diff --git a/app/core/config/config_manager.py b/app/core/config/config_manager.py
index cf62360..c0e271b 100644
--- a/app/core/config/config_manager.py
+++ b/app/core/config/config_manager.py
@@ -1,12 +1,14 @@
 import json
 import os
 import shutil
-from typing import Any
+from typing import TypeVar
 
 import aiofiles
 
 from ...utils.logger import logger
 
+T = TypeVar("T")
+
 
 class ConfigManager:
     def __init__(self, run_path):
@@ -163,7 +165,7 @@ class ConfigManager:
             error_message="An error occurred while saving cookies config",
         )
 
-    def get_config_value(self, key: str, default: Any = None):
+    def get_config_value(self, key: str, default: T = None) -> T:
         user_config = self.load_user_config()
         default_config = self.load_default_config()
         return user_config.get(key, default_config.get(key, default))
diff --git a/app/core/recording/stream_manager.py b/app/core/recording/stream_manager.py
index 1338665..0348a79 100644
--- a/app/core/recording/stream_manager.py
+++ b/app/core/recording/stream_manager.py
@@ -4,7 +4,7 @@ import shutil
 import subprocess
 import time
 from datetime import datetime
-from typing import Any
+from typing import TypeVar
 
 from ...messages import desktop_notify, message_pusher
 from ...models.media.video_quality_model import VideoQuality
@@ -17,6 +17,8 @@ from ..platforms import platform_handlers
 from ..platforms.platform_handlers import StreamData
 from ..runtime.process_manager import BackgroundService
 
+T = TypeVar("T")
+
 
 class LiveStreamRecorder:
     DEFAULT_SEGMENT_TIME = "1800"
@@ -54,7 +56,7 @@ class LiveStreamRecorder:
         for key in ("recording_manager", "stream_manager"):
             self._.update(language.get(key, {}))
 
-    def _get_info(self, key: str, default: Any = None):
+    def _get_info(self, key: str, default: T = None) -> T:
         return self.recording_info.get(key, default) or default
 
     def is_use_proxy(self):
@@ -739,5 +741,4 @@ class LiveStreamRecorder:
             msg_title = msg_title or self._["status_notify"]
 
             self.app.page.run_task(msg_manager.push_messages, msg_title, push_content)
-
-
+            
diff --git a/app/core/update/update_checker.py b/app/core/update/update_checker.py
index 41c03de..1fe27bd 100644
--- a/app/core/update/update_checker.py
+++ b/app/core/update/update_checker.py
@@ -1,7 +1,7 @@
 import asyncio
 import json
 import os
-from typing import Any
+from typing import Any, Literal, TypedDict
 
 import flet as ft
 import httpx
@@ -9,6 +9,41 @@ import httpx
 from ...utils.logger import logger
 
 
+class UpdateSource(TypedDict):
+    name: str
+    enabled: bool
+    priority: int
+    type: Literal["github", "custom"]
+    repo: str
+    url: str
+    timeout: int
+
+
+class SuccessfulUpdateInfo(TypedDict):
+    has_update: Literal[True]
+    latest_version: str
+    current_version: str
+    release_notes: str
+    download_url: str
+    download_urls: dict[str, str]
+    source: str
+
+
+class FailedUpdateInfo(TypedDict):
+    has_update: Literal[False]
+    error: str
+    source: str
+
+
+UpdateInfo = SuccessfulUpdateInfo | FailedUpdateInfo
+
+
+class UpdateConfig(TypedDict):
+    update_sources: list[UpdateSource]
+    check_interval: int
+    auto_check: bool
+
+
 class UpdateChecker:
     def __init__(self, app):
         self.app = app
@@ -26,7 +61,7 @@ class UpdateChecker:
             return "0.0.0"
 
     @staticmethod
-    def _load_update_config() -> dict[str, Any]:
+    def _load_update_config() -> UpdateConfig:
         auto_check = os.getenv("AUTO_CHECK_UPDATE", "false").lower() == "true"
         update_source = os.getenv("UPDATE_SOURCE", "both").lower()
         github_repo = os.getenv("GITHUB_REPO", "ihmily/StreamCap")
@@ -42,6 +77,7 @@ class UpdateChecker:
                 "priority": 1 if update_source == "github" else 0,
                 "type": "github",
                 "repo": github_repo,
+                "url": "https://api.github.com/repos/" + github_repo + "/releases/latest",
                 "timeout": 10
             })
         
@@ -51,6 +87,7 @@ class UpdateChecker:
                 "enabled": True,
                 "priority": 1 if update_source == "custom" else 2,
                 "type": "custom",
+                "repo": custom_api,
                 "url": custom_api,
                 "timeout": 5
             })
@@ -61,7 +98,7 @@ class UpdateChecker:
             "auto_check": auto_check
         }
     
-    async def check_for_updates(self) -> dict[str, Any]:
+    async def check_for_updates(self) -> UpdateInfo:
         """Check for updates, prioritizing sources with higher priority"""
         sources = sorted(
             [s for s in self.update_config["update_sources"] if s["enabled"]],
@@ -94,7 +131,7 @@ class UpdateChecker:
         
         return results[-1] if results else {"has_update": False, "error": "All update sources check failed"}
     
-    async def _check_github_update(self, source: dict[str, Any]) -> dict[str, Any]:
+    async def _check_github_update(self, source: UpdateSource) -> UpdateInfo:
         """Check for updates from GitHub"""
         try:
             timeout = httpx.Timeout(source["timeout"])
@@ -132,7 +169,7 @@ class UpdateChecker:
             logger.error(f"Failed to check update from GitHub: {e}")
             return {"has_update": False, "error": str(e), "source": source["name"]}
     
-    async def _check_custom_update(self, source: dict[str, Any]) -> dict[str, Any]:
+    async def _check_custom_update(self, source: UpdateSource) -> UpdateInfo:
         """Check for updates from custom source
         
         Expected API Response Format: