diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 64f45e93a..ab4a11879 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -71,6 +71,15 @@ jobs:
           echo "${{ steps.tag.outputs.tag }}" > dist/assets/version
           zip -r "AstrBot-${{ steps.tag.outputs.tag }}-dashboard.zip" dist
 
+      - name: Build core package
+        shell: bash
+        run: |
+          git archive \
+            --format=zip \
+            --prefix="AstrBot-${{ steps.tag.outputs.tag }}/" \
+            --output="AstrBot-${{ steps.tag.outputs.tag }}-core.zip" \
+            HEAD
+
       - name: Upload dashboard artifact
         uses: actions/upload-artifact@v7
         with:
@@ -78,11 +87,12 @@ jobs:
           if-no-files-found: error
           path: dashboard/AstrBot-${{ steps.tag.outputs.tag }}-dashboard.zip
 
-      - name: Upload dashboard package to Cloudflare R2
+      - name: Upload release packages to Cloudflare R2
         if: ${{ env.R2_ACCOUNT_ID != '' && env.R2_ACCESS_KEY_ID != '' && env.R2_SECRET_ACCESS_KEY != '' }}
         env:
           R2_BUCKET_NAME: "astrbot"
-          R2_OBJECT_NAME: "astrbot-webui-latest.zip"
+          DASHBOARD_LATEST_OBJECT_NAME: "astrbot-webui-latest.zip"
+          CORE_LATEST_OBJECT_NAME: "astrbot-core-latest.zip"
           VERSION_TAG: ${{ steps.tag.outputs.tag }}
         shell: bash
         run: |
@@ -98,11 +108,18 @@ jobs:
           endpoint = https://${R2_ACCOUNT_ID}.r2.cloudflarestorage.com
           EOF
 
-          cp "dashboard/AstrBot-${VERSION_TAG}-dashboard.zip" "dashboard/${R2_OBJECT_NAME}"
-          rclone copy "dashboard/${R2_OBJECT_NAME}" "r2:${R2_BUCKET_NAME}" --progress
+          cp "dashboard/AstrBot-${VERSION_TAG}-dashboard.zip" "dashboard/${DASHBOARD_LATEST_OBJECT_NAME}"
+          rclone copy "dashboard/${DASHBOARD_LATEST_OBJECT_NAME}" "r2:${R2_BUCKET_NAME}" --progress
           cp "dashboard/AstrBot-${VERSION_TAG}-dashboard.zip" "dashboard/astrbot-webui-${VERSION_TAG}.zip"
           rclone copy "dashboard/astrbot-webui-${VERSION_TAG}.zip" "r2:${R2_BUCKET_NAME}" --progress
 
+          cp "AstrBot-${VERSION_TAG}-core.zip" "${CORE_LATEST_OBJECT_NAME}"
+          rclone copy "${CORE_LATEST_OBJECT_NAME}" "r2:${R2_BUCKET_NAME}" --progress
+          cp "AstrBot-${VERSION_TAG}-core.zip" "astrbot-core-${VERSION_TAG}.zip"
+          rclone copy "astrbot-core-${VERSION_TAG}.zip" "r2:${R2_BUCKET_NAME}" --progress
+          rclone copyto "AstrBot-${VERSION_TAG}-core.zip" "r2:${R2_BUCKET_NAME}/astrbot-core/${VERSION_TAG}/source.zip" --progress
+          rclone copyto "AstrBot-${VERSION_TAG}-core.zip" "r2:${R2_BUCKET_NAME}/download/astrbot-core/${VERSION_TAG}/source.zip" --progress
+
   publish-release:
     name: Publish GitHub Release
     if: github.repository == 'AstrBotDevs/AstrBot'
diff --git a/astrbot/core/config/default.py b/astrbot/core/config/default.py
index b60c7f230..4ba84a609 100644
--- a/astrbot/core/config/default.py
+++ b/astrbot/core/config/default.py
@@ -5,7 +5,7 @@ import os
 from astrbot.core.computer.booters.cua_defaults import CUA_DEFAULT_CONFIG
 from astrbot.core.utils.astrbot_path import get_astrbot_data_path
 
