diff --git a/installer/AppShell.xaml b/installer/AppShell.xaml
index cecf050f..224bae85 100755
--- a/installer/AppShell.xaml
+++ b/installer/AppShell.xaml
@@ -16,9 +16,9 @@
         <ShellContent
             Title="Launch"
             ContentTemplate="{DataTemplate local:LaunchPage}"/>
-        <ShellContent
+        <!--<ShellContent
             Title="Login"
-            ContentTemplate="{DataTemplate local:LoginPage}"/>
+            ContentTemplate="{DataTemplate local:LoginPage}"/>-->
         <ShellContent
             Title="Help"
             ContentTemplate="{DataTemplate local:HelpPage}"/>
diff --git a/installer/Page/HelpPage.xaml b/installer/Page/HelpPage.xaml
index b4b16294..cee5bcc0 100644
--- a/installer/Page/HelpPage.xaml
+++ b/installer/Page/HelpPage.xaml
@@ -5,103 +5,103 @@
              x:Class="installer.Page.HelpPage"
              Title="Help">
 
-    <VerticalStackLayout
-        WidthRequest="600"
+    <ScrollView
+        WidthRequest="750"
+        HeightRequest="500"
         HorizontalOptions="Center">
+        <VerticalStackLayout>
+            
+            <Label
+                Text="Installer"
+                FontAttributes="Bold"
+                FontSize="24"/>
+            <Frame
+                BorderColor="Gray"
+                Padding="10"
+                Margin="5"
+                VerticalOptions="FillAndExpand"
+                WidthRequest="700">
+                <CollectionView
+                    ItemsSource="{Binding InstallerHelp}">
+                    <CollectionView.ItemTemplate>
+                        <DataTemplate>
+                            <VerticalStackLayout>
+                                <Label 
+                                    Text="{Binding Title}"
+                                    FontSize="{Binding TitleSize}" />
+                                <Label
+                                    Text="{Binding Content}"
+                                    FontSize="{Binding ContentSize}"/>
+                            </VerticalStackLayout>
+                        </DataTemplate>
+                    </CollectionView.ItemTemplate>
+                </CollectionView>
+            </Frame>
 
-        <Label/>
-        <Label/>
+            <Label
+                Text="Launcher"
+                FontAttributes="Bold"
+                FontSize="24"/>
+            <Frame
+                BorderColor="Gray"
+                Padding="10"
+                Margin="5"
+                VerticalOptions="FillAndExpand"
+                WidthRequest="700">
+                <CollectionView
+                    ItemsSource="{Binding LauncherHelp}">
+                    <CollectionView.ItemTemplate>
+                        <DataTemplate>
+                            <VerticalStackLayout>
+                                <Label 
+                                    Text="{Binding Title}"
+                                    FontSize="{Binding TitleSize}" />
+                                <Label
+                                    Text="{Binding Content}"
+                                    FontSize="{Binding ContentSize}"/>
+                            </VerticalStackLayout>
+                        </DataTemplate>
+                    </CollectionView.ItemTemplate>
+                </CollectionView>
+            </Frame>
 
-        <Label
-            Text="Installer"
-            FontAttributes="Bold"
-            FontSize="24"/>
-        <Frame
-            BorderColor="Gray"
-            Padding="10"
-            Margin="5"
-            VerticalOptions="FillAndExpand"
-            WidthRequest="600">
-            <CollectionView
-                ItemsSource="{Binding InstallerHelp}">
-                <CollectionView.ItemTemplate>
-                    <DataTemplate>
-                        <VerticalStackLayout>
-                            <Label 
-                                Text="{Binding Title}"
-                                FontSize="{Binding TitleSize}" />
-                            <Label
-                                Text="{Binding Content}"
-                                FontSize="{Binding ContentSize}"/>
-                        </VerticalStackLayout>
-                    </DataTemplate>
-                </CollectionView.ItemTemplate>
-            </CollectionView>
-        </Frame>
+            <Label
+                Text="Other"
+                FontAttributes="Bold"
+                FontSize="24"/>
+            <Frame
+                BorderColor="Gray"
+                Padding="10"
+                Margin="5"
+                VerticalOptions="FillAndExpand"
+                WidthRequest="700">
+                <CollectionView
+                    ItemsSource="{Binding OtherHelp}">
+                    <CollectionView.ItemTemplate>
+                        <DataTemplate>
+                            <VerticalStackLayout>
+                                <Label 
+                                    Text="{Binding Title}"
+                                    FontSize="{Binding TitleSize}" />
+                                <Label
+                                    Text="{Binding Content}"
+                                    FontSize="{Binding ContentSize}"/>
+                            </VerticalStackLayout>
+                        </DataTemplate>
+                    </CollectionView.ItemTemplate>
+                </CollectionView>
+            </Frame>
 
