diff --git a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageBundleOperation.cs b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageBundleOperation.cs
index 7b0fc57f..bacb2bb6 100644
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultCacheFileSystem/Operation/internal/DownloadPackageBundleOperation.cs
@@ -20,7 +20,7 @@ namespace YooAsset
         private UnityDownloadFileOperation _unityDownloadFileOp;
 
         protected int _requestCount = 0;
-        protected float _tryAgainTimer;
+        protected float _tryAgainTimer = 0;
         protected int _failedTryAgain;
         private ESteps _steps = ESteps.None;
 
diff --git a/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/DownloadVirutalBundleOperation.cs b/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/DownloadVirutalBundleOperation.cs
index 963c378f..7c6b06a6 100644
--- a/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/DownloadVirutalBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/DefaultEditorFileSystem/Operation/internal/DownloadVirutalBundleOperation.cs
@@ -20,7 +20,7 @@ namespace YooAsset
         protected UnityVirtualBundleRequestOperation _unityDownloadFileOp;
 
         protected int _requestCount = 0;
-        protected float _tryAgainTimer;
+        protected float _tryAgainTimer = 0;
         protected int _failedTryAgain;
         private ESteps _steps = ESteps.None;
 
diff --git a/Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebEncryptAssetBundleOperation.cs b/Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebEncryptAssetBundleOperation.cs
index a2a3764d..71561246 100644
--- a/Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebEncryptAssetBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebEncryptAssetBundleOperation.cs
@@ -18,15 +18,16 @@ namespace YooAsset
         private readonly IWebDecryptionServices _decryptionServices;
         private UnityWebDataRequestOperation _unityWebDataRequestOp;
 
-        protected int _requestCount = 0;
-        protected float _tryAgainTimer;
-        protected int _failedTryAgain;
+        private int _requestCount = 0;
+        private float _tryAgainTimer = 0;
+        private int _failedTryAgain;
         private ESteps _steps = ESteps.None;
 
         internal LoadWebEncryptAssetBundleOperation(PackageBundle bundle, DownloadFileOptions options, IWebDecryptionServices decryptionServices)
         {
             _bundle = bundle;
             _options = options;
+            _failedTryAgain = options.FailedTryAgain;
             _decryptionServices = decryptionServices;
         }
         internal override void InternalStart()
diff --git a/Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebNormalAssetBundleOperation.cs b/Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebNormalAssetBundleOperation.cs
index 1e9e9e0b..f3fa65f8 100644
--- a/Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebNormalAssetBundleOperation.cs
+++ b/Assets/YooAsset/Runtime/FileSystem/WebGame/Operation/LoadWebNormalAssetBundleOperation.cs
@@ -18,9 +18,9 @@ namespace YooAsset
         private readonly bool _disableUnityWebCache;
         private UnityAssetBundleRequestOperation _unityAssetBundleRequestOp;
 
-        protected int _requestCount = 0;
-        protected float _tryAgainTimer;
-        protected int _failedTryAgain;
+        private int _requestCount = 0;
+        private float _tryAgainTimer = 0;
+        private int _failedTryAgain;
         private ESteps _steps = ESteps.None;
 
 
@@ -28,6 +28,7 @@ namespace YooAsset
         {
             _bundle = bundle;
             _options = options;
+            _failedTryAgain = options.FailedTryAgain;
             _disableUnityWebCache = disableUnityWebCache;
         }
         internal override void InternalStart()
diff --git a/Assets/YooAsset/Samples~/Mini Game/Runtime/AlipayFileSystem/Operation/APFSDownloadFileOperation.cs b/Assets/YooAsset/Samples~/Mini Game/Runtime/AlipayFileSystem/Operation/APFSDownloadFileOperation.cs
index 3e49047b..d87bf1e1 100644
--- a/Assets/YooAsset/Samples~/Mini Game/Runtime/AlipayFileSystem/Operation/APFSDownloadFileOperation.cs	
+++ b/Assets/YooAsset/Samples~/Mini Game/Runtime/AlipayFileSystem/Operation/APFSDownloadFileOperation.cs	
@@ -16,8 +16,9 @@ internal class APFSDownloadFileOperation : FSDownloadFileOperation
     private readonly AlipayFileSystem _fileSystem;
     private readonly DownloadFileOptions _options;
     private UnityWebCacheRequestOperation _webCacheRequestOp;
+
     private int _requestCount = 0;
-    private float _tryAgainTimer;
+    private float _tryAgainTimer = 0;
     private int _failedTryAgain;
     private ESteps _steps = ESteps.None;
 