-VERSION = "4.25.5"
+VERSION = "4.25.6-rc.1"
 DB_PATH = os.path.join(get_astrbot_data_path(), "data_v4.db")
 PERSONAL_WECHAT_CONFIG_METADATA = {
     "weixin_oc_base_url": {
diff --git a/astrbot/core/updator.py b/astrbot/core/updator.py
index fab293418..3a60839f3 100644
--- a/astrbot/core/updator.py
+++ b/astrbot/core/updator.py
@@ -1,12 +1,15 @@
 import os
 import sys
 import time
+import zipfile
+from pathlib import Path
 
 import psutil
 
 from astrbot.core import logger
 from astrbot.core.config.default import VERSION
 from astrbot.core.utils.astrbot_path import get_astrbot_path
+from astrbot.core.utils.io import ensure_dir
 
 from .zip_updator import ReleaseInfo, RepoZipUpdator
 
@@ -21,6 +24,30 @@ class AstrBotUpdator(RepoZipUpdator):
         super().__init__(repo_mirror, verify=verify)
         self.MAIN_PATH = get_astrbot_path()
         self.ASTRBOT_RELEASE_API = "https://api.soulter.top/releases"
+        self.CORE_PACKAGE_BASE_URL = (
+            "https://astrbot-registry.soulter.top/download/astrbot-core"
+        )
+
+    def _build_core_package_url(self, version: str | None) -> str | None:
+        """Build the hosted core package URL for a release tag.
+
+        Args:
+            version: Release tag, such as ``v4.26.6``.
+
+        Returns:
+            Public package URL, or None when hosted package download is disabled.
+        """
+
+        if not version or not str(version).startswith("v"):
+            return None
+
+        base_url = os.environ.get(
+            "ASTRBOT_CORE_PACKAGE_BASE_URL",
+            self.CORE_PACKAGE_BASE_URL,
+        ).strip()
+        if not base_url:
+            return None
+        return f"{base_url.rstrip('/')}/{version}/source.zip"
 
     def terminate_child_processes(self) -> None:
         """终止当前进程的所有子进程
@@ -151,6 +178,41 @@ class AstrBotUpdator(RepoZipUpdator):
         proxy="",
         progress_callback=None,
     ) -> None:
+        zip_path = await self.download_update_package(
+            latest=latest,
+            version=version,
+            proxy=proxy,
+            progress_callback=progress_callback,
+        )
+        self.apply_update_package(zip_path)
+
+        if reboot:
+            self._reboot()
+
+    async def download_update_package(
+        self,
+        latest=True,
+        version=None,
+        proxy="",
+        path: str | Path = "temp.zip",
+        progress_callback=None,
+    ) -> Path:
+        """Download an AstrBot core update package without applying it.
+
+        Args:
+            latest: Whether to download the latest release.
+            version: Specific release tag or commit hash to download.
+            proxy: Optional GitHub proxy prefix.
+            path: Destination zip path.
+            progress_callback: Optional callback for download progress payloads.
+
+        Returns:
+            Path to the downloaded update package.
+
+        Raises:
+            Exception: If update metadata cannot resolve a package URL.
+        """
+
         update_data = await self.fetch_release_info(self.ASTRBOT_RELEASE_API, latest)
         file_url = None
 
@@ -159,15 +221,18 @@ class AstrBotUpdator(RepoZipUpdator):
                 "Error: You are running AstrBot via CLI, please use `pip` or `uv tool upgrade` to update AstrBot."
             )  # 避免版本管理混乱
 
+        target_version = None
         if latest:
             latest_version = update_data[0]["tag_name"]
             if self.compare_version(VERSION, latest_version) >= 0:
                 raise Exception("当前已经是最新版本。")
+            target_version = latest_version
             file_url = update_data[0]["zipball_url"]
         elif str(version).startswith("v"):
             # 更新到指定版本
             for data in update_data:
                 if data["tag_name"] == version:
+                    target_version = data["tag_name"]
                     file_url = data["zipball_url"]
             if not file_url:
                 raise Exception(f"未找到版本号为 {version} 的更新文件。")
@@ -181,16 +246,49 @@ class AstrBotUpdator(RepoZipUpdator):
             proxy = proxy.removesuffix("/")
             file_url = f"{proxy}/{file_url}"
 
-        try:
-            await self._download_file(
-                file_url,
-                "temp.zip",
-                progress_callback=progress_callback,
-            )
-            logger.info("下载 AstrBot Core 更新文件完成，正在执行解压...")
-            self.unzip_file("temp.zip", self.MAIN_PATH)
-        except BaseException as e:
-            raise e
+        zip_path = Path(path)
+        ensure_dir(zip_path.parent)
+        hosted_package_url = self._build_core_package_url(target_version)
+        if hosted_package_url:
+            try:
+                logger.info(
+                    f"优先从托管存储下载 AstrBot Core 更新包: {hosted_package_url}"
+                )
+                await self._download_file(
+                    hosted_package_url,
+                    str(zip_path),
+                    progress_callback=progress_callback,
+                )
+                if not zipfile.is_zipfile(zip_path):
+                    raise RuntimeError(
+                        "Downloaded hosted package is not a valid ZIP file"
+                    )
+                return zip_path
+            except Exception as exc:
+                logger.warning(
+                    f"从托管存储下载 AstrBot Core 更新包失败: {exc}，"
+                    "将回退到当前更新源。"
+                )
 
