diff --git a/app/schemas/com.hippo.ehviewer.dao.EhDatabase/6.json b/app/schemas/com.hippo.ehviewer.dao.EhDatabase/6.json
new file mode 100644
index 000000000..824a35b01
--- /dev/null
+++ b/app/schemas/com.hippo.ehviewer.dao.EhDatabase/6.json
@@ -0,0 +1,534 @@
+{
+  "formatVersion": 1,
+  "database": {
+    "version": 6,
+    "identityHash": "e45f4380ef769c127604cb2a502a942b",
+    "entities": [
+      {
+        "tableName": "BOOKMARKS",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`PAGE` INTEGER NOT NULL, `TIME` INTEGER NOT NULL, `GID` INTEGER NOT NULL, `TOKEN` TEXT, `TITLE` TEXT, `TITLE_JPN` TEXT, `THUMB` TEXT, `CATEGORY` INTEGER NOT NULL, `POSTED` TEXT, `UPLOADER` TEXT, `RATING` REAL NOT NULL, `SIMPLE_LANGUAGE` TEXT, PRIMARY KEY(`GID`))",
+        "fields": [
+          {
+            "fieldPath": "page",
+            "columnName": "PAGE",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "time",
+            "columnName": "TIME",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "gid",
+            "columnName": "GID",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "token",
+            "columnName": "TOKEN",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "title",
+            "columnName": "TITLE",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "titleJpn",
+            "columnName": "TITLE_JPN",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "thumbKey",
+            "columnName": "THUMB",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "category",
+            "columnName": "CATEGORY",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "posted",
+            "columnName": "POSTED",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "uploader",
+            "columnName": "UPLOADER",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "rating",
+            "columnName": "RATING",
+            "affinity": "REAL",
+            "notNull": true
+          },
+          {
+            "fieldPath": "simpleLanguage",
+            "columnName": "SIMPLE_LANGUAGE",
+            "affinity": "TEXT",
+            "notNull": false
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "GID"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      },
+      {
+        "tableName": "DOWNLOADS",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`STATE` INTEGER NOT NULL, `LEGACY` INTEGER NOT NULL, `TIME` INTEGER NOT NULL, `LABEL` TEXT, `GID` INTEGER NOT NULL, `TOKEN` TEXT, `TITLE` TEXT, `TITLE_JPN` TEXT, `THUMB` TEXT, `CATEGORY` INTEGER NOT NULL, `POSTED` TEXT, `UPLOADER` TEXT, `RATING` REAL NOT NULL, `SIMPLE_LANGUAGE` TEXT, PRIMARY KEY(`GID`))",
+        "fields": [
+          {
+            "fieldPath": "state",
+            "columnName": "STATE",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "legacy",
+            "columnName": "LEGACY",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "time",
+            "columnName": "TIME",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "label",
+            "columnName": "LABEL",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "gid",
+            "columnName": "GID",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "token",
+            "columnName": "TOKEN",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "title",
+            "columnName": "TITLE",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "titleJpn",
+            "columnName": "TITLE_JPN",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "thumbKey",
+            "columnName": "THUMB",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "category",
+            "columnName": "CATEGORY",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "posted",
+            "columnName": "POSTED",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "uploader",
+            "columnName": "UPLOADER",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "rating",
+            "columnName": "RATING",
+            "affinity": "REAL",
+            "notNull": true
+          },
+          {
+            "fieldPath": "simpleLanguage",
+            "columnName": "SIMPLE_LANGUAGE",
+            "affinity": "TEXT",
+            "notNull": false
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "GID"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      },
+      {
+        "tableName": "DOWNLOAD_LABELS",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`_id` INTEGER, `LABEL` TEXT, `TIME` INTEGER NOT NULL, PRIMARY KEY(`_id`))",
+        "fields": [
+          {
+            "fieldPath": "id",
+            "columnName": "_id",
+            "affinity": "INTEGER",
+            "notNull": false
+          },
+          {
+            "fieldPath": "label",
+            "columnName": "LABEL",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "time",
+            "columnName": "TIME",
+            "affinity": "INTEGER",
+            "notNull": true
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "_id"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      },
+      {
+        "tableName": "DOWNLOAD_DIRNAME",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`GID` INTEGER NOT NULL, `DIRNAME` TEXT NOT NULL, PRIMARY KEY(`GID`))",
+        "fields": [
+          {
+            "fieldPath": "gid",
+            "columnName": "GID",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "dirname",
+            "columnName": "DIRNAME",
+            "affinity": "TEXT",
+            "notNull": true
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "GID"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      },
+      {
+        "tableName": "FILTER",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`MODE` INTEGER NOT NULL, `TEXT` TEXT, `ENABLE` INTEGER, `_id` INTEGER, PRIMARY KEY(`_id`))",
+        "fields": [
+          {
+            "fieldPath": "mode",
+            "columnName": "MODE",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "text",
+            "columnName": "TEXT",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "enable",
+            "columnName": "ENABLE",
+            "affinity": "INTEGER",
+            "notNull": false
+          },
+          {
+            "fieldPath": "id",
+            "columnName": "_id",