@@ -25,6 +26,7 @@ internal class APFSDownloadFileOperation : FSDownloadFileOperation
     {
         _fileSystem = fileSystem;
         _options = options;
+        _failedTryAgain = options.FailedTryAgain;
     }
     internal override void InternalStart()
     {
diff --git a/Assets/YooAsset/Samples~/Mini Game/Runtime/AlipayFileSystem/Operation/internal/LoadAlipayAssetBundleOperation.cs b/Assets/YooAsset/Samples~/Mini Game/Runtime/AlipayFileSystem/Operation/internal/LoadAlipayAssetBundleOperation.cs
index 8174fdf9..1b5558ca 100644
--- a/Assets/YooAsset/Samples~/Mini Game/Runtime/AlipayFileSystem/Operation/internal/LoadAlipayAssetBundleOperation.cs	
+++ b/Assets/YooAsset/Samples~/Mini Game/Runtime/AlipayFileSystem/Operation/internal/LoadAlipayAssetBundleOperation.cs	
@@ -20,7 +20,7 @@ namespace YooAsset
         private UnityAlipayAssetBundleRequestOperation _unityAssetBundleRequestOp;
 
         private int _requestCount = 0;
-        private float _tryAgainTimer;
+        private float _tryAgainTimer = 0;
         private int _failedTryAgain;
         private ESteps _steps = ESteps.None;
 
@@ -29,6 +29,7 @@ namespace YooAsset
         {
             _bundle = bundle;
             _options = options;
+            _failedTryAgain = options.FailedTryAgain;
         }
         internal override void InternalStart()
         {
diff --git a/Assets/YooAsset/Samples~/Mini Game/Runtime/TaptapFileSystem/Operation/TPFSDownloadFileOperation.cs b/Assets/YooAsset/Samples~/Mini Game/Runtime/TaptapFileSystem/Operation/TPFSDownloadFileOperation.cs
index 40bfaf60..4f909423 100644
--- a/Assets/YooAsset/Samples~/Mini Game/Runtime/TaptapFileSystem/Operation/TPFSDownloadFileOperation.cs	
+++ b/Assets/YooAsset/Samples~/Mini Game/Runtime/TaptapFileSystem/Operation/TPFSDownloadFileOperation.cs	
@@ -16,8 +16,9 @@ internal class TPFSDownloadFileOperation : FSDownloadFileOperation
     private readonly TaptapFileSystem _fileSystem;
     private readonly DownloadFileOptions _options;
     private UnityWebCacheRequestOperation _webCacheRequestOp;
+
     private int _requestCount = 0;
-    private float _tryAgainTimer;
+    private float _tryAgainTimer = 0;
     private int _failedTryAgain;
     private ESteps _steps = ESteps.None;
 
@@ -25,6 +26,7 @@ internal class TPFSDownloadFileOperation : FSDownloadFileOperation
     {
         _fileSystem = fileSystem;
         _options = options;
+        _failedTryAgain = options.FailedTryAgain;
     }
     internal override void InternalStart()
     {
diff --git a/Assets/YooAsset/Samples~/Mini Game/Runtime/TaptapFileSystem/Operation/internal/LoadTaptapAssetBundleOperation.cs b/Assets/YooAsset/Samples~/Mini Game/Runtime/TaptapFileSystem/Operation/internal/LoadTaptapAssetBundleOperation.cs
index 71a6fac8..797229a9 100644
--- a/Assets/YooAsset/Samples~/Mini Game/Runtime/TaptapFileSystem/Operation/internal/LoadTaptapAssetBundleOperation.cs	
+++ b/Assets/YooAsset/Samples~/Mini Game/Runtime/TaptapFileSystem/Operation/internal/LoadTaptapAssetBundleOperation.cs	
@@ -19,7 +19,7 @@ namespace YooAsset
         private UnityTaptapAssetBundleRequestOperation _unityAssetBundleRequestOp;
         
         private int _requestCount = 0;
-        private float _tryAgainTimer;
+        private float _tryAgainTimer = 0;
         private int _failedTryAgain;
         private ESteps _steps = ESteps.None;
 
@@ -28,6 +28,7 @@ namespace YooAsset
         {
             _bundle = bundle;
             _options = options;
+            _failedTryAgain = options.FailedTryAgain;
         }
         internal override void InternalStart()
         {
diff --git a/Assets/YooAsset/Samples~/Mini Game/Runtime/TiktokFileSystem/Operation/TTFSDownloadFileOperation.cs b/Assets/YooAsset/Samples~/Mini Game/Runtime/TiktokFileSystem/Operation/TTFSDownloadFileOperation.cs
index b41bb877..68aabd64 100644
--- a/Assets/YooAsset/Samples~/Mini Game/Runtime/TiktokFileSystem/Operation/TTFSDownloadFileOperation.cs	
+++ b/Assets/YooAsset/Samples~/Mini Game/Runtime/TiktokFileSystem/Operation/TTFSDownloadFileOperation.cs	
@@ -16,8 +16,9 @@ internal class TTFSDownloadFileOperation : FSDownloadFileOperation
     private readonly TiktokFileSystem _fileSystem;
     private readonly DownloadFileOptions _options;
     private UnityWebCacheRequestOperation _webCacheRequestOp;
+
     private int _requestCount = 0;
-    private float _tryAgainTimer;
+    private float _tryAgainTimer = 0;
     private int _failedTryAgain;
     private ESteps _steps = ESteps.None;
 
