
-        versionCode 4
-        versionName "1.1.1"
+        versionCode 5
+        versionName "1.1.2"
 
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         multiDexEnabled true
diff --git a/app/src/main/assets/downloadable_content_list.json b/app/src/main/assets/downloadable_content_list.json
index 3fe36b6..83ad05e 100644
--- a/app/src/main/assets/downloadable_content_list.json
+++ b/app/src/main/assets/downloadable_content_list.json
@@ -1,19 +1,19 @@
 {
-  "version": 1,
+  "version": 2,
   "contents": [
     {
       "type": "COMPAT",
       "name": "SMAPI for 1.4.5.137",
       "assetPath": "compat/137/",
       "description": "SMAPI compat package for game 1.4.4.128 - 1.4.5.137",
-      "url": "http://dl.zaneyork.cn/compat/smapi_137.zip",
+      "url": "http://zaneyork.cn/download/compat/smapi_137.zip",
       "hash": "bd16e8e4cb52d636e24c6a2d2309b66a60e492d2b97c1b8f6a519c04ac42ebdc"
     },
     {
       "type": "LOCALE",
       "name": "中文汉化v2.4",
       "description": "简体中文语言包，感谢Wabi-Sabi提供",
-      "url": "http://dl.zaneyork.cn/locale/locale_pack_zh_2.4.zip",
+      "url": "http://zaneyork.cn/download/locale/locale_pack_zh_2.4.zip",
       "hash": "59be19240160de61046f05619f3e448d180137e0989feb537e392a014588615f"
     }
   ]
diff --git a/app/src/main/java/com/zane/smapiinstaller/logic/CommonLogic.java b/app/src/main/java/com/zane/smapiinstaller/logic/CommonLogic.java
index 56cb3e6..b9f36b1 100644
--- a/app/src/main/java/com/zane/smapiinstaller/logic/CommonLogic.java
+++ b/app/src/main/java/com/zane/smapiinstaller/logic/CommonLogic.java
@@ -38,6 +38,7 @@ import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
+import java.util.concurrent.atomic.AtomicReference;
 
 import pxb.android.axml.AxmlReader;
 import pxb.android.axml.AxmlVisitor;
@@ -59,7 +60,7 @@ public class CommonLogic {
 
     public static InputStream getLocalAsset(Context context, String filename) throws IOException {
         File file = new File(context.getFilesDir(), filename);
-        if(file.exists()){
+        if (file.exists()) {
             return new FileInputStream(file);
         }
         return context.getAssets().open(filename);
@@ -94,8 +95,7 @@ public class CommonLogic {
             FileOutputStream outputStream = new FileOutputStream(file);
             try (OutputStreamWriter writer = new OutputStreamWriter(outputStream, StandardCharsets.UTF_8)) {
                 writer.write(new Gson().toJson(content));
-            }
-            finally {
+            } finally {
                 FileUtils.moveFile(file, new File(context.getFilesDir(), filename));
             }
         } catch (Exception ignored) {
@@ -136,8 +136,8 @@ public class CommonLogic {
 
     public static void setProgressDialogState(View view, MaterialDialog dialog, int message, int progress) {
         Activity activity = getActivityFromView(view);
-        if(activity != null && !activity.isFinishing() && !dialog.isCancelled()) {
-            activity.runOnUiThread(()->{
+        if (activity != null && !activity.isFinishing() && !dialog.isCancelled()) {
+            activity.runOnUiThread(() -> {
                 dialog.incrementProgress(progress - dialog.getCurrentProgress());
                 dialog.setContent(message);
             });
@@ -159,62 +159,80 @@ public class CommonLogic {
 
     public static void showAlertDialog(View view, int title, String message) {
         Activity activity = getActivityFromView(view);
-        if(activity != null && !activity.isFinishing()) {
-            activity.runOnUiThread(()-> new MaterialDialog.Builder(activity).title(title).content(message).positiveText(R.string.ok).show());
+        if (activity != null && !activity.isFinishing()) {
+            activity.runOnUiThread(() -> new MaterialDialog.Builder(activity).title(title).content(message).positiveText(R.string.ok).show());
         }
     }
+
     public static void showAlertDialog(View view, int title, int message) {
         Activity activity = getActivityFromView(view);
-        if(activity != null && !activity.isFinishing()) {
-            activity.runOnUiThread(()-> new MaterialDialog.Builder(activity).title(title).content(message).positiveText(R.string.ok).show());
+        if (activity != null && !activity.isFinishing()) {
+            activity.runOnUiThread(() -> new MaterialDialog.Builder(activity).title(title).content(message).positiveText(R.string.ok).show());
         }
     }
 