-        <Label
-            Text="Launcher"
-            FontAttributes="Bold"
-            FontSize="24"/>
-        <Frame
-            BorderColor="Gray"
-            Padding="10"
-            Margin="5"
-            VerticalOptions="FillAndExpand"
-            WidthRequest="600">
-            <CollectionView
-                ItemsSource="{Binding LauncherHelp}">
-                <CollectionView.ItemTemplate>
-                    <DataTemplate>
-                        <VerticalStackLayout>
-                            <Label 
-                                Text="{Binding Title}"
-                                FontSize="{Binding TitleSize}" />
-                            <Label
-                                Text="{Binding Content}"
-                                FontSize="{Binding ContentSize}"/>
-                        </VerticalStackLayout>
-                    </DataTemplate>
-                </CollectionView.ItemTemplate>
-            </CollectionView>
-        </Frame>
+            <Label/>
+            <Label/>
 
-        <Label
-            Text="Other"
-            FontAttributes="Bold"
-            FontSize="24"/>
-        <Frame
-            BorderColor="Gray"
-            Padding="10"
-            Margin="5"
-            VerticalOptions="FillAndExpand"
-            WidthRequest="600">
-            <CollectionView
-                ItemsSource="{Binding OtherHelp}">
-                <CollectionView.ItemTemplate>
-                    <DataTemplate>
-                        <VerticalStackLayout>
-                            <Label 
-                                Text="{Binding Title}"
-                                FontSize="{Binding TitleSize}" />
-                            <Label
-                                Text="{Binding Content}"
-                                FontSize="{Binding ContentSize}"/>
-                        </VerticalStackLayout>
-                    </DataTemplate>
-                </CollectionView.ItemTemplate>
-            </CollectionView>
-        </Frame>
-
-        <Label/>
-        <Label/>
-        
-        <Label
-            Text="祝大家 Debug 快乐！"
-            FontAttributes="Bold"
-            FontSize="22"
-            HorizontalOptions="Center"/>
-
-    </VerticalStackLayout>
+            <Label
+                Text="祝大家 Debug 快乐！"
+                FontAttributes="Bold"
+                FontSize="22"
+                HorizontalOptions="Center"/>
 
+        </VerticalStackLayout>
+    </ScrollView>
+    
 </ContentPage>
\ No newline at end of file
diff --git a/installer/ViewModel/HelpViewModel.cs b/installer/ViewModel/HelpViewModel.cs
index fc54d582..fbab8808 100644
--- a/installer/ViewModel/HelpViewModel.cs
+++ b/installer/ViewModel/HelpViewModel.cs
@@ -24,7 +24,7 @@ public HelpViewModel()
                 new HelpMessage
                 {
                     Title = "选择安装路径",
-                    Content = "> 下载功能需要选择空文件夹路径，否则该路径下所有文件将丢失。"
+                    Content = "> 下载功能需要选择空文件夹路径。"
                 },
                 new HelpMessage
                 {
@@ -35,11 +35,6 @@ public HelpViewModel()
                 {
                     Title = "更新",
                     Content = "> 更新前请先进行检查更新操作。"
-                },
-                new HelpMessage
-                {
-                    Title = "按钮全部不可用",
-                    Content = "> 如果选择的文件夹之前曾经下载过THUAI7，那么请在“文档-THUAI7-config.json”中添加项“\"Installed\": true”"
                 }
                 });
 
@@ -85,7 +80,7 @@ public HelpMessage(string? t = null, string? c = null)
         }
         public string? Title { get; set; }
         public string? Content { get; set; }
-        public string TitleSize { get; } = "20";
+        public string TitleSize { get; } = "18";
         public string ContentSize { get; } = "16";
     }
 }
diff --git a/installer/ViewModel/InstallViewModel.cs b/installer/ViewModel/InstallViewModel.cs
index 1fe7b09f..bb5564f7 100644
--- a/installer/ViewModel/InstallViewModel.cs
+++ b/installer/ViewModel/InstallViewModel.cs
@@ -236,6 +236,7 @@ private void BrowseBtnClicked()
                 else
                 {
                     DownloadEnabled = true;
+                    CheckEnabled = true;
                 }
                 BrowseEnabled = true;
             });
diff --git a/installer/ViewModel/LaunchViewModel.cs b/installer/ViewModel/LaunchViewModel.cs
index e6aa53a4..6fa70aea 100644
--- a/installer/ViewModel/LaunchViewModel.cs
+++ b/installer/ViewModel/LaunchViewModel.cs
@@ -72,7 +72,6 @@ public string? Mode
             set
             {
                 mode = value;
-                OnPropertyChanged();
                 if (mode == "Playback")
                 {
                     playbackFileChanged = true;
@@ -96,6 +95,7 @@ public string? Mode
                     PlaybackVisible = false;
                     DebugVisible = false;
                 }
+                OnPropertyChanged();
             }
         }
 
@@ -483,7 +483,7 @@ private void Start()
                                 var py = Process.Start(new ProcessStartInfo()
                                 {
                                     FileName = "cmd.exe",
-                                    Arguments = "/c python"
+                                    Arguments = "/c python "
                                         + Path.Combine(Downloader.Data.Config.InstallPath, "CAPI", "python", "PyAPI", "main.py")
                                         + $" -I {IP} -P {Port} -t {teamID} -p {playerID} -o"
                                 });