-        if reboot:
-            self._reboot()
+        await self._download_file(
+            file_url,
+            str(zip_path),
+            progress_callback=progress_callback,
+        )
+        return zip_path
+
+    def apply_update_package(self, zip_path: str | Path) -> None:
+        """Apply a previously downloaded AstrBot core update package.
+
+        Args:
+            zip_path: Core update zip archive path.
+
+        Returns:
+            None.
+
+        Raises:
+            Exception: If the archive cannot be extracted or applied.
+        """
+
+        logger.info("下载 AstrBot Core 更新文件完成，正在执行解压...")
+        self.unzip_file(str(zip_path), self.MAIN_PATH)
diff --git a/astrbot/core/utils/io.py b/astrbot/core/utils/io.py
index 08c9669d1..9d05fcf2f 100644
--- a/astrbot/core/utils/io.py
+++ b/astrbot/core/utils/io.py
@@ -398,12 +398,27 @@ async def download_dashboard(
     version: str | None = None,
     proxy: str | None = None,
     progress_callback=None,
+    extract: bool = True,
 ) -> None:
-    """下载管理面板文件"""
+    """Download dashboard assets and optionally extract them.
+
+    Args:
+        path: Destination zip path. Defaults to the AstrBot data directory.
+        extract_path: Directory where assets should be extracted.
+        latest: Whether to download the latest dashboard build.
+        version: Specific release tag or commit hash to download.
+        proxy: Optional download proxy prefix.
+        progress_callback: Optional callback for download progress payloads.
+        extract: Whether to extract the archive after download.
+
+    Returns:
+        None.
+    """
     if path is None:
         zip_path = Path(get_astrbot_data_path()).absolute() / "dashboard.zip"
     else:
         zip_path = Path(path).absolute()
+    ensure_dir(zip_path.parent)
 
     if latest or len(str(version)) != 40:
         ver_name = "latest" if latest else version
@@ -456,5 +471,28 @@ async def download_dashboard(
             show_progress=True,
             progress_callback=progress_callback,
         )
+    if extract:
+        extract_dashboard(zip_path, extract_path)
+
+
+def extract_dashboard(zip_path: str | Path, extract_path: str | Path = "data") -> None:
+    """Extract a downloaded dashboard archive.
+
+    Args:
+        zip_path: Dashboard zip archive path.
+        extract_path: Directory where the archive contents should be extracted.
+
+    Returns:
+        None.
+    """
+
+    extract_root = Path(extract_path).resolve()
+    ensure_dir(extract_root)
     with zipfile.ZipFile(zip_path, "r") as z:
-        z.extractall(extract_path)
+        for member in z.infolist():
+            target_path = (extract_root / member.filename).resolve()
+            if not target_path.is_relative_to(extract_root):
+                raise ValueError(
+                    f"Unsafe dashboard archive path: {member.filename}",
+                )
+            z.extract(member, extract_root)
diff --git a/astrbot/dashboard/routes/update.py b/astrbot/dashboard/routes/update.py
index 210eb2100..916df9881 100644
--- a/astrbot/dashboard/routes/update.py
+++ b/astrbot/dashboard/routes/update.py
@@ -1,5 +1,8 @@
+import asyncio
 import traceback
 import uuid
+import zipfile
+from pathlib import Path
 
 from quart import request
 
@@ -8,7 +11,15 @@ from astrbot.core.config.default import VERSION
 from astrbot.core.core_lifecycle import AstrBotCoreLifecycle
 from astrbot.core.db.migration.helper import check_migration_needed_v4, do_migration_v4
 from astrbot.core.updator import AstrBotUpdator
-from astrbot.core.utils.io import download_dashboard, get_dashboard_version
+from astrbot.core.utils.astrbot_path import (
+    get_astrbot_data_path,
+    get_astrbot_system_tmp_path,
+)
+from astrbot.core.utils.io import (
+    download_dashboard,
+    extract_dashboard,
+    get_dashboard_version,
+)
 
 from .route import Response, Route, RouteContext
 
@@ -35,6 +46,7 @@ class UpdateRoute(Route):
         self.astrbot_updator = astrbot_updator
         self.core_lifecycle = core_lifecycle
         self.update_progress: dict[str, dict] = {}
+        self._update_tasks: dict[str, asyncio.Task] = {}
         self.register_routes()
 
     def _init_update_progress(self, progress_id: str, version: str) -> None:
@@ -198,7 +210,62 @@ class UpdateRoute(Route):
         if proxy:
             proxy = proxy.removesuffix("/")
 