     public static void showConfirmDialog(View view, int title, int message, MaterialDialog.SingleButtonCallback callback) {
         Activity activity = getActivityFromView(view);
-        if(activity != null && !activity.isFinishing()) {
-            activity.runOnUiThread(()-> new MaterialDialog.Builder(activity).title(title).content(message).positiveText(R.string.confirm).negativeText(R.string.cancel).onAny(callback).show());
+        if (activity != null && !activity.isFinishing()) {
+            activity.runOnUiThread(() -> new MaterialDialog.Builder(activity).title(title).content(message).positiveText(R.string.confirm).negativeText(R.string.cancel).onAny(callback).show());
         }
     }
 
     public static void showConfirmDialog(View view, int title, String message, MaterialDialog.SingleButtonCallback callback) {
         Activity activity = getActivityFromView(view);
-        if(activity != null && !activity.isFinishing()) {
-            activity.runOnUiThread(()-> new MaterialDialog.Builder(activity).title(title).content(message).positiveText(R.string.confirm).negativeText(R.string.cancel).onAny(callback).show());
+        if (activity != null && !activity.isFinishing()) {
+            activity.runOnUiThread(() -> new MaterialDialog.Builder(activity).title(title).content(message).positiveText(R.string.confirm).negativeText(R.string.cancel).onAny(callback).show());
         }
     }
 
+    public static AtomicReference<MaterialDialog> showProgressDialog(View view, int title, String message) {
+        Activity activity = getActivityFromView(view);
+        AtomicReference<MaterialDialog> reference = new AtomicReference<>();
+        if (activity != null && !activity.isFinishing()) {
+            activity.runOnUiThread(() -> {
+                MaterialDialog dialog = new MaterialDialog.Builder(activity)
+                        .title(title)
+                        .content(message)
+                        .progress(false, 100, true)
+                        .cancelable(false)
+                        .show();
+                reference.set(dialog);
+            });
+        }
+        return reference;
+    }
+
     public static List<ApkFilesManifest> findAllApkFileManifest(Context context) {
         ApkFilesManifest apkFilesManifest = CommonLogic.getAssetJson(context, "apk_files_manifest.json", ApkFilesManifest.class);
         ArrayList<ApkFilesManifest> apkFilesManifests = Lists.newArrayList(apkFilesManifest);
         File compatFolder = new File(context.getFilesDir(), "compat");
-        if(compatFolder.exists()) {
+        if (compatFolder.exists()) {
             for (File directory : compatFolder.listFiles(File::isDirectory)) {
                 File manifestFile = new File(directory, "apk_files_manifest.json");
-                if(manifestFile.exists()) {
+                if (manifestFile.exists()) {
                     ApkFilesManifest manifest = getFileJson(manifestFile, ApkFilesManifest.class);
-                    if(manifest != null) {
+                    if (manifest != null) {
                         apkFilesManifests.add(manifest);
                     }
                 }
             }
         }
-        Collections.sort(apkFilesManifests, (a, b)-> Long.compare(b.getMinBuildCode(), a.getMinBuildCode()));
+        Collections.sort(apkFilesManifests, (a, b) -> Long.compare(b.getMinBuildCode(), a.getMinBuildCode()));
         return apkFilesManifests;
     }
 
