diff --git a/commit.ref b/commit.ref
index 93c7ab7..44cd306 160000
--- a/commit.ref
+++ b/commit.ref
@@ -1 +1 @@
-Subproject commit 93c7ab71ffa25680196fdfa00b032cd7617af415
+Subproject commit 44cd306a95d4cd281d72aefacac28906ac6059a6
diff --git a/commit.yml b/commit.yml
index 8fe98b4..e267a60 100644
--- a/commit.yml
+++ b/commit.yml
@@ -3,33 +3,18 @@ branches: {
   }
 fileChange:
   /Demo:
-    newFile: !uuid 'b4bb881b8bc34e7ac057d1371048aba495f31fdf'
-    oldFile: !uuid '1651e477220828b0202ccdd58fcf92a92b6b771f'
+    newFile: !uuid 'e22cfe74a69e5db220b90f7e1d4170430352e511'
+    oldFile: !uuid 'b4bb881b8bc34e7ac057d1371048aba495f31fdf'
   /Demo/AT-Command:
-    newFile: !uuid '4214783d085bb1255662d0d9ee3477a2f53d036c'
-    oldFile: !uuid 'f2b7b28770089348c558028b16ab2b4a45210c52'
+    newFile: !uuid '3896aebbbe290b42399e70b91d8d29ed55db7d1b'
+    oldFile: !uuid '4214783d085bb1255662d0d9ee3477a2f53d036c'
   /Demo/AT-Command/at_chat.c:
-    newFile: !uuid 'f49990476fd6feb35f866821b8a70342839c49d3'
-    oldFile: !uuid '532217436cb50c6e03b0a92d65067254c42ea026'
-  /Demo/AT-Command/at_chat.h:
-    newFile: !uuid '39426e71684aa1045800e7b38e25188f826de7d2'
-    oldFile: !uuid '0f6e397a122f4f641200ad30daabeca56a2fa744'
-  /Demo/user:
-    newFile: !uuid '5c786f7fd8774055129e968c8add1b9000d9e8a7'
-    oldFile: !uuid 'e74941900ee7de73d6c749e9d014b910837d8c26'
-  /Demo/user/task:
-    newFile: !uuid '8e96a09a5cd54efe87bc304508be936926c96a1b'
-    oldFile: !uuid '2274b11119c73a0ebe2bfd2ccb1b02b43451e08a'
-  /Demo/user/task/wifi_task.c:
-    newFile: !uuid '871c45a3d6f282852481aed41d7d5fed8fd51721'
-    oldFile: !uuid 'd60813453a45134592dbe83d1b029b1703ab5fa1'
+    newFile: !uuid '52983d401873aae5210260a8401c7b8060a23e1b'
+    oldFile: !uuid 'f49990476fd6feb35f866821b8a70342839c49d3'
   /at_chat.c:
-    newFile: !uuid 'f49990476fd6feb35f866821b8a70342839c49d3'
-    oldFile: !uuid '532217436cb50c6e03b0a92d65067254c42ea026'
-  /at_chat.h:
-    newFile: !uuid '39426e71684aa1045800e7b38e25188f826de7d2'
-    oldFile: !uuid '0f6e397a122f4f641200ad30daabeca56a2fa744'
-gitCommitId: !uuid '93c7ab71ffa25680196fdfa00b032cd7617af415'
+    newFile: !uuid '52983d401873aae5210260a8401c7b8060a23e1b'
+    oldFile: !uuid 'f49990476fd6feb35f866821b8a70342839c49d3'
+gitCommitId: !uuid '44cd306a95d4cd281d72aefacac28906ac6059a6'
 renames: {
   }
-revisionId: 15
+revisionId: 16