+        existing_task = self._update_tasks.get(progress_id)
+        if existing_task and not existing_task.done():
+            return (
+                Response()
+                .ok(
+                    {"id": progress_id, "status": "running"},
+                    "更新任务正在进行中。",
+                )
+                .__dict__,
+                200,
+                CLEAR_SITE_DATA_HEADERS,
+            )
+
         self._init_update_progress(progress_id, version)
+        task = asyncio.create_task(
+            self._run_update_project(progress_id, version, latest, reboot, proxy),
+        )
+        self._update_tasks[progress_id] = task
+        task.add_done_callback(lambda _task: self._update_tasks.pop(progress_id, None))
+        return (
+            Response()
+            .ok(
+                {"id": progress_id, "status": "running"},
+                "更新任务已开始。",
+            )
+            .__dict__,
+            200,
+            CLEAR_SITE_DATA_HEADERS,
+        )
+
+    async def _run_update_project(
+        self,
+        progress_id: str,
+        version: str,
+        latest: bool,
+        reboot: bool,
+        proxy: str | None,
+    ) -> None:
+        """Run an update task outside the request lifecycle.
+
+        Args:
+            progress_id: Progress record id reported to the frontend.
+            version: Target version without the latest sentinel.
+            latest: Whether to install the latest release.
+            reboot: Whether to restart AstrBot after applying files.
+            proxy: Optional GitHub proxy URL.
+
+        Returns:
+            None.
+        """
+
+        update_temp_dir = Path(get_astrbot_system_tmp_path()) / "updates"
+        update_temp_dir.mkdir(parents=True, exist_ok=True)
+        update_token = uuid.uuid4().hex
+        dashboard_zip_path = update_temp_dir / f"{update_token}-dashboard.zip"
+        core_zip_path = update_temp_dir / f"{update_token}-core.zip"
         try:
             self._set_update_stage(
                 progress_id,
@@ -208,15 +275,17 @@ class UpdateRoute(Route):
                 0,
             )
             await download_dashboard(
+                path=str(dashboard_zip_path),
                 latest=latest,
                 version=version,
-                proxy=proxy,
+                proxy=proxy or "",
                 progress_callback=self._make_progress_callback(
                     progress_id,
                     "dashboard",
                     0,
                     45,
                 ),
+                extract=False,
             )
             self._set_update_stage(
                 progress_id,
@@ -233,16 +302,19 @@ class UpdateRoute(Route):
                 "正在下载 AstrBot 项目代码...",
                 45,
             )
-            await self.astrbot_updator.update(
-                latest=latest,
-                version=version,
-                proxy=proxy,
-                progress_callback=self._make_progress_callback(
-                    progress_id,
-                    "core",
-                    45,
-                    45,
-                ),
+            core_zip_path = Path(
+                await self.astrbot_updator.download_update_package(
+                    latest=latest,
+                    version=version,
+                    proxy=proxy or "",
+                    path=core_zip_path,
+                    progress_callback=self._make_progress_callback(
+                        progress_id,
+                        "core",
+                        45,
+                        45,
+                    ),
+                )
             )
             self._set_update_stage(
                 progress_id,
@@ -252,6 +324,50 @@ class UpdateRoute(Route):
                 90,
             )
 
+            self._set_update_stage(
+                progress_id,
+                "verify",
+                "running",
+                "下载完成，正在校验更新包...",
+                90,
+            )
+            for zip_path in (dashboard_zip_path, core_zip_path):
+                with zipfile.ZipFile(zip_path, "r") as archive:
+                    corrupt_member = archive.testzip()
+                if corrupt_member:
+                    raise RuntimeError(f"更新包校验失败: {corrupt_member}")
+            self._set_update_stage(
+                progress_id,
+                "verify",
+                "done",
+                "更新包校验完成。",
+                91,
+            )
+
+            self._set_update_stage(
+                progress_id,
+                "apply",
+                "running",
+                "下载完成，正在应用更新...",
+                91,
+            )
+            await asyncio.to_thread(
+                self.astrbot_updator.apply_update_package,
+                core_zip_path,
+            )
+            await asyncio.to_thread(
+                extract_dashboard,
+                dashboard_zip_path,
+                Path(get_astrbot_data_path()),
+            )
+            self._set_update_stage(
+                progress_id,
+                "apply",
+                "done",
+                "更新文件应用完成。",
+                92,
+            )
+
             # pip 更新依赖
             self._set_update_stage(
                 progress_id,
@@ -290,12 +406,7 @@ class UpdateRoute(Route):
                         "overall_percent": 100,
                     },
                 )
-                ret = (
-                    Response()
-                    .ok(None, "更新成功，AstrBot 将在 2 秒内全量重启以应用新的代码。")
-                    .__dict__
-                )
-                return ret, 200, CLEAR_SITE_DATA_HEADERS
+                return
             self.update_progress[progress_id].update(
                 {
                     "status": "success",
@@ -304,12 +415,14 @@ class UpdateRoute(Route):
                     "overall_percent": 100,
                 },
             )
-            ret = (
-                Response()
-                .ok(None, "更新成功，AstrBot 将在下次启动时应用新的代码。")
-                .__dict__
+        except asyncio.CancelledError:
+            self.update_progress[progress_id].update(
+                {
+                    "status": "error",
+                    "message": "更新任务已取消。",
+                },
             )
-            return ret, 200, CLEAR_SITE_DATA_HEADERS
+            logger.warning(f"Update task was cancelled: {progress_id}")
         except Exception as e:
             self.update_progress[progress_id].update(
                 {
@@ -318,7 +431,13 @@ class UpdateRoute(Route):
                 },
             )
             logger.error(f"/api/update_project: {traceback.format_exc()}")
-            return Response().error(e.__str__()).__dict__
+        finally:
+            for zip_path in (dashboard_zip_path, core_zip_path):
+                try:
+                    if zip_path.exists():
+                        zip_path.unlink()
+                except Exception as cleanup_exc:
+                    logger.warning(f"清理更新临时文件失败: {zip_path}, {cleanup_exc}")
 
