diff --git a/README.md b/README.md
index e2c27d8..5c2a5fc 100644
--- a/README.md
+++ b/README.md
@@ -20,7 +20,7 @@ source 'https://github.com/CocoaPods/Specs.git'
 platform :ios, '8.0'
 
 target 'TargetName' do
-    pod 'YCDownloadSession', '~> 1.2.4'
+    pod 'YCDownloadSession', '~> 1.2.5'
 end
 ```
 
@@ -30,6 +30,11 @@ end
 $ pod install
 ```
 
+提示错误 `[!] Unable to find a specification for YCDownloadSession ` 解决办法：
+
+```
+$ pod setup
+```
 
 ## 用法
 
diff --git a/YCDownloadSession.podspec b/YCDownloadSession.podspec
index 038e52e..ad8035b 100644
--- a/YCDownloadSession.podspec
+++ b/YCDownloadSession.podspec
@@ -8,7 +8,7 @@
 
 Pod::Spec.new do |s|
   s.name         = "YCDownloadSession"
-  s.version      = "1.2.4"
+  s.version      = "1.2.5"
   s.summary      = "iOS background download video or file"
   s.description  = <<-DESC
                     iOS background download video or file lib
diff --git a/YCDownloadSession.xcodeproj/project.pbxproj b/YCDownloadSession.xcodeproj/project.pbxproj
index d4d74f4..444c0e2 100644
--- a/YCDownloadSession.xcodeproj/project.pbxproj
+++ b/YCDownloadSession.xcodeproj/project.pbxproj
@@ -498,7 +498,7 @@
 					};
 					D72C84CF1E77D42500EDCEEF = {
 						CreatedOnToolsVersion = 8.2.1;
-						DevelopmentTeam = 6QXR4W42GG;
+						DevelopmentTeam = NRL3SRQ267;
 						ProvisioningStyle = Automatic;
 						SystemCapabilities = {
 							com.apple.BackgroundModes = {
@@ -787,7 +787,7 @@
 		D72C84E81E77D42500EDCEEF /* Debug */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				DEVELOPMENT_TEAM = 6QXR4W42GG;
+				DEVELOPMENT_TEAM = NRL3SRQ267;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/YCDownloadSession/ThirdLib/Bugly",
@@ -803,7 +803,7 @@
 		D72C84E91E77D42500EDCEEF /* Release */ = {
 			isa = XCBuildConfiguration;
 			buildSettings = {
-				DEVELOPMENT_TEAM = 6QXR4W42GG;
+				DEVELOPMENT_TEAM = NRL3SRQ267;
 				FRAMEWORK_SEARCH_PATHS = (
 					"$(inherited)",
 					"$(PROJECT_DIR)/YCDownloadSession/ThirdLib/Bugly",
diff --git a/YCDownloadSession/Info.plist b/YCDownloadSession/Info.plist
index 6610531..9cc7ec3 100644
--- a/YCDownloadSession/Info.plist
+++ b/YCDownloadSession/Info.plist
@@ -21,7 +21,7 @@
 	<key>CFBundlePackageType</key>
 	<string>APPL</string>
 	<key>CFBundleShortVersionString</key>
-	<string>1.2.3</string>
+	<string>1.2.5</string>
 	<key>CFBundleVersion</key>
 	<string>2</string>
 	<key>LSRequiresIPhoneOS</key>
diff --git a/YCDownloadSession/YCDownloadSession/YCDownloadSession.m b/YCDownloadSession/YCDownloadSession/YCDownloadSession.m
index 3ce37a6..b5f473b 100644
--- a/YCDownloadSession/YCDownloadSession/YCDownloadSession.m
+++ b/YCDownloadSession/YCDownloadSession/YCDownloadSession.m
@@ -44,7 +44,6 @@ + (instancetype)downloadSession {
     return _instance;
 }
 
-
 - (instancetype)init {
     if (self = [super init]) {
         NSLog(@"YCDownloadSession init");
@@ -54,15 +53,18 @@ - (instancetype)init {
         _downloadVersion = @"1.2.3";
         [self initDownloadData];
         //获取背景session正在运行的(app重启，或者闪退会有任务)
-        NSMutableDictionary *dictM = [self.session valueForKey:@"tasks"];
-        [dictM enumerateKeysAndObjectsUsingBlock:^(id  _Nonnull key, NSURLSessionDownloadTask *obj, BOOL * _Nonnull stop) {
-            YCDownloadTask *task = [self getDownloadTaskWithUrl:[YCDownloadTask getURLFromTask:obj]];
-            if(!task){
-                [obj cancel];
-            }else{
-                task.downloadTask = obj;
-            }
-        }];
+        dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(2 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{
+            NSMutableDictionary *dictM = [self.session valueForKey:@"tasks"];
+            [dictM enumerateKeysAndObjectsUsingBlock:^(id  _Nonnull key, NSURLSessionDownloadTask *obj, BOOL * _Nonnull stop) {
+                YCDownloadTask *task = [self getDownloadTaskWithUrl:[YCDownloadTask getURLFromTask:obj]];
+                if(!task){
+                    NSLog(@"[Error] not found task for url: %@", [YCDownloadTask getURLFromTask:obj]);
+                    [obj cancel];
+                }else{
+                    task.downloadTask = obj;
+                }
+            }];
+        });
         
         [self addNotification];
 //        if (dictM.count>0) {
@@ -330,11 +332,15 @@ - (void)setSaveRootPath:(SetSaveRootPathBlk)srpBlk{
 }
 #pragma mark - private
 
+- (NSURLSessionDownloadTask *)downloadTaskWithUrl:(NSString *)url {
+    NSURL *downloadURL = [NSURL URLWithString:url];
+    NSURLRequest *request = [NSURLRequest requestWithURL:downloadURL];
+    return [self.session downloadTaskWithRequest:request];
+}
+
 - (YCDownloadTask *)startNewTaskWithUrl:(NSString *)downloadURLString fileId:(NSString *)fileId delegate:(id<YCDownloadTaskDelegate>)delegate{
     
-    NSURL *downloadURL = [NSURL URLWithString:downloadURLString];
-    NSURLRequest *request = [NSURLRequest requestWithURL:downloadURL];
-    NSURLSessionDownloadTask *downloadTask = [self.session downloadTaskWithRequest:request];
+    NSURLSessionDownloadTask *downloadTask = [self downloadTaskWithUrl:downloadURLString];
     YCDownloadTask *task = [self createDownloadTaskItemWithUrl:downloadURLString fileId:fileId delegate:delegate];
     task.downloadTask = downloadTask;
     [downloadTask resume];
@@ -399,10 +405,9 @@ - (void)resumeDownloadTask:(YCDownloadTask *)task {
         
         if (!task.downloadTask || task.downloadTask.state == NSURLSessionTaskStateCompleted || task.downloadTask.state == NSURLSessionTaskStateCanceling) {
             [task.downloadTask cancel];
-            NSURL *downloadURL = [NSURL URLWithString:task.downloadURL];
-            NSURLRequest *request = [NSURLRequest requestWithURL:downloadURL];
-            NSURLSessionDownloadTask *downloadTask = [self.session downloadTaskWithRequest:request];
+            NSURLSessionDownloadTask *downloadTask = [self downloadTaskWithUrl:task.downloadURL];
             task.downloadTask = downloadTask;
+            [downloadTask resume];
         }
         [task.downloadTask resume];
         [self downloadStatusChanged:YCDownloadStatusDownloading task:task];