     public static boolean unpackSmapiFiles(Context context, String apkPath, boolean checkMod) {
         List<ManifestEntry> manifestEntries = CommonLogic.getAssetJson(context, "smapi_files_manifest.json", new TypeToken<List<ManifestEntry>>() {
         }.getType());
-        if(manifestEntries == null)
+        if (manifestEntries == null)
             return false;
         File basePath = new File(Environment.getExternalStorageDirectory() + "/StardewValley/");
-        if(!basePath.exists()) {
-            if(!basePath.mkdir()) {
+        if (!basePath.exists()) {
+            if (!basePath.mkdir()) {
                 return false;
             }
         }
-        File noMedia = new File(basePath,".nomedia");
+        File noMedia = new File(basePath, ".nomedia");
         if (!noMedia.exists()) {
             try {
                 noMedia.createNewFile();
@@ -225,7 +243,7 @@ public class CommonLogic {
             File targetFile = new File(basePath, entry.getTargetPath());
             switch (entry.getOrigin()) {
                 case 0:
-                    if(!checkMod || !targetFile.exists()) {
+                    if (!checkMod || !targetFile.exists()) {
                         try (InputStream inputStream = context.getAssets().open(entry.getAssetPath())) {
                             if (!targetFile.getParentFile().exists()) {
                                 if (!targetFile.getParentFile().mkdirs()) {
@@ -241,7 +259,7 @@ public class CommonLogic {
                     }
                     break;
                 case 1:
-                    if(!checkMod || !targetFile.exists()) {
+                    if (!checkMod || !targetFile.exists()) {
                         ZipUtil.unpackEntry(new File(apkPath), entry.getAssetPath(), targetFile);
                     }
                     break;
@@ -275,7 +293,7 @@ public class CommonLogic {
     }
 
     public static String getFileHash(Context context, String filename) {
-        try(InputStream inputStream = getLocalAsset(context, filename)){
+        try (InputStream inputStream = getLocalAsset(context, filename)) {
             return Hashing.sha256().hashBytes(ByteStreams.toByteArray(inputStream)).toString();
         } catch (IOException ignored) {
         }
@@ -283,7 +301,7 @@ public class CommonLogic {
     }
 
     public static String getFileHash(File file) {
-        try(InputStream inputStream = new FileInputStream(file)){
+        try (InputStream inputStream = new FileInputStream(file)) {
             return Hashing.sha256().hashBytes(ByteStreams.toByteArray(inputStream)).toString();
         } catch (IOException ignored) {
         }
diff --git a/app/src/main/java/com/zane/smapiinstaller/ui/about/AboutFragment.java b/app/src/main/java/com/zane/smapiinstaller/ui/about/AboutFragment.java
new file mode 100644
index 0000000..062cda8
--- /dev/null
+++ b/app/src/main/java/com/zane/smapiinstaller/ui/about/AboutFragment.java
@@ -0,0 +1,65 @@
+package com.zane.smapiinstaller.ui.about;
+
+import android.os.Bundle;
+
+import androidx.fragment.app.Fragment;
+
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+
+import com.zane.smapiinstaller.R;
+
+/**
+ * A simple {@link Fragment} subclass.
+ * Use the {@link AboutFragment#newInstance} factory method to
+ * create an instance of this fragment.
+ */
+public class AboutFragment extends Fragment {
+    // TODO: Rename parameter arguments, choose names that match
+    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
+    private static final String ARG_PARAM1 = "param1";
+    private static final String ARG_PARAM2 = "param2";
+
+    // TODO: Rename and change types of parameters
+    private String mParam1;
+    private String mParam2;
+
+    public AboutFragment() {
+        // Required empty public constructor
+    }
+
+    /**
+     * Use this factory method to create a new instance of
+     * this fragment using the provided parameters.
+     *
+     * @param param1 Parameter 1.
+     * @param param2 Parameter 2.
+     * @return A new instance of fragment AboutFragment.
+     */
+    // TODO: Rename and change types and number of parameters
+    public static AboutFragment newInstance(String param1, String param2) {
+        AboutFragment fragment = new AboutFragment();
+        Bundle args = new Bundle();
+        args.putString(ARG_PARAM1, param1);
+        args.putString(ARG_PARAM2, param2);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        if (getArguments() != null) {
+            mParam1 = getArguments().getString(ARG_PARAM1);
+            mParam2 = getArguments().getString(ARG_PARAM2);
+        }
+    }
+
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container,
+                             Bundle savedInstanceState) {
+        // Inflate the layout for this fragment
+        return inflater.inflate(R.layout.fragment_about, container, false);
+    }
+}
diff --git a/app/src/main/java/com/zane/smapiinstaller/ui/download/DownloadableContentAdapter.java b/app/src/main/java/com/zane/smapiinstaller/ui/download/DownloadableContentAdapter.java
index 9315e6a..f72bf4f 100644
--- a/app/src/main/java/com/zane/smapiinstaller/ui/download/DownloadableContentAdapter.java
+++ b/app/src/main/java/com/zane/smapiinstaller/ui/download/DownloadableContentAdapter.java
@@ -17,6 +17,7 @@ import com.afollestad.materialdialogs.DialogAction;
 import com.afollestad.materialdialogs.MaterialDialog;
 import com.lzy.okgo.OkGo;
 import com.lzy.okgo.callback.FileCallback;
+import com.lzy.okgo.model.Progress;
 import com.lzy.okgo.model.Response;
 import com.zane.smapiinstaller.R;
 import com.zane.smapiinstaller.entity.DownloadableContent;
@@ -31,6 +32,8 @@ import org.zeroturnaround.zip.commons.FileUtils;
 import java.io.File;
 import java.io.IOException;
 import java.util.List;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.concurrent.atomic.AtomicReference;
 