+            "affinity": "INTEGER",
+            "notNull": false
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "_id"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      },
+      {
+        "tableName": "HISTORY",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`TIME` INTEGER NOT NULL, `MODE` INTEGER NOT NULL, `GID` INTEGER NOT NULL, `TOKEN` TEXT, `TITLE` TEXT, `TITLE_JPN` TEXT, `THUMB` TEXT, `CATEGORY` INTEGER NOT NULL, `POSTED` TEXT, `UPLOADER` TEXT, `RATING` REAL NOT NULL, `SIMPLE_LANGUAGE` TEXT, PRIMARY KEY(`GID`))",
+        "fields": [
+          {
+            "fieldPath": "time",
+            "columnName": "TIME",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "favoriteSlotBackingField",
+            "columnName": "MODE",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "gid",
+            "columnName": "GID",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "token",
+            "columnName": "TOKEN",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "title",
+            "columnName": "TITLE",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "titleJpn",
+            "columnName": "TITLE_JPN",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "thumbKey",
+            "columnName": "THUMB",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "category",
+            "columnName": "CATEGORY",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "posted",
+            "columnName": "POSTED",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "uploader",
+            "columnName": "UPLOADER",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "rating",
+            "columnName": "RATING",
+            "affinity": "REAL",
+            "notNull": true
+          },
+          {
+            "fieldPath": "simpleLanguage",
+            "columnName": "SIMPLE_LANGUAGE",
+            "affinity": "TEXT",
+            "notNull": false
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "GID"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      },
+      {
+        "tableName": "LOCAL_FAVORITES",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`TIME` INTEGER NOT NULL, `GID` INTEGER NOT NULL, `TOKEN` TEXT, `TITLE` TEXT, `TITLE_JPN` TEXT, `THUMB` TEXT, `CATEGORY` INTEGER NOT NULL, `POSTED` TEXT, `UPLOADER` TEXT, `RATING` REAL NOT NULL, `SIMPLE_LANGUAGE` TEXT, PRIMARY KEY(`GID`))",
+        "fields": [
+          {
+            "fieldPath": "time",
+            "columnName": "TIME",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "gid",
+            "columnName": "GID",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "token",
+            "columnName": "TOKEN",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "title",
+            "columnName": "TITLE",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "titleJpn",
+            "columnName": "TITLE_JPN",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "thumbKey",
+            "columnName": "THUMB",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "category",
+            "columnName": "CATEGORY",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "posted",
+            "columnName": "POSTED",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "uploader",
+            "columnName": "UPLOADER",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "rating",
+            "columnName": "RATING",
+            "affinity": "REAL",
+            "notNull": true
+          },
+          {
+            "fieldPath": "simpleLanguage",
+            "columnName": "SIMPLE_LANGUAGE",
+            "affinity": "TEXT",
+            "notNull": false
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "GID"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      },
+      {
+        "tableName": "QUICK_SEARCH",
+        "createSql": "CREATE TABLE IF NOT EXISTS `${TABLE_NAME}` (`_id` INTEGER, `NAME` TEXT, `MODE` INTEGER NOT NULL, `CATEGORY` INTEGER NOT NULL, `KEYWORD` TEXT, `ADVANCE_SEARCH` INTEGER NOT NULL, `MIN_RATING` INTEGER NOT NULL, `PAGE_FROM` INTEGER NOT NULL, `PAGE_TO` INTEGER NOT NULL, `TIME` INTEGER NOT NULL, PRIMARY KEY(`_id`))",
+        "fields": [
+          {
+            "fieldPath": "id",
+            "columnName": "_id",
+            "affinity": "INTEGER",
+            "notNull": false
+          },
+          {
+            "fieldPath": "name",
+            "columnName": "NAME",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "mode",
+            "columnName": "MODE",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "category",
+            "columnName": "CATEGORY",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "keyword",
+            "columnName": "KEYWORD",
+            "affinity": "TEXT",
+            "notNull": false
+          },
+          {
+            "fieldPath": "advanceSearch",
+            "columnName": "ADVANCE_SEARCH",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "minRating",
+            "columnName": "MIN_RATING",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "pageFrom",
+            "columnName": "PAGE_FROM",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "pageTo",
+            "columnName": "PAGE_TO",
+            "affinity": "INTEGER",
+            "notNull": true
+          },
+          {
+            "fieldPath": "time",
+            "columnName": "TIME",
+            "affinity": "INTEGER",
+            "notNull": true
+          }
+        ],
+        "primaryKey": {
+          "autoGenerate": false,
+          "columnNames": [
+            "_id"
+          ]
+        },
+        "indices": [],
+        "foreignKeys": []
+      }
+    ],
+    "views": [],
+    "setupQueries": [
+      "CREATE TABLE IF NOT EXISTS room_master_table (id INTEGER PRIMARY KEY,identity_hash TEXT)",
+      "INSERT OR REPLACE INTO room_master_table (id,identity_hash) VALUES(42, 'e45f4380ef769c127604cb2a502a942b')"
+    ]
+  }
+}
\ No newline at end of file
diff --git a/app/src/main/java/com/hippo/ehviewer/EhDB.kt b/app/src/main/java/com/hippo/ehviewer/EhDB.kt
index b3bf7f13f..9510fb5bc 100644
--- a/app/src/main/java/com/hippo/ehviewer/EhDB.kt
+++ b/app/src/main/java/com/hippo/ehviewer/EhDB.kt
@@ -79,12 +79,11 @@ object EhDB {
     }
 
