diff --git a/app/api/detail/route.ts b/app/api/detail/route.ts
index ff4db7b..41fdf9a 100644
--- a/app/api/detail/route.ts
+++ b/app/api/detail/route.ts
@@ -61,30 +61,13 @@ export async function GET(request: NextRequest) {
       );
     }
 
-    // Fetch video detail with automatic episode validation
+    // Fetch video detail without validation (already validated during search)
     try {
       const videoDetail = await getVideoDetail(id, sourceConfig);
       
-      // Validate episodes to filter out broken sources
-      if (videoDetail.episodes && videoDetail.episodes.length > 0) {
-        console.log(`[GET] Validating ${videoDetail.episodes.length} episodes for video ${id}...`);
-        const validatedEpisodes = await filterValidEpisodes(videoDetail.episodes);
-        const workingEpisodes = validatedEpisodes.filter(ep => ep.isValid);
-        
-        console.log(`[GET] Found ${workingEpisodes.length} working episodes out of ${videoDetail.episodes.length}`);
-        
-        if (workingEpisodes.length === 0) {
-          return NextResponse.json(
-            {
-              success: false,
-              error: 'No playable episodes found from this source. Please try another source.',
-            },
-            { status: 404 }
-          );
-        }
-        
-        videoDetail.episodes = workingEpisodes;
-      }
+      // Skip validation - videos are already checked during search
+      // Just return the episodes as-is
+      console.log(`[GET] Fetching video details for ${id} from ${sourceConfig.name}`);
       
       return NextResponse.json({
         success: true,
@@ -165,30 +148,13 @@ export async function POST(request: NextRequest) {
       );
     }
 
-    // Fetch video detail with automatic episode validation
+    // Fetch video detail without validation (already validated during search)
     try {
       const videoDetail = await getVideoDetail(id, sourceConfig);
       
-      // Validate episodes to filter out broken sources
-      if (videoDetail.episodes && videoDetail.episodes.length > 0) {
-        console.log(`[POST] Validating ${videoDetail.episodes.length} episodes for video ${id}...`);
-        const validatedEpisodes = await filterValidEpisodes(videoDetail.episodes);
-        const workingEpisodes = validatedEpisodes.filter(ep => ep.isValid);
-        
-        console.log(`[POST] Found ${workingEpisodes.length} working episodes out of ${videoDetail.episodes.length}`);
-        
-        if (workingEpisodes.length === 0) {
-          return NextResponse.json(
-            {
-              success: false,
-              error: 'No playable episodes found from this source. Please try another source.',
-            },
-            { status: 404 }
-          );
-        }
-        
-        videoDetail.episodes = workingEpisodes;
-      }
+      // Skip validation - videos are already checked during search
+      // Just return the episodes as-is
+      console.log(`[POST] Fetching video details for ${id} from ${sourceConfig.name}`);
       
       return NextResponse.json({
         success: true,
diff --git a/app/api/search-stream/route.ts b/app/api/search-stream/route.ts
index e5b2f3a..a9dad57 100644
--- a/app/api/search-stream/route.ts
+++ b/app/api/search-stream/route.ts
@@ -102,9 +102,9 @@ export async function POST(request: NextRequest) {
 
         const availableVideos: any[] = [];
         let checkedCount = 0;
-        const concurrency = 5; // Smaller batches for faster response
+        const concurrency = 10; // Check 10 videos at a time
 
-        // Process videos in smaller batches for immediate feedback
+        // Process videos in batches for immediate feedback
         for (let i = 0; i < allVideos.length; i += concurrency) {
           const batch = allVideos.slice(i, i + concurrency);
           
diff --git a/app/favicon.ico b/app/favicon.ico
deleted file mode 100644
index 718d6fe..0000000
Binary files a/app/favicon.ico and /dev/null differ
diff --git a/app/icon.png b/app/icon.png
new file mode 100644
index 0000000..b346b5f
Binary files /dev/null and b/app/icon.png differ
diff --git a/app/layout.tsx b/app/layout.tsx
index 5dc2920..692d3d9 100644
--- a/app/layout.tsx
+++ b/app/layout.tsx
@@ -16,9 +16,6 @@ const geistMono = Geist_Mono({
 export const metadata: Metadata = {
   title: "KVideo - 视频聚合平台",
   description: "Multi-source video aggregation platform with beautiful Liquid Glass UI",
-  icons: {
-    icon: '/favicon.ico',
-  },
 };
 
 export default function RootLayout({
diff --git a/app/page.tsx b/app/page.tsx
index 301e501..3a203d0 100644
--- a/app/page.tsx
+++ b/app/page.tsx
@@ -224,7 +224,7 @@ export default function Home() {
             <div className="flex items-center gap-3">
               <div className="w-10 h-10 relative flex items-center justify-center">
                 <Image 
-                  src="/favicon.ico" 
+                  src="/icon.png" 
                   alt="KVideo" 
                   width={40} 
                   height={40}
diff --git a/app/player/page.tsx b/app/player/page.tsx
index 0cd9999..df8010c 100644
--- a/app/player/page.tsx
+++ b/app/player/page.tsx
@@ -156,11 +156,11 @@ function PlayerContent() {
           <div className="flex items-center justify-between">
             <Button 
               variant="secondary" 
-              onClick={() => router.push('/')}
+              onClick={() => router.back()}
               className="flex items-center gap-2"
             >
               <Icons.ChevronLeft size={20} />
-              <span>返回首页</span>
+              <span>返回</span>
             </Button>
             <ThemeSwitcher />
           </div>
@@ -182,11 +182,11 @@ function PlayerContent() {
               <div className="flex gap-3 justify-center">
                 <Button 
                   variant="primary"
-                  onClick={() => router.push('/')}
+                  onClick={() => router.back()}
                   className="flex items-center gap-2"
                 >
                   <Icons.ChevronLeft size={20} />
-                  <span>返回搜索其他源</span>
+                  <span>返回</span>
                 </Button>
                 <Button 
                   variant="secondary"
@@ -229,11 +229,11 @@ function PlayerContent() {
                               </Button>
                               <Button 
                                 variant="secondary"
-                                onClick={() => router.push('/')}
+                                onClick={() => router.back()}
                                 className="flex items-center gap-2"
                               >
                                 <Icons.ChevronLeft size={16} />
-                                <span>选择其他源</span>
+                                <span>返回</span>
                               </Button>
                             </div>
                           </div>
diff --git a/public/icon.png b/public/icon.png
new file mode 100644
index 0000000..b346b5f
Binary files /dev/null and b/public/icon.png differ