diff --git a/SMBSync2/src/main/assets/SMBSync2_Change_EN.html b/SMBSync2/src/main/assets/SMBSync2_Change_EN.html
index aceb2d8e..359b985c 100644
--- a/SMBSync2/src/main/assets/SMBSync2_Change_EN.html
+++ b/SMBSync2/src/main/assets/SMBSync2_Change_EN.html
@@ -3,7 +3,13 @@
 <head>
 <meta charset='UTF-8'><meta name='viewport' content='width=device-width initial-scale=1'>
 <title>SMBSync2_Change_EN</title></head>
-<body><h4>2021-02-22 Ver2.49</h4>
+<body><h4>2021-03-01 Ver2.50</h4>
+<ul>
+<li>Improved Chinese (zh)</li>
+<li>Resolved a bug that left a notification message when rebooting</li>
+
+</ul>
+<h4>2021-02-22 Ver2.49</h4>
 <ul>
 <li>Fixed bug that file size filter warning message is always displayed when app is launched.</li>
 <li>Fixed the bug that notification messages remain.</li>
diff --git a/SMBSync2/src/main/assets/SMBSync2_Change_JA.html b/SMBSync2/src/main/assets/SMBSync2_Change_JA.html
index c56a7ce4..c23aafb5 100644
--- a/SMBSync2/src/main/assets/SMBSync2_Change_JA.html
+++ b/SMBSync2/src/main/assets/SMBSync2_Change_JA.html
@@ -3,7 +3,13 @@
 <head>
 <meta charset='UTF-8'><meta name='viewport' content='width=device-width initial-scale=1'>
 <title>SMBSync2_Change_JA</title></head>
-<body><h4>2021-02-22 Ver2.49</h4>
+<body><h4>2021-03-01 Ver2.50</h4>
+<ul>
+<li>中国語(zh)の改善</li>
+<li>再起動時の通知メッセージが残るバグを解決</li>
+
+</ul>
+<h4>2021-02-22 Ver2.49</h4>
 <ul>
 <li>アプリ起動時にファイルサイズフィルターの警告メッセージが常に表示されるバグを解決</li>
 <li>通知メッセージが残るバグを解決</li>
diff --git a/help/SMBSync2_Change_EN.pdf b/help/SMBSync2_Change_EN.pdf
index 46cd2df1..4ad77e9b 100644
Binary files a/help/SMBSync2_Change_EN.pdf and b/help/SMBSync2_Change_EN.pdf differ
diff --git a/help/SMBSync2_Change_JA.pdf b/help/SMBSync2_Change_JA.pdf
index 9b02954f..73c85803 100644
Binary files a/help/SMBSync2_Change_JA.pdf and b/help/SMBSync2_Change_JA.pdf differ