     async def update_dashboard(self):
         try:
diff --git a/dashboard/src/layouts/full/vertical-header/VerticalHeader.vue b/dashboard/src/layouts/full/vertical-header/VerticalHeader.vue
index c41b566e7..6b57983c8 100644
--- a/dashboard/src/layouts/full/vertical-header/VerticalHeader.vue
+++ b/dashboard/src/layouts/full/vertical-header/VerticalHeader.vue
@@ -616,8 +616,12 @@ function applyUpdateProgress(payload: UpdateProgress) {
     },
   };
   if (payload.status === "success" || payload.status === "error") {
+    installLoading.value = false;
     stopUpdateProgressPolling();
   }
+  if (payload.stage === "restart") {
+    waitForAstrBotRestart(restartStartTime.value);
+  }
   if (payload.status === "success") {
     waitForAstrBotRestart(restartStartTime.value);
   }
@@ -673,20 +677,21 @@ async function switchVersion(targetVersion: string) {
     })
     .then((res) => {
       updateStatus.value = res.data.message;
-      updateProgress.value = {
-        ...updateProgress.value,
-        status:
-          res.data.status === "ok" ? "success" : updateProgress.value.status,
-        message: res.data.message,
-        overall_percent:
-          res.data.status === "ok" ? 100 : updateProgress.value.overall_percent,
-      };
-      if (res.data.status == "ok") {
-        waitForAstrBotRestart(initialStartTime);
+      if (res.data.status === "error") {
+        stopUpdateProgressPolling();
+        installLoading.value = false;
+        updateProgress.value = {
+          ...updateProgress.value,
+          status: "error",
+          message:
+            res.data.message || t("core.header.updateDialog.progress.failed"),
+        };
       }
     })
     .catch((err) => {
       console.log(err);
+      stopUpdateProgressPolling();
+      installLoading.value = false;
       updateStatus.value = err;
       updateProgress.value = {
         ...updateProgress.value,
@@ -696,10 +701,6 @@ async function switchVersion(targetVersion: string) {
           err?.message ||
           t("core.header.updateDialog.progress.failed"),
       };
-    })
-    .finally(() => {
-      installLoading.value = false;
-      stopUpdateProgressPolling();
     });
 }
 
diff --git a/pyproject.toml b/pyproject.toml
index 6326aeaa2..e5e8c3e58 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [project]
 name = "AstrBot"
-version = "4.25.5"
+version = "4.25.6-rc.1"
 description = "Easy-to-use multi-platform LLM chatbot and development framework"
 readme = "README.md"
 license = { text = "AGPL-3.0-or-later" }
@@ -120,7 +120,7 @@ exclude = ["dashboard", "node_modules", "dist", "data", "tests"]
 allow-direct-references = true
 
 # Include bundled dashboard dist even though it is not tracked by VCS.
-[tool.hatch.build.targets.wheel]
+[tool.hatch.build]
 artifacts = ["astrbot/dashboard/dist/**"]
 
 # Custom build hook: builds the Vue dashboard and copies dist into the package.
diff --git a/tests/test_dashboard.py b/tests/test_dashboard.py
index 596cdb25d..5bd3fd7d2 100644
--- a/tests/test_dashboard.py
+++ b/tests/test_dashboard.py
@@ -59,6 +59,34 @@ def _strip_query(url: str) -> str:
     return urlunsplit(("", "", parsed.path, "", parsed.fragment))
 
