diff --git a/Assets/YooAsset/Runtime/PatchSystem/Download/FileDownloader.cs b/Assets/YooAsset/Runtime/PatchSystem/Download/FileDownloader.cs
index 40a8e13..3c29c5b 100644
--- a/Assets/YooAsset/Runtime/PatchSystem/Download/FileDownloader.cs
+++ b/Assets/YooAsset/Runtime/PatchSystem/Download/FileDownloader.cs
@@ -238,5 +238,13 @@ namespace YooAsset
 		{
 			YooLogger.Error($"Failed to download : {_requestURL} Error : {_lastError}");
 		}
+
+		/// <summary>
+		/// 获取最近一条错误日志
+		/// </summary>
+		public string GetLastError()
+		{
+			return _lastError;
+		}
 	}
 }
\ No newline at end of file
diff --git a/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebRequester.cs b/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebDataRequester.cs
similarity index 98%
rename from Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebRequester.cs
rename to Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebDataRequester.cs
index 0e11dcc..9424ef9 100644
--- a/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebRequester.cs
+++ b/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebDataRequester.cs
@@ -9,7 +9,7 @@ namespace YooAsset
 	/// 下载器
 	/// 说明：UnityWebRequest(UWR) supports reading streaming assets since 2017.1
 	/// </summary>
-	internal class UnityWebRequester
+	internal class UnityWebDataRequester
 	{
 		protected UnityWebRequest _webRequest;
 		protected UnityWebRequestAsyncOperation _operationHandle;
diff --git a/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebRequester.cs.meta b/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebDataRequester.cs.meta
similarity index 100%
rename from Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebRequester.cs.meta
rename to Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebDataRequester.cs.meta
diff --git a/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebFileRequester.cs b/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebFileRequester.cs
new file mode 100644
index 0000000..9ce83e2
--- /dev/null
+++ b/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebFileRequester.cs
@@ -0,0 +1,90 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine.Networking;
+
+namespace YooAsset
+{
+	/// <summary>
+	/// 下载器
+	/// 说明：UnityWebRequest(UWR) supports reading streaming assets since 2017.1
+	/// </summary>
+	internal class UnityWebFileRequester
+	{
+		protected UnityWebRequest _webRequest;
+		protected UnityWebRequestAsyncOperation _operationHandle;
+
+		/// <summary>
+		/// 请求URL地址
+		/// </summary>
+		public string URL { private set; get; }
+
+
+		/// <summary>
+		/// 发送GET请求
+		/// </summary>
+		public void SendRequest(string url, string savePath)
+		{
+			if (_webRequest == null)
+			{
+				URL = url;
+				_webRequest = new UnityWebRequest(URL, UnityWebRequest.kHttpVerbGET);
+				DownloadHandlerFile handler = new DownloadHandlerFile(savePath);
+				handler.removeFileOnAbort = true;
+				_webRequest.downloadHandler = handler;
+				_webRequest.disposeDownloadHandlerOnDispose = true;
+				_operationHandle = _webRequest.SendWebRequest();
+			}
+		}
+
+		/// <summary>
+		/// 释放下载器
+		/// </summary>
+		public void Dispose()
+		{
+			if (_webRequest != null)
+			{
+				_webRequest.Dispose();
+				_webRequest = null;
+				_operationHandle = null;
+			}
+		}
+
+		/// <summary>
+		/// 是否完毕（无论成功失败）
+		/// </summary>
+		public bool IsDone()
+		{
+			if (_operationHandle == null)
+				return false;
+			return _operationHandle.isDone;
+		}
+
+		/// <summary>
+		/// 下载是否发生错误
+		/// </summary>
+		public bool HasError()
+		{
+#if UNITY_2020_3_OR_NEWER
+			return _webRequest.result != UnityWebRequest.Result.Success;
+#else
+			if (_webRequest.isNetworkError || _webRequest.isHttpError)
+				return true;
+			else
+				return false;
+#endif
+		}
+
+		/// <summary>
+		/// 获取错误信息
+		/// </summary>
+		public string GetError()
+		{
+			if (_webRequest != null)
+			{
+				return $"URL : {URL} Error : {_webRequest.error}";
+			}
+			return string.Empty;
+		}
+	}
+}
\ No newline at end of file
diff --git a/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebFileRequester.cs.meta b/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebFileRequester.cs.meta
new file mode 100644
index 0000000..7e74c68
--- /dev/null
+++ b/Assets/YooAsset/Runtime/PatchSystem/Download/UnityWebFileRequester.cs.meta
@@ -0,0 +1,11 @@
+fileFormatVersion: 2
+guid: 2ab5f2486d06e2642ba7aa9c9623430e
+MonoImporter:
+  externalObjects: {}
+  serializedVersion: 2
+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: 
diff --git a/Assets/YooAsset/Runtime/PatchSystem/Operations/InitializationOperation.cs b/Assets/YooAsset/Runtime/PatchSystem/Operations/InitializationOperation.cs
index e960567..a796b40 100644
--- a/Assets/YooAsset/Runtime/PatchSystem/Operations/InitializationOperation.cs
+++ b/Assets/YooAsset/Runtime/PatchSystem/Operations/InitializationOperation.cs
@@ -41,7 +41,7 @@ namespace YooAsset
 
