diff --git a/Download.cs b/Download.cs
index 4c6881f..06af21d 100644
--- a/Download.cs
+++ b/Download.cs
@@ -8,7 +8,7 @@ public partial class Download : Form
     {
         private string set_download = "";
         private string set_folder = "";
-        private DownloadService dl;
+        private DownloadService? dl = null;
 
         public Download(string url_download = "", string folder_download = "")
         {
@@ -56,7 +56,7 @@ private void btDownload_Click(object sender, EventArgs e)
                 }
                 catch (Exception ek)
                 {
-                    MessageBox.Show($"Failed downloading Data", "Oh Snap!", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
+                    MessageBox.Show($"Failed downloading Data: "+ek.Message, "Oh Snap!", MessageBoxButtons.OK, MessageBoxIcon.Asterisk);
                 }
             }
             else
diff --git a/Main.Designer.cs b/Main.Designer.cs
index 54a1c23..a6a590f 100644
--- a/Main.Designer.cs
+++ b/Main.Designer.cs
@@ -30,7 +30,7 @@ private void InitializeComponent()
         {
             components = new System.ComponentModel.Container();
             ListViewItem listViewItem1 = new ListViewItem(new string[] { "Yuuki", "tes.yuuki.me", "N/A", "N/A", "N/A" }, -1);
-            btStart = new Button();
+            btStartNormal = new Button();
             GetServerHost = new TextBox();
             label2 = new Label();
             GetProxyPort = new TextBox();
@@ -41,6 +41,7 @@ private void InitializeComponent()
             Set_LA_GameFolder = new TextBox();
             label5 = new Label();
             groupBox8 = new GroupBox();
+            btStartYuukiServer = new Button();
             GetTypeGame = new ComboBox();
             btStartOfficialServer = new Button();
             grProfile = new GroupBox();
@@ -162,23 +163,23 @@ private void InitializeComponent()
             tabPage7.SuspendLayout();
             SuspendLayout();
             // 
-            // btStart
+            // btStartNormal
             // 
-            btStart.Font = new Font("Segoe UI", 18F, FontStyle.Regular, GraphicsUnit.Point);
-            btStart.Location = new Point(6, 61);
-            btStart.Name = "btStart";
-            btStart.Size = new Size(105, 38);
-            btStart.TabIndex = 0;
-            btStart.Text = "Launch";
-            btStart.UseVisualStyleBackColor = true;
-            btStart.Click += btStart_Click;
+            btStartNormal.Font = new Font("Segoe UI", 18F, FontStyle.Regular, GraphicsUnit.Point);
+            btStartNormal.Location = new Point(6, 61);
+            btStartNormal.Name = "btStartNormal";
+            btStartNormal.Size = new Size(105, 38);
+            btStartNormal.TabIndex = 0;
+            btStartNormal.Text = "Launch";
+            btStartNormal.UseVisualStyleBackColor = true;
+            btStartNormal.Click += btStartNormal_Click;
             // 
             // GetServerHost
             // 
             GetServerHost.Font = new Font("Segoe UI", 15.75F, FontStyle.Regular, GraphicsUnit.Point);
             GetServerHost.Location = new Point(6, 20);
             GetServerHost.Name = "GetServerHost";
-            GetServerHost.Size = new Size(253, 35);
+            GetServerHost.Size = new Size(232, 35);
             GetServerHost.TabIndex = 2;
             // 
             // label2
@@ -236,7 +237,7 @@ private void InitializeComponent()
             grConfigGameLite.Controls.Add(Set_LA_GameFolder);
             grConfigGameLite.Controls.Add(label5);
             grConfigGameLite.Font = new Font("Segoe UI", 12F, FontStyle.Regular, GraphicsUnit.Point);
-            grConfigGameLite.Location = new Point(8, 126);
+            grConfigGameLite.Location = new Point(8, 111);
             grConfigGameLite.Name = "grConfigGameLite";
             grConfigGameLite.Size = new Size(420, 59);
             grConfigGameLite.TabIndex = 19;
@@ -273,36 +274,48 @@ private void InitializeComponent()
             // 
             // groupBox8
             // 
+            groupBox8.Controls.Add(btStartYuukiServer);
             groupBox8.Controls.Add(GetServerHost);