 /**
  * {@link RecyclerView.Adapter} that can display a {@link DownloadableContent}
@@ -71,6 +74,7 @@ public class DownloadableContentAdapter extends RecyclerView.Adapter<Downloadabl
         Button buttonRemove;
         @BindView(R.id.button_download_content)
         Button buttonDownload;
+        private AtomicBoolean downloading = new AtomicBoolean(false);
 
         public DownloadableContent downloadableContent;
 
@@ -134,16 +138,40 @@ public class DownloadableContentAdapter extends RecyclerView.Adapter<Downloadabl
                     return;
                 }
             }
+            if (downloading.get())
+                return;
+            downloading.set(true);
             ModManifestEntry finalModManifestEntry = modManifestEntry;
+            AtomicReference<MaterialDialog> dialogRef = CommonLogic.showProgressDialog(itemView, R.string.progress, "");
             OkGo.<File>get(downloadableContent.getUrl()).execute(new FileCallback(file.getParentFile().getAbsolutePath(), file.getName()) {
                 @Override
                 public void onError(Response<File> response) {
                     super.onError(response);
+                    MaterialDialog dialog = dialogRef.get();
+                    if (dialog != null && !dialog.isCancelled()) {
+                        dialog.dismiss();
+                    }
+                    downloading.set(false);
                     CommonLogic.showAlertDialog(itemView, R.string.error, R.string.error_failed_to_download);
                 }
 