 		private OfflinePlayModeImpl _impl;
 		private ESteps _steps = ESteps.None;
-		private UnityWebRequester _downloader;
+		private UnityWebDataRequester _downloader;
 		private string _downloadURL;
 
 		internal OfflinePlayModeInitializationOperation(OfflinePlayModeImpl impl)
@@ -61,7 +61,7 @@ namespace YooAsset
 			{
 				string filePath = PathHelper.MakeStreamingLoadPath(ResourceSettingData.Setting.PatchManifestFileName);
 				_downloadURL = PathHelper.ConvertToWWWPath(filePath);
-				_downloader = new UnityWebRequester();
+				_downloader = new UnityWebDataRequester();
 				_downloader.SendRequest(_downloadURL);
 				_steps = ESteps.CheckAppManifest;
 			}
@@ -106,7 +106,7 @@ namespace YooAsset
 
 		private HostPlayModeImpl _impl;
 		private ESteps _steps = ESteps.None;
-		private UnityWebRequester _downloader;
+		private UnityWebDataRequester _downloader;
 		private string _downloadURL;
 
 		internal HostPlayModeInitializationOperation(HostPlayModeImpl impl)
@@ -151,7 +151,7 @@ namespace YooAsset
 				YooLogger.Log($"Load application patch manifest.");
 				string filePath = PathHelper.MakeStreamingLoadPath(ResourceSettingData.Setting.PatchManifestFileName);
 				_downloadURL = PathHelper.ConvertToWWWPath(filePath);
-				_downloader = new UnityWebRequester();
+				_downloader = new UnityWebDataRequester();
 				_downloader.SendRequest(_downloadURL);
 				_steps = ESteps.CheckAppManifest;
 			}
diff --git a/Assets/YooAsset/Runtime/PatchSystem/Operations/UpdateManifestOperation.cs b/Assets/YooAsset/Runtime/PatchSystem/Operations/UpdateManifestOperation.cs
index c18e212..f3e846d 100644
--- a/Assets/YooAsset/Runtime/PatchSystem/Operations/UpdateManifestOperation.cs
+++ b/Assets/YooAsset/Runtime/PatchSystem/Operations/UpdateManifestOperation.cs
@@ -64,8 +64,8 @@ namespace YooAsset
 		private readonly int _updateResourceVersion;
 		private readonly int _timeout;
 		private ESteps _steps = ESteps.None;
-		private UnityWebRequester _downloaderHash;
-		private UnityWebRequester _downloaderManifest;
+		private UnityWebDataRequester _downloaderHash;
+		private UnityWebDataRequester _downloaderManifest;
 		private float _verifyTime;
 
 		public HostPlayModeUpdateManifestOperation(HostPlayModeImpl impl, int updateResourceVersion, int timeout)
@@ -97,7 +97,7 @@ namespace YooAsset
 			{
 				string webURL = GetPatchManifestRequestURL(_updateResourceVersion, ResourceSettingData.Setting.PatchManifestHashFileName);
 				YooLogger.Log($"Beginning to request patch manifest hash : {webURL}");
-				_downloaderHash = new UnityWebRequester();
+				_downloaderHash = new UnityWebDataRequester();
 				_downloaderHash.SendRequest(webURL, _timeout);
 				_steps = ESteps.CheckWebManifestHash;
 			}
@@ -139,7 +139,7 @@ namespace YooAsset
 			{
 				string webURL = GetPatchManifestRequestURL(_updateResourceVersion, ResourceSettingData.Setting.PatchManifestFileName);
 				YooLogger.Log($"Beginning to request patch manifest : {webURL}");
-				_downloaderManifest = new UnityWebRequester();
+				_downloaderManifest = new UnityWebDataRequester();
 				_downloaderManifest.SendRequest(webURL, _timeout);
 				_steps = ESteps.CheckWebManifest;
 			}