diff --git a/README.md b/README.md
index 4d93ca41..bed787dc 100644
--- a/README.md
+++ b/README.md
@@ -1,5 +1,5 @@
 # Aria
-![图标](https://github.com/AriaLyy/DownloadUtil/blob/v_3.0/app/src/main/res/mipmap-hdpi/ic_launcher.png)</br>
+![图标](https://github.com/AriaLyy/DownloadUtil/blob/master/img/ic_launcher.png)</br>
 ## [ENGLISH DOC](https://github.com/AriaLyy/Aria/blob/master/ENGLISH_README.md)</br>
 ## [中文文档](https://aria.laoyuyu.me/aria_doc)
 Aria项目源于工作中遇到的一个文件下载管理的需求，当时被下载折磨的痛不欲生，从那时起便萌生了编写一个简单易用，稳当高效的下载框架，aria经历了1.0到3.0的开发，算是越来越接近当初所制定的目标了。
diff --git a/app/src/main/assets/aria_config.xml b/app/src/main/assets/aria_config.xml
index e4ea2d42..cb8d1c24 100644
--- a/app/src/main/assets/aria_config.xml
+++ b/app/src/main/assets/aria_config.xml
@@ -32,7 +32,7 @@
         3、只对新的多线程下载任务有效
         4、只对多线程的任务有效
     -->
-    <useBlock value="false"/>
+    <useBlock value="true"/>
 
     <!--设置下载线程数，下载线程数不能小于1
       注意：
diff --git a/img/ic_launcher.png b/img/ic_launcher.png
new file mode 100644
index 00000000..6bce7f44
Binary files /dev/null and b/img/ic_launcher.png differ