-            groupBox8.Controls.Add(btStart);
+            groupBox8.Controls.Add(btStartNormal);
             groupBox8.Controls.Add(GetTypeGame);
             groupBox8.Controls.Add(btStartOfficialServer);
             groupBox8.Font = new Font("Segoe UI", 12F, FontStyle.Regular, GraphicsUnit.Point);
             groupBox8.Location = new Point(8, 6);
             groupBox8.Name = "groupBox8";
-            groupBox8.Size = new Size(420, 114);
+            groupBox8.Size = new Size(420, 106);
             groupBox8.TabIndex = 18;
             groupBox8.TabStop = false;
             groupBox8.Text = "Connect to server";
             // 
+            // btStartYuukiServer
+            // 
+            btStartYuukiServer.Font = new Font("Segoe UI", 14.25F, FontStyle.Regular, GraphicsUnit.Point);
+            btStartYuukiServer.Location = new Point(326, 20);
+            btStartYuukiServer.Name = "btStartYuukiServer";
+            btStartYuukiServer.Size = new Size(91, 35);
+            btStartYuukiServer.TabIndex = 20;
+            btStartYuukiServer.Text = "YuukiPS";
+            btStartYuukiServer.UseVisualStyleBackColor = true;
+            btStartYuukiServer.Click += btStartYuukiServer_Click;
+            // 
             // GetTypeGame
             // 
             GetTypeGame.Font = new Font("Segoe UI", 15.75F, FontStyle.Regular, GraphicsUnit.Point);
             GetTypeGame.FormattingEnabled = true;
             GetTypeGame.Location = new Point(117, 61);
             GetTypeGame.Name = "GetTypeGame";
-            GetTypeGame.Size = new Size(290, 38);
+            GetTypeGame.Size = new Size(300, 38);
             GetTypeGame.TabIndex = 14;
             GetTypeGame.SelectedIndexChanged += GetTypeGame_SelectedIndexChanged;
             // 
             // btStartOfficialServer
             // 
             btStartOfficialServer.Font = new Font("Segoe UI", 14.25F, FontStyle.Regular, GraphicsUnit.Point);
-            btStartOfficialServer.Location = new Point(265, 20);
+            btStartOfficialServer.Location = new Point(244, 20);
             btStartOfficialServer.Name = "btStartOfficialServer";
-            btStartOfficialServer.Size = new Size(142, 35);
+            btStartOfficialServer.Size = new Size(81, 35);
             btStartOfficialServer.TabIndex = 13;
-            btStartOfficialServer.Text = "Official Server";
+            btStartOfficialServer.Text = "Official";
             btStartOfficialServer.UseVisualStyleBackColor = true;
             btStartOfficialServer.Click += btStartOfficialServer_Click;
             // 
@@ -313,7 +326,7 @@ private void InitializeComponent()
             grProfile.Controls.Add(btsave);
             grProfile.Controls.Add(label8);
             grProfile.Font = new Font("Segoe UI", 12F, FontStyle.Regular, GraphicsUnit.Point);
-            grProfile.Location = new Point(8, 191);
+            grProfile.Location = new Point(6, 176);
             grProfile.Name = "grProfile";
             grProfile.Size = new Size(420, 108);
             grProfile.TabIndex = 17;
@@ -365,9 +378,9 @@ private void InitializeComponent()
             // grExtra
             // 
             grExtra.Controls.Add(Extra_AkebiGC);
-            grExtra.Location = new Point(277, 302);
+            grExtra.Location = new Point(431, 264);
             grExtra.Name = "grExtra";
-            grExtra.Size = new Size(151, 70);
+            grExtra.Size = new Size(217, 52);
             grExtra.TabIndex = 12;
             grExtra.TabStop = false;
             grExtra.Text = "Extra";
@@ -388,9 +401,9 @@ private void InitializeComponent()
             grProxy.Controls.Add(stIsRunProxy);
             grProxy.Controls.Add(CheckProxyEnable);
             grProxy.Controls.Add(label2);
-            grProxy.Location = new Point(8, 305);
+            grProxy.Location = new Point(431, 191);
             grProxy.Name = "grProxy";
-            grProxy.Size = new Size(263, 67);
+            grProxy.Size = new Size(215, 67);
             grProxy.TabIndex = 11;
             grProxy.TabStop = false;
             grProxy.Text = "Proxy";
@@ -1303,7 +1316,7 @@ private void InitializeComponent()
 