 
+async def _wait_for_update_progress(
+    test_client,
+    authenticated_header: dict,
+    progress_id: str,
+) -> dict:
+    """Wait until an update task reaches a terminal status.
+
+    Args:
+        test_client: Quart test client.
+        authenticated_header: Headers for authenticated dashboard requests.
+        progress_id: Update progress id to poll.
+
+    Returns:
+        The update progress response payload.
+    """
+
+    for _ in range(100):
+        response = await test_client.get(
+            f"/api/update/progress?id={progress_id}",
+            headers=authenticated_header,
+        )
+        data = await response.get_json()
+        if data["data"].get("status") in {"success", "error"}:
+            return data
+        await asyncio.sleep(0.01)
+    pytest.fail(f"Update task did not finish: {progress_id}")
+
+
 @pytest.fixture
 def registered_plugin_page(core_lifecycle_td: AstrBotCoreLifecycle, monkeypatch):
     plugin_root = (
@@ -2463,40 +2491,77 @@ async def test_do_update(
     authenticated_header: dict,
     core_lifecycle_td: AstrBotCoreLifecycle,
     monkeypatch,
-    tmp_path_factory,
+    tmp_path,
 ):
     test_client = app.test_client()
 
-    # Use a temporary path for the mock update to avoid side effects
-    temp_release_dir = tmp_path_factory.mktemp("release")
-    release_path = temp_release_dir / "astrbot"
-    calls = []
+    release_path = tmp_path / "astrbot"
+    calls: list[str] = []
 
-    async def mock_update(*args, **kwargs):
-        """Mocks the update process by creating a directory in the temp path."""
-        calls.append("core")
+    async def mock_download_update_package(*args, **kwargs):
+        """Mock the core package download by writing a valid ZIP archive."""
+        calls.append("download-core")
         callback = kwargs.get("progress_callback")
         if callback:
             callback({"downloaded": 10, "total": 10, "percent": 1, "speed": 1})
+        zip_path = Path(kwargs["path"])
+        with zipfile.ZipFile(zip_path, "w") as archive:
+            archive.writestr("AstrBot-v3.4.0/README.md", "core")
+        return zip_path
+
+    def mock_apply_update_package(zip_path):
+        """Mock applying the core package."""
+        calls.append("apply-core")
+        assert zipfile.is_zipfile(zip_path)
         os.makedirs(release_path, exist_ok=True)
 
     async def mock_download_dashboard(*args, **kwargs):
-        """Mocks the dashboard download to prevent network access."""
-        calls.append("dashboard")
+        """Mock the dashboard download by writing a valid ZIP archive."""
+        calls.append("download-dashboard")
         callback = kwargs.get("progress_callback")
         if callback:
             callback({"downloaded": 10, "total": 10, "percent": 1, "speed": 1})
-        return
+        zip_path = Path(kwargs["path"])
+        with zipfile.ZipFile(zip_path, "w") as archive:
+            archive.writestr("dist/index.html", "dashboard")
+
+    def mock_extract_dashboard(zip_path, extract_path):
+        """Mock applying the dashboard package."""
+        calls.append("apply-dashboard")
+        assert zipfile.is_zipfile(zip_path)
+        assert Path(extract_path) == tmp_path / "data"
 
     async def mock_pip_install(*args, **kwargs):
         """Mocks pip install to prevent actual installation."""
+        calls.append("pip")
         return
 
-    monkeypatch.setattr(core_lifecycle_td.astrbot_updator, "update", mock_update)
+    monkeypatch.setattr(
+        core_lifecycle_td.astrbot_updator,
+        "download_update_package",
+        mock_download_update_package,
+    )
+    monkeypatch.setattr(
+        core_lifecycle_td.astrbot_updator,
+        "apply_update_package",
+        mock_apply_update_package,
+    )
     monkeypatch.setattr(
         "astrbot.dashboard.routes.update.download_dashboard",
         mock_download_dashboard,
     )
+    monkeypatch.setattr(
+        "astrbot.dashboard.routes.update.extract_dashboard",
+        mock_extract_dashboard,
+    )
+    monkeypatch.setattr(
+        "astrbot.dashboard.routes.update.get_astrbot_system_tmp_path",
+        lambda: str(tmp_path / "tmp"),
+    )
+    monkeypatch.setattr(
+        "astrbot.dashboard.routes.update.get_astrbot_data_path",
+        lambda: str(tmp_path / "data"),
+    )
     monkeypatch.setattr(
         "astrbot.dashboard.routes.update.pip_installer.install",
         mock_pip_install,
@@ -2510,19 +2575,101 @@ async def test_do_update(
     assert response.status_code == 200
     data = await response.get_json()
     assert data["status"] == "ok"
-    assert os.path.exists(release_path)
-    assert calls[:2] == ["dashboard", "core"]
+    assert data["data"]["id"] == "test-progress"
+    assert data["data"]["status"] == "running"
 
-    progress_response = await test_client.get(
-        "/api/update/progress?id=test-progress",
-        headers=authenticated_header,
+    progress_data = await _wait_for_update_progress(
+        test_client,
+        authenticated_header,
+        "test-progress",
     )
-    progress_data = await progress_response.get_json()
+    assert os.path.exists(release_path)
+    assert calls == [
+        "download-dashboard",
+        "download-core",
+        "apply-core",
+        "apply-dashboard",
+        "pip",
+    ]
     assert progress_data["status"] == "ok"
     assert progress_data["data"]["status"] == "success"
     assert progress_data["data"]["overall_percent"] == 100
 