+                @Override
+                public void downloadProgress(Progress progress) {
+                    super.downloadProgress(progress);
+                    MaterialDialog dialog = dialogRef.get();
+                    if (dialog != null && !dialog.isCancelled()) {
+                        dialog.setContent(R.string.downloading, progress.currentSize / 1024, progress.totalSize / 1024);
+                        dialog.setProgress((int) (progress.currentSize / progress.totalSize));
+                    }
+                }
+
                 @Override
                 public void onSuccess(Response<File> response) {
+                    MaterialDialog dialog = dialogRef.get();
+                    if (dialog != null && !dialog.isCancelled()) {
+                        dialog.dismiss();
+                    }
+                    downloading.set(false);
                     File downloadedFile = response.body();
                     String hash = CommonLogic.getFileHash(downloadedFile);
                     if (!StringUtils.equalsIgnoreCase(hash, downloadableContent.getHash())) {
diff --git a/app/src/main/res/layout/fragment_about.xml b/app/src/main/res/layout/fragment_about.xml
new file mode 100644
index 0000000..d6d36c4
--- /dev/null
+++ b/app/src/main/res/layout/fragment_about.xml
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:divider="@drawable/horizontal_divider"
+    android:showDividers="middle"
+    tools:context=".ui.about.AboutFragment">
+
+    <TextView
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="@string/test_message" />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/app/src/main/res/menu/activity_main_drawer.xml b/app/src/main/res/menu/activity_main_drawer.xml
index 02732da..cc66cf2 100644
--- a/app/src/main/res/menu/activity_main_drawer.xml
+++ b/app/src/main/res/menu/activity_main_drawer.xml
@@ -20,5 +20,9 @@
             android:id="@+id/nav_help"
             android:icon="@android:drawable/ic_menu_help"
             android:title="@string/menu_help" />
+        <item
+            android:id="@+id/nav_about"
+            android:icon="@android:drawable/ic_dialog_info"
+            android:title="@string/menu_about" />
     </group>
 </menu>
diff --git a/app/src/main/res/navigation/mobile_navigation.xml b/app/src/main/res/navigation/mobile_navigation.xml
index 929d919..3367a8a 100644
--- a/app/src/main/res/navigation/mobile_navigation.xml
+++ b/app/src/main/res/navigation/mobile_navigation.xml
@@ -44,4 +44,9 @@
         android:name="com.zane.smapiinstaller.ui.download.DownloadableContentFragment"
         android:label="@string/menu_download"
         tools:layout="@layout/fragment_download_content_list" />
+    <fragment
+        android:id="@+id/nav_about"
+        android:name="com.zane.smapiinstaller.ui.about.AboutFragment"
+        android:label="@string/menu_about"
+        tools:layout="@layout/fragment_about" />
 </navigation>
\ No newline at end of file
diff --git a/app/src/main/res/values-zh-rHK/strings.xml b/app/src/main/res/values-zh-rHK/strings.xml
index 047dd29..e3a8cba 100644
--- a/app/src/main/res/values-zh-rHK/strings.xml
+++ b/app/src/main/res/values-zh-rHK/strings.xml
@@ -49,4 +49,7 @@
     <string name="locale_pack">語言包</string>
     <string name="info">提示</string>
     <string name="download_unpack_success">已完成下載安裝</string>
+    <string name="progress">進度</string>
+    <string name="downloading">正在下載: %d KB / %d KB</string>
+    <string name="menu_about">關於</string>
 </resources>
diff --git a/app/src/main/res/values-zh-rTW/strings.xml b/app/src/main/res/values-zh-rTW/strings.xml
index 047dd29..e3a8cba 100644
--- a/app/src/main/res/values-zh-rTW/strings.xml
+++ b/app/src/main/res/values-zh-rTW/strings.xml
@@ -49,4 +49,7 @@
     <string name="locale_pack">語言包</string>
     <string name="info">提示</string>
     <string name="download_unpack_success">已完成下載安裝</string>
+    <string name="progress">進度</string>
+    <string name="downloading">正在下載: %d KB / %d KB</string>
+    <string name="menu_about">關於</string>
 </resources>
diff --git a/app/src/main/res/values-zh/strings.xml b/app/src/main/res/values-zh/strings.xml
index 58bdf87..d7c4f1b 100644
--- a/app/src/main/res/values-zh/strings.xml
+++ b/app/src/main/res/values-zh/strings.xml
@@ -49,4 +49,7 @@
     <string name="locale_pack">语言包</string>
     <string name="info">提示</string>
     <string name="download_unpack_success">已完成下载安装</string>
+    <string name="progress">进度</string>
+    <string name="downloading">正在下载: %d KB / %d KB</string>
+    <string name="menu_about">关于</string>
 </resources>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index 6ef61fe..c88359a 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -37,7 +37,7 @@
     <string name="button_compat">Compat</string>
     <string name="button_nexus">Nexus</string>
     <string name="button_release">Release</string>
-    <string name="test_message">Still at test stage now, not release yet.</string>
+    <string name="test_message">Still at test stage now.</string>
     <string name="button_logs">Logs</string>
     <string name="smapi_game_name">SMAPI Stardew Valley</string>
     <string name="error_failed_to_create_file">Failed to create target file : %s</string>
@@ -49,4 +49,10 @@
     <string name="locale_pack">Locale Pack</string>
     <string name="info">Info</string>
     <string name="download_unpack_success">Download and unpack success</string>
+    <string name="progress">Progress</string>
+    <string name="downloading">Downloading: %d KB / %d KB</string>
+
+    <!-- TODO: Remove or change this placeholder text -->
+    <string name="hello_blank_fragment">Hello blank fragment</string>
+    <string name="menu_about">About</string>
 </resources>