         #endregion
 
-        private Button btStart;
+        private Button btStartNormal;
         private TextBox GetServerHost;
         private Label label2;
         private TextBox GetProxyPort;
@@ -1409,5 +1422,6 @@ private void InitializeComponent()
         private Button btload;
         private GroupBox groupBox8;
         private GroupBox grConfigGameLite;
+        private Button btStartYuukiServer;
     }
 }
\ No newline at end of file
diff --git a/Main.cs b/Main.cs
index 955d85c..d990074 100644
--- a/Main.cs
+++ b/Main.cs
@@ -17,7 +17,7 @@ public partial class Main : Form
         private Process? progress;
 
         // Server List
-        Thread thServerList;
+        Thread? thServerList = null;
         List<DataServer> ListServer = new List<DataServer> { new DataServer() };
 
 
@@ -40,17 +40,17 @@ public partial class Main : Form
         Extra.Discord discord = new Extra.Discord();
 
         // Game
-        public Game.Genshin.Settings settings_genshin;
+        public Game.Genshin.Settings? settings_genshin = null;
 
         //KeyGS key;
-        Patch get_version;
+        Patch? get_version = null;
 
         public Main()
         {
             InitializeComponent();
         }
 
-        [Obsolete]
+
         private void Main_Load(object sender, EventArgs e)
         {
             Console.WriteLine("Loading....");
@@ -76,26 +76,26 @@ private void Main_Load(object sender, EventArgs e)
             notbootyet = false;
         }
 
-        private void btload_Click(object sender, EventArgs e)
+        private void btload_Click(object? sender, EventArgs e)
         {
             var get_select_profile = GetProfileServer.Text;
             LoadProfile(get_select_profile);
         }
 
-        private void Set_LA_Save_Click(object sender, EventArgs e)
+        private void Set_LA_Save_Click(object? sender, EventArgs e)
         {
             var get_select_profile = GetProfileServer.Text;
             SaveProfile(get_select_profile);
         }
 
-        private void GetProfileServer_SelectedIndexChanged(object sender, EventArgs e)
+        private void GetProfileServer_SelectedIndexChanged(object? sender, EventArgs e)
         {
             var get_select_profile = GetProfileServer.Text;
             Console.WriteLine("GetProfileServer_SelectedIndexChanged " + get_select_profile);
             LoadProfile(get_select_profile);
         }
 
-        private void GetTypeGame_SelectedIndexChanged(object sender, EventArgs e)
+        private void GetTypeGame_SelectedIndexChanged(object? sender, EventArgs e)
         {
             default_profile.game.type = (GameType)GetTypeGame.SelectedItem;
         }
@@ -221,7 +221,7 @@ public void SaveProfile(string name_save = "Default")
                 }
                 catch (Exception ex)
                 {
-                    Console.WriteLine("Error save config, so reload it");
+                    Console.WriteLine("Error save config (" + ex.Message + "), so reload it");
                     configdata = new Config() { profile = new List<Profile>() { tmp_profile } };
                 }
 
@@ -240,8 +240,6 @@ public void SaveProfile(string name_save = "Default")
             }
         }
 
-
-
         private void btStartOfficialServer_Click(object sender, EventArgs e)
         {
             GetServerHost.Text = "official";
@@ -249,7 +247,14 @@ private void btStartOfficialServer_Click(object sender, EventArgs e)
             DoStart();
         }
 
-        private void btStart_Click(object sender, EventArgs e)
+        private void btStartYuukiServer_Click(object sender, EventArgs e)
+        {
+            GetServerHost.Text = "https://ps.yuuki.me";
+            CheckProxyEnable.Checked = true;
+            DoStart();
+        }
+
+        private void btStartNormal_Click(object sender, EventArgs e)
         {
             DoStart();
         }
@@ -453,11 +458,7 @@ public void DoStart()
                             //open bat
                             //Process.Start(file_update_AkebiGC);
 
-                            ProcessStartInfo pInfo = new ProcessStartInfo();
-                            pInfo.FileName = file_update_AkebiGC;
-                            Process p = Process.Start(pInfo);
-
-                            p.WaitForExit();
+                            Process.Start(new ProcessStartInfo(file_update_AkebiGC))?.WaitForExit();
 
                             // Update MD5
                             File.WriteAllText(get_AkebiGC_md5, version_akebi);
@@ -761,11 +762,11 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
             var use_channel = get_version.channel;
 
             // LOCALHOST            
-            string MD5_UA_API_Original;
-            string MD5_UA_API_Patched;
-            string MD5_Metadata_API_Original;
-            string MD5_Metadata_API_Patched;
-            string MD5_API_Patched;
+            string MD5_UA_API_Original = "";
+            string MD5_UA_API_Patched = "";
+            string MD5_Metadata_API_Original = "";
+            string MD5_Metadata_API_Patched = "";
+            string MD5_API_Patched = "";
 
             var DL_Patch = "";
             if (get_version.patched != null)
@@ -790,34 +791,34 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                 // Select Metode (via API Cloud)
                 if (use_channel == "OS")
                 {
-                    MD5_UA_API_Original = get_version.original.md5_check.os.userassembly.ToUpper();
-                    MD5_UA_API_Patched = get_version.patched.md5_vaild.os.ToUpper();
+                    MD5_UA_API_Original = get_version.original?.md5_check.os.userassembly.ToUpper() ?? string.Empty;
+                    MD5_UA_API_Patched = get_version.patched?.md5_vaild.os.ToUpper() ?? string.Empty;
 