@@ -25,6 +26,7 @@ internal class TTFSDownloadFileOperation : FSDownloadFileOperation
     {
         _fileSystem = fileSystem;
         _options = options;
+        _failedTryAgain = options.FailedTryAgain;
     }
     internal override void InternalStart()
     {
diff --git a/Assets/YooAsset/Samples~/Mini Game/Runtime/TiktokFileSystem/Operation/internal/LoadTiktokAssetBundleOperation.cs b/Assets/YooAsset/Samples~/Mini Game/Runtime/TiktokFileSystem/Operation/internal/LoadTiktokAssetBundleOperation.cs
index 57a34dc0..3e51fb9d 100644
--- a/Assets/YooAsset/Samples~/Mini Game/Runtime/TiktokFileSystem/Operation/internal/LoadTiktokAssetBundleOperation.cs	
+++ b/Assets/YooAsset/Samples~/Mini Game/Runtime/TiktokFileSystem/Operation/internal/LoadTiktokAssetBundleOperation.cs	
@@ -19,7 +19,7 @@ namespace YooAsset
         private UnityTiktokAssetBundleRequestOperation _unityAssetBundleRequestOp;
 
         private int _requestCount = 0;
-        private float _tryAgainTimer;
+        private float _tryAgainTimer = 0;
         private int _failedTryAgain;
         private ESteps _steps = ESteps.None;
 
@@ -28,6 +28,7 @@ namespace YooAsset
         {
             _bundle = bundle;
             _options = options;
+            _failedTryAgain = options.FailedTryAgain;
         }
         internal override void InternalStart()
         {
diff --git a/Assets/YooAsset/Samples~/Mini Game/Runtime/WechatFileSystem/Operation/WXFSDownloadFileOperation.cs b/Assets/YooAsset/Samples~/Mini Game/Runtime/WechatFileSystem/Operation/WXFSDownloadFileOperation.cs
index 32b022b2..88ed1d7b 100644
--- a/Assets/YooAsset/Samples~/Mini Game/Runtime/WechatFileSystem/Operation/WXFSDownloadFileOperation.cs	
+++ b/Assets/YooAsset/Samples~/Mini Game/Runtime/WechatFileSystem/Operation/WXFSDownloadFileOperation.cs	
@@ -16,8 +16,9 @@ internal class WXFSDownloadFileOperation : FSDownloadFileOperation
     private readonly WechatFileSystem _fileSystem;
     private readonly DownloadFileOptions _options;
     private UnityWebCacheRequestOperation _webCacheRequestOp;
+
     private int _requestCount = 0;
-    private float _tryAgainTimer;
+    private float _tryAgainTimer = 0;
     private int _failedTryAgain;
     private ESteps _steps = ESteps.None;
 
@@ -25,6 +26,7 @@ internal class WXFSDownloadFileOperation : FSDownloadFileOperation
     {
         _fileSystem = fileSystem;
         _options = options;
+        _failedTryAgain = options.FailedTryAgain;
     }
     internal override void InternalStart()
     {
diff --git a/Assets/YooAsset/Samples~/Mini Game/Runtime/WechatFileSystem/Operation/internal/LoadWechatAssetBundleOperation.cs b/Assets/YooAsset/Samples~/Mini Game/Runtime/WechatFileSystem/Operation/internal/LoadWechatAssetBundleOperation.cs
index ee25f9f7..5217a005 100644
--- a/Assets/YooAsset/Samples~/Mini Game/Runtime/WechatFileSystem/Operation/internal/LoadWechatAssetBundleOperation.cs	
+++ b/Assets/YooAsset/Samples~/Mini Game/Runtime/WechatFileSystem/Operation/internal/LoadWechatAssetBundleOperation.cs	
@@ -19,7 +19,7 @@ namespace YooAsset
         private UnityWechatAssetBundleRequestOperation _unityAssetBundleRequestOp;
 
         private int _requestCount = 0;
-        private float _tryAgainTimer;
+        private float _tryAgainTimer = 0;
         private int _failedTryAgain;
         private ESteps _steps = ESteps.None;
 
@@ -28,6 +28,7 @@ namespace YooAsset
         {
             _bundle = bundle;
             _options = options;
+            _failedTryAgain = options.FailedTryAgain;
         }
         internal override void InternalStart()
         {