 
+@pytest.mark.asyncio
+async def test_do_update_does_not_apply_files_when_core_download_fails(
+    app: Quart,
+    authenticated_header: dict,
+    core_lifecycle_td: AstrBotCoreLifecycle,
+    monkeypatch,
+    tmp_path,
+):
+    test_client = app.test_client()
+    calls: list[str] = []
+
+    async def mock_download_dashboard(*args, **kwargs):
+        """Mock the dashboard download by writing a valid ZIP archive."""
+        calls.append("download-dashboard")
+        zip_path = Path(kwargs["path"])
+        with zipfile.ZipFile(zip_path, "w") as archive:
+            archive.writestr("dist/index.html", "dashboard")
+
+    async def mock_download_update_package(*args, **kwargs):
+        """Mock a core package download failure."""
+        calls.append("download-core")
+        raise RuntimeError("core download failed")
+
+    def fail_apply_update_package(*args, **kwargs):
+        """Ensure core files are not applied after a download failure."""
+        calls.append("apply-core")
+        raise AssertionError("core package should not be applied")
+
+    def fail_extract_dashboard(*args, **kwargs):
+        """Ensure dashboard files are not applied after a download failure."""
+        calls.append("apply-dashboard")
+        raise AssertionError("dashboard package should not be applied")
+
+    monkeypatch.setattr(
+        "astrbot.dashboard.routes.update.get_astrbot_system_tmp_path",
+        lambda: str(tmp_path / "tmp"),
+    )
+    monkeypatch.setattr(
+        "astrbot.dashboard.routes.update.download_dashboard",
+        mock_download_dashboard,
+    )
+    monkeypatch.setattr(
+        "astrbot.dashboard.routes.update.extract_dashboard",
+        fail_extract_dashboard,
+    )
+    monkeypatch.setattr(
+        core_lifecycle_td.astrbot_updator,
+        "download_update_package",
+        mock_download_update_package,
+    )
+    monkeypatch.setattr(
+        core_lifecycle_td.astrbot_updator,
+        "apply_update_package",
+        fail_apply_update_package,
+    )
+
+    response = await test_client.post(
+        "/api/update/do",
+        headers=authenticated_header,
+        json={"version": "v3.4.0", "reboot": False, "progress_id": "atomic-fail"},
+    )
+    data = await response.get_json()
+
+    assert response.status_code == 200
+    assert data["status"] == "ok"
+    progress_data = await _wait_for_update_progress(
+        test_client,
+        authenticated_header,
+        "atomic-fail",
+    )
+    assert progress_data["data"]["status"] == "error"
+    assert calls == ["download-dashboard", "download-core"]
+
+
 @pytest.mark.asyncio
 async def test_install_pip_package_returns_pip_install_error_message(
     app: Quart,
diff --git a/tests/test_updator_socks.py b/tests/test_updator_socks.py
index dc4c6e250..f5471f64a 100644
--- a/tests/test_updator_socks.py
+++ b/tests/test_updator_socks.py
@@ -1,14 +1,17 @@
 import ntpath
 import posixpath
+import zipfile
 from dataclasses import dataclass, field
 from pathlib import Path
 from types import SimpleNamespace
+from urllib.parse import urlparse
 
 import certifi
 import httpx
 import pytest
 
 from astrbot.core.star.updator import PluginUpdator
+from astrbot.core.updator import AstrBotUpdator
 from astrbot.core.zip_updator import RepoZipUpdator
 
 
@@ -286,6 +289,144 @@ async def test_plugin_updator_install_prefers_download_url(
     assert calls["unzip"] == (str(expected_path) + ".zip", str(expected_path))
 