     @Synchronized
-    fun putDownloadDirname(gid: Long, dirname: String?) {
+    fun putDownloadDirname(gid: Long, dirname: String) {
         val dao = db.downloadDirnameDao()
         var raw = dao.load(gid)
         if (raw != null) {
-            raw.dirname = dirname
-            dao.update(raw)
+            dao.update(raw.copy(dirname = dirname))
         } else {
             raw = DownloadDirname(gid, dirname)
             dao.insert(raw)
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/DownloadDirname.kt b/app/src/main/java/com/hippo/ehviewer/dao/DownloadDirname.kt
index c2e5814b6..4e2f8a789 100644
--- a/app/src/main/java/com/hippo/ehviewer/dao/DownloadDirname.kt
+++ b/app/src/main/java/com/hippo/ehviewer/dao/DownloadDirname.kt
@@ -8,8 +8,8 @@ import androidx.room.PrimaryKey
 data class DownloadDirname(
     @PrimaryKey
     @ColumnInfo(name = "GID")
-    var gid: Long = 0,
+    val gid: Long,
 
     @ColumnInfo(name = "DIRNAME")
-    var dirname: String? = null,
+    val dirname: String,
 )
diff --git a/app/src/main/java/com/hippo/ehviewer/dao/EhDatabase.kt b/app/src/main/java/com/hippo/ehviewer/dao/EhDatabase.kt
index 2f71f06b3..882661043 100644
--- a/app/src/main/java/com/hippo/ehviewer/dao/EhDatabase.kt
+++ b/app/src/main/java/com/hippo/ehviewer/dao/EhDatabase.kt
@@ -30,8 +30,14 @@ val EHDB_MIGRATION_4_5 = object : Migration(4, 5) {
 
 @Database(
     entities = [BookmarkInfo::class, DownloadInfo::class, DownloadLabel::class, DownloadDirname::class, Filter::class, HistoryInfo::class, LocalFavoriteInfo::class, QuickSearch::class],
-    version = 5,
+    version = 6,
     exportSchema = true,
+    autoMigrations = [
+        AutoMigration(
+            from = 5,
+            to = 6,
+        ),
+    ],
 )
 abstract class EhDatabase : RoomDatabase() {
     abstract fun bookmarksBao(): BookmarksDao
diff --git a/app/src/main/java/com/hippo/ehviewer/preference/RestoreDownloadPreference.kt b/app/src/main/java/com/hippo/ehviewer/preference/RestoreDownloadPreference.kt
index d4ea50266..4e57c678d 100644
--- a/app/src/main/java/com/hippo/ehviewer/preference/RestoreDownloadPreference.kt
+++ b/app/src/main/java/com/hippo/ehviewer/preference/RestoreDownloadPreference.kt
@@ -53,7 +53,7 @@ class RestoreDownloadPreference @JvmOverloads constructor(
         return runCatching {
             val spiderInfo = readCompatFromUniFile(siFile) ?: return null
             val gid = spiderInfo.gid
-            val dirname = file.name
+            val dirname = file.name ?: return null
             if (mManager.containDownloadInfo(gid)) {
                 // Restore download dir to avoid redownload
                 val dbdirname = EhDB.getDownloadDirname(gid)
@@ -63,10 +63,9 @@ class RestoreDownloadPreference @JvmOverloads constructor(
                 }
                 return null
             }
-            RestoreItem().also {
+            RestoreItem(dirname).also {
                 it.gid = spiderInfo.gid
                 it.token = spiderInfo.token
-                it.dirname = file.name
             }
         }.onFailure {
             it.printStackTrace()
@@ -85,9 +84,9 @@ class RestoreDownloadPreference @JvmOverloads constructor(
         }
     }
 
-    private class RestoreItem : BaseGalleryInfo() {
-        var dirname: String? = null
-    }
+    private class RestoreItem(
+        val dirname: String,
+    ) : BaseGalleryInfo()
 
     override fun launchJob() {
         if (singletonJob?.isActive == true) {