diff --git a/app/build.gradle b/app/build.gradle
index 4b25e81b..db753c3c 100644
--- a/app/build.gradle
+++ b/app/build.gradle
@@ -20,7 +20,7 @@ android {
         minSdkVersion 16
         targetSdkVersion 29
         versionCode 32
-        versionName "4.3"
+        versionName "4.3-beta1"
         testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
         multiDexEnabled true
         vectorDrawables.useSupportLibrary = true
diff --git a/app/src/main/java/xyz/quaver/pupil/util/update.kt b/app/src/main/java/xyz/quaver/pupil/util/update.kt
index c133ab94..e0c7d43c 100644
--- a/app/src/main/java/xyz/quaver/pupil/util/update.kt
+++ b/app/src/main/java/xyz/quaver/pupil/util/update.kt
@@ -151,12 +151,25 @@ fun checkUpdate(context: AppCompatActivity, force: Boolean = false) {
                     priority = NotificationCompat.PRIORITY_LOW
                 }
 
-                CoroutineScope(Dispatchers.IO).launch {
+                CoroutineScope(Dispatchers.IO).launch io@{
                     val target = File(getDownloadDirectory(context), "Pupil.apk")
 
-                    URL(url).download(target) { progress, fileSize ->
-                        builder.setProgress(fileSize.toInt(), progress.toInt(), false)
+                    try {
+                        URL(url).download(target) { progress, fileSize ->
+                            builder.setProgress(fileSize.toInt(), progress.toInt(), false)
+                            notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
+                        }
+                    } catch (e: Exception) {
+                        builder.apply {
+                            setContentText(context.getString(R.string.update_failed))
+                            setMessage(context.getString(R.string.update_failed_message))
+                            setSmallIcon(android.R.drawable.stat_sys_download_done)
+                        }
+
+                        notificationManager.cancel(UPDATE_NOTIFICATION_ID)
                         notificationManager.notify(UPDATE_NOTIFICATION_ID, builder.build())
+
+                        return@io
                     }
 
                     val install = Intent(Intent.ACTION_VIEW).apply {
diff --git a/app/src/main/res/values-ja/strings.xml b/app/src/main/res/values-ja/strings.xml
index 74bf6715..37dc05d8 100644
--- a/app/src/main/res/values-ja/strings.xml
+++ b/app/src/main/res/values-ja/strings.xml
@@ -84,7 +84,7 @@
     <string name="main_menu_sort_newest">投稿日時順</string>
     <string name="main_menu_sort_popular">人気順</string>
     <string name="update_failed">アップデートに失敗しました</string>
-    <string name="update_failed_message">マニュアルインストールが必要です。APKファイルは</string>
+    <string name="update_failed_message">アップデート中エラーが発生しました</string>
     <string name="ignore_update">無視</string>
     <string name="lock_corrupted">ロックファイルが破損されています。Pupilを再再インストールしてください。</string>
     <string name="update_no_permission">権限がないため自動アップデートを行えません。ホームページで直接ダウンロードしてください。</string>
diff --git a/app/src/main/res/values-ko/strings.xml b/app/src/main/res/values-ko/strings.xml
index bbaa7d97..f574795f 100644
--- a/app/src/main/res/values-ko/strings.xml
+++ b/app/src/main/res/values-ko/strings.xml
@@ -83,8 +83,8 @@
     <string name="main_menu_sort">정렬</string>
     <string name="main_menu_sort_popular">인기순</string>
     <string name="main_menu_sort_newest">시간순</string>
-    <string name="update_failed">"업데이트 "</string>
-    <string name="update_failed_message">수동 업데이트가 필요합니다. APK 파일은 다운로드 폴더에 있습니다.</string>
+    <string name="update_failed">"업데이트 에러</string>
+    <string name="update_failed_message">업데이트 중 에러가 발생했습니다</string>
     <string name="ignore_update">무시</string>
     <string name="lock_corrupted">잠금 파일이 손상되었습니다! 앱을 재설치 해 주시기 바랍니다.</string>
     <string name="update_no_permission">권한이 부여되어 있지 않아 자동 업데이트를 진행할 수 없습니다. 홈페이지에서 직접 다운로드 받으시기 바랍니다.</string>
diff --git a/app/src/main/res/values/strings.xml b/app/src/main/res/values/strings.xml
index d2852e5b..df9688b9 100644
--- a/app/src/main/res/values/strings.xml
+++ b/app/src/main/res/values/strings.xml
@@ -28,7 +28,7 @@
     <string name="https_block_alert">(Korean only)</string>
 
     <string name="update_failed">Update failed</string>
-    <string name="update_failed_message">Please install manually. APK file is in the Downloads folder.</string>
+    <string name="update_failed_message">Please install manually by visiting github release page :{ (or try again!)</string>
     <string name="update_no_permission">Cannot auto update because permission is denied. Please download manually from the webpage.</string>
     <string name="ignore_update">Ignore</string>
 
diff --git a/libpupil/src/main/java/xyz/quaver/hitomi/reader.kt b/libpupil/src/main/java/xyz/quaver/hitomi/reader.kt
index 4ed503a9..e3cfb193 100644
--- a/libpupil/src/main/java/xyz/quaver/hitomi/reader.kt
+++ b/libpupil/src/main/java/xyz/quaver/hitomi/reader.kt
@@ -20,7 +20,6 @@ import kotlinx.serialization.Serializable
 import org.jsoup.Jsoup
 
 fun getReferer(galleryID: Int) = "https://hitomi.la/reader/$galleryID.html"
-fun webpUrlFromUrl(url: String) = url.replace("/galleries/", "/webp/") + ".webp"
 
 @Serializable
 data class GalleryInfo(