 
+@pytest.mark.asyncio
+async def test_astrbot_updator_prefers_hosted_core_package(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    monkeypatch.delenv("ASTRBOT_CLI", raising=False)
+    monkeypatch.delenv("ASTRBOT_LAUNCHER", raising=False)
+    monkeypatch.setenv("ASTRBOT_CORE_PACKAGE_BASE_URL", "https://cdn.example/core")
+
+    updator = AstrBotUpdator()
+    calls: list[str] = []
+
+    async def fake_fetch_release_info(url: str, latest: bool = True):  # noqa: ARG001
+        return [
+            {
+                "version": "AstrBot v99.0.0",
+                "published_at": "2026-06-19T00:00:00Z",
+                "body": "hosted core package",
+                "tag_name": "v99.0.0",
+                "zipball_url": "https://github.example/archive.zip",
+            }
+        ]
+
+    async def fake_download_file(url: str, path: str, progress_callback=None):  # noqa: ARG001
+        calls.append(url)
+        with zipfile.ZipFile(path, "w") as archive:
+            archive.writestr("AstrBot-v99.0.0/README.md", "hosted-core")
+
+    monkeypatch.setattr(updator, "fetch_release_info", fake_fetch_release_info)
+    monkeypatch.setattr(updator, "_download_file", fake_download_file)
+
+    zip_path = await updator.download_update_package(
+        latest=False,
+        version="v99.0.0",
+        path=tmp_path / "core.zip",
+    )
+
+    assert zip_path == tmp_path / "core.zip"
+    assert zipfile.is_zipfile(zip_path)
+    assert calls == ["https://cdn.example/core/v99.0.0/source.zip"]
+
+
+@pytest.mark.asyncio
+async def test_astrbot_updator_falls_back_when_hosted_core_package_fails(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    monkeypatch.delenv("ASTRBOT_CLI", raising=False)
+    monkeypatch.delenv("ASTRBOT_LAUNCHER", raising=False)
+    monkeypatch.setenv("ASTRBOT_CORE_PACKAGE_BASE_URL", "https://cdn.example/core")
+
+    updator = AstrBotUpdator()
+    calls: list[str] = []
+
+    async def fake_fetch_release_info(url: str, latest: bool = True):  # noqa: ARG001
+        return [
+            {
+                "version": "AstrBot v99.0.0",
+                "published_at": "2026-06-19T00:00:00Z",
+                "body": "hosted core package",
+                "tag_name": "v99.0.0",
+                "zipball_url": "https://github.example/archive.zip",
+            }
+        ]
+
+    async def fake_download_file(url: str, path: str, progress_callback=None):  # noqa: ARG001
+        calls.append(url)
+        parsed = urlparse(url)
+        if parsed.scheme == "https" and parsed.hostname == "cdn.example":
+            raise RuntimeError("404")
+        Path(path).write_bytes(b"github-core")
+
+    monkeypatch.setattr(updator, "fetch_release_info", fake_fetch_release_info)
+    monkeypatch.setattr(updator, "_download_file", fake_download_file)
+
+    zip_path = await updator.download_update_package(
+        latest=False,
+        version="v99.0.0",
+        path=tmp_path / "core.zip",
+    )
+
+    assert zip_path == tmp_path / "core.zip"
+    assert zip_path.read_bytes() == b"github-core"
+    assert calls == [
+        "https://cdn.example/core/v99.0.0/source.zip",
+        "https://github.example/archive.zip",
+    ]
+
+
+@pytest.mark.asyncio
+async def test_astrbot_updator_falls_back_when_hosted_core_package_is_not_zip(
+    monkeypatch: pytest.MonkeyPatch,
+    tmp_path: Path,
+) -> None:
+    monkeypatch.delenv("ASTRBOT_CLI", raising=False)
+    monkeypatch.delenv("ASTRBOT_LAUNCHER", raising=False)
+    monkeypatch.setenv("ASTRBOT_CORE_PACKAGE_BASE_URL", "https://cdn.example/core")
+
+    updator = AstrBotUpdator()
+    calls: list[str] = []
+
+    async def fake_fetch_release_info(url: str, latest: bool = True):  # noqa: ARG001
+        return [
+            {
+                "version": "AstrBot v99.0.0",
+                "published_at": "2026-06-19T00:00:00Z",
+                "body": "hosted core package",
+                "tag_name": "v99.0.0",
+                "zipball_url": "https://github.example/archive.zip",
+            }
+        ]
+
+    async def fake_download_file(url: str, path: str, progress_callback=None):  # noqa: ARG001
+        calls.append(url)
+        parsed = urlparse(url)
+        if parsed.scheme == "https" and parsed.hostname == "cdn.example":
+            Path(path).write_bytes(b"not a zip")
+            return
+        with zipfile.ZipFile(path, "w") as archive:
+            archive.writestr("AstrBot-v99.0.0/README.md", "github-core")
+
+    monkeypatch.setattr(updator, "fetch_release_info", fake_fetch_release_info)
+    monkeypatch.setattr(updator, "_download_file", fake_download_file)
+
+    zip_path = await updator.download_update_package(
+        latest=False,
+        version="v99.0.0",
+        path=tmp_path / "core.zip",
+    )
+
+    assert zip_path == tmp_path / "core.zip"
+    assert zipfile.is_zipfile(zip_path)
+    assert calls == [
+        "https://cdn.example/core/v99.0.0/source.zip",
+        "https://github.example/archive.zip",
+    ]
+
+
 @pytest.mark.asyncio
 async def test_fetch_release_info_uses_httpx_client_with_env_proxy_support(
     monkeypatch: pytest.MonkeyPatch,