diff --git a/wp/changelog.txt b/wp/changelog.txt
index 6513fb71..47ca2f6d 100755
--- a/wp/changelog.txt
+++ b/wp/changelog.txt
@@ -1,3 +1,6 @@
+# 1.2.4 发布日期：2014-03-03
+* 修改上传大文件出现的片段错位的问题。
+
 # 1.2.3 发布日期：2014-11-26
 * 修改算法，代码重构。
 * 修复统计 WP SDK 发出请求不准确的bug。 
diff --git a/wp/release-v1.2.4/AVOSCloud.Phone-v1.2.4.dll b/wp/release-v1.2.4/AVOSCloud.Phone-v1.2.4.dll
new file mode 100644
index 00000000..61e2c72b
Binary files /dev/null and b/wp/release-v1.2.4/AVOSCloud.Phone-v1.2.4.dll differ