diff --git a/README.md b/README.md
index 550d939f..ec11637f 100644
--- a/README.md
+++ b/README.md
@@ -4,8 +4,8 @@
 
 # 获取
 
-**最新发行版: v5.2.0.**\
-**[更新日志](https://github.com/MaxLHy0424/CRCSN/releases/tag/v5.2.0) | [直链下载](https://github.com/MaxLHy0424/CRCSN/releases/download/v5.2.0/CRCSN-v5.2.0-Stable.7z)**
+**最新发行版: v5.2.1.**\
+**[更新日志](https://github.com/MaxLHy0424/CRCSN/releases/tag/v5.2.1) | [直链下载](https://github.com/MaxLHy0424/CRCSN/releases/download/v5.2.1/CRCSN-v5.2.1-Stable.7z)**
 
 或者:
 
@@ -17,7 +17,7 @@
 **由于 CRCSN 存在敏感操作, 使用时建议关闭防病毒软件. 若 CRCSN 被报为恶意软件, 请添加排除项.**
 
 > [!NOTE]
-> 适用于 v5.2.0.
+> 适用于 v5.2.1.
 
 ## 1 启动
 
diff --git a/info.rc b/info.rc
index 4a7d3fdb..a1c28694 100644
--- a/info.rc
+++ b/info.rc
@@ -1,6 +1,6 @@
 1 VERSIONINFO
-PRODUCTVERSION 5,2,0
-FILEVERSION 5,2,0
+PRODUCTVERSION 5,2,1
+FILEVERSION 5,2,1
 BEGIN
     BLOCK "StringFileInfo"
     BEGIN
@@ -8,11 +8,11 @@ BEGIN
         BEGIN
 			VALUE "CompanyName","MaxLHy0424"
 			VALUE "FileDescription","CRCSN"
-			VALUE "FileVersion","v5.2.0"
+			VALUE "FileVersion","v5.2.1"
 			VALUE "InternalName","CRCSN"
 			VALUE "LegalCopyright","(C) 2023 MaxLHy0424, All Rights Reserved."
 			VALUE "ProductName","Computer Room Control Software Nemesis"
-			VALUE "ProductVersion","v5.2.0"
+			VALUE "ProductVersion","v5.2.1"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/launcher.cmd b/launcher.cmd
index 4af29f75..7f935b7e 100644
--- a/launcher.cmd
+++ b/launcher.cmd
@@ -1,7 +1,7 @@
 @echo off
 chcp 65001 > nul
 set AUTO_LAUNCH=0
-set CHANNEL=2
+set CHANNEL=0
 set CUSTOM_TITLE=[<CUSTOM>] CRCSN Launcher
 if %CHANNEL%==0 (
   title CRCSN Launcher
@@ -19,10 +19,10 @@ set argv=
 cd /d "%~dp0"
 %1
 echo                  CRCSN Launcher
-echo                      v5.2.0
+echo                      v2.2.1
 echo     (C) 2023 MaxLHy0424, All Rights Reserved.
 echo.
-echo (i) CRCSN: v5.2.0, %arch%, %runtime%.
+echo (i) CRCSN: v5.2.1, %arch%, %runtime%.
 if %AUTO_LAUNCH%==0 (
   echo.
   echo 按任意键启动 CRCSN...
diff --git a/src/def.hpp b/src/def.hpp
index 59e47433..4abbbcdb 100644
--- a/src/def.hpp
+++ b/src/def.hpp
@@ -12,5 +12,5 @@ typedef const i8 * cstr;
 typedef short i16;
 typedef unsigned short u16;
 typedef int i32;
-#define CHANNEL 2
+#define CHANNEL 0
 #define CUSTOM_TITLE L"[<CUSTOM>] CRCSN"
\ No newline at end of file
diff --git a/src/main.cpp b/src/main.cpp
index 79880b95..86cc7801 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -43,7 +43,7 @@ auto main(i32 argc,cstr argv[])->i32{
         std::thread{Mod::frontShow}.detach();
     }
     ui.push("    [ Computer Room Control Software Nemesis ]");
-    ui.push("                     v5.2.0");
+    ui.push("                     v2.2.1");
     ui.push("       https://github.com/MaxLHy0424/CRCSN");
     ui.push("     (C) 2023 MaxLHy0424, All Rights Reserved.\n");
     if(optErr){