-                    MD5_Metadata_API_Original = get_version.original.md5_check.os.metadata;
-                    MD5_Metadata_API_Patched = get_version.patched.md5_vaild.os.ToUpper();
+                    MD5_Metadata_API_Original = get_version.original?.md5_check.os.metadata ?? string.Empty;
+                    MD5_Metadata_API_Patched = get_version.patched?.md5_vaild.os.ToUpper() ?? string.Empty;
 
-                    key_to_patch = get_version.patched.key_patch;
-                    key_to_find = get_version.original.key_find.os;
+                    key_to_patch = get_version.patched?.key_patch;
+                    key_to_find = get_version.original?.key_find.os;
 
                     Original_file_MA = DL_Original + "GenshinImpact_Data/Managed/Metadata/global-metadata.dat";
                     Original_file_UA = DL_Original + "GenshinImpact_Data/Native/UserAssembly.dll";
-                    MD5_API_Patched = get_version.patched.md5_vaild.os.ToUpper();
+                    MD5_API_Patched = get_version.patched?.md5_vaild.os.ToUpper() ?? string.Empty;
 
                 }
                 else if (use_channel == "CN")
                 {
-                    MD5_UA_API_Original = get_version.original.md5_check.cn.userassembly.ToUpper();
-                    MD5_UA_API_Patched = get_version.patched.md5_vaild.cn.ToUpper();
+                    MD5_UA_API_Original = get_version.original?.md5_check.cn.userassembly.ToUpper() ?? string.Empty;
+                    MD5_UA_API_Patched = get_version.patched?.md5_vaild.cn.ToUpper() ?? string.Empty;
 
-                    MD5_Metadata_API_Original = get_version.original.md5_check.cn.metadata;
-                    MD5_Metadata_API_Patched = get_version.patched.md5_vaild.cn.ToUpper();
+                    MD5_Metadata_API_Original = get_version.original?.md5_check.cn.metadata ?? string.Empty;
+                    MD5_Metadata_API_Patched = get_version.patched?.md5_vaild.cn.ToUpper() ?? string.Empty;
 
-                    key_to_patch = get_version.patched.key_patch;
-                    key_to_find = get_version.original.key_find.cn;
+                    key_to_patch = get_version.patched?.key_patch;
+                    key_to_find = get_version.original?.key_find.cn;
 
                     Original_file_MA = DL_Original + "YuanShen_Data/Managed/Metadata/global-metadata.dat";
                     Original_file_UA = DL_Original + "YuanShen_Data/Native/UserAssembly.dll";
-                    MD5_API_Patched = get_version.patched.md5_vaild.os.ToUpper();
+                    MD5_API_Patched = get_version.patched?.md5_vaild.os.ToUpper() ?? string.Empty;
                 }
                 else
                 {
@@ -907,8 +908,9 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                                 MD5_UA_LOC_Currently = Tool.CalculateMD5(PathfileUA_Currently);
                                 Console.WriteLine("We copy PathfileUA_Original to PathfileUA_Currently (UserAssembly) (33)");
                             }
-                            catch (Exception exx)
+                            catch (Exception)
                             {
+                                // skip
                                 return "Error copy (1)";
                             }
                         }
@@ -941,8 +943,9 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                                     MD5_UA_LOC_Currently = Tool.CalculateMD5(PathfileUA_Currently);
                                     Console.WriteLine("We copy PathfileUA_Original to PathfileUA_Currently (UserAssembly) (6)");
                                 }
-                                catch (Exception exx)
+                                catch (Exception)
                                 {
+                                    // skip
                                     return "Error copy (2)";
                                 }
                             }
@@ -1003,8 +1006,9 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                         MD5_UA_LOC_Original = Tool.CalculateMD5(PathfileUA_Original);
                         Console.WriteLine("We copy file in PathfileUA_Currently to PathfileUA_Original files (22)");
                     }
-                    catch (Exception exx)
+                    catch (Exception)
                     {
+                        // skip
                         return "Error copy PathfileUA_Currently to PathfileUA_Original (1)";
                     }
                 }
@@ -1030,8 +1034,9 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                                 MD5_Metadata_LOC_Currently = Tool.CalculateMD5(PathfileMetadata_Currently);
                                 Console.WriteLine("We copy PathfileMetadata_Original to PathfileMetadata_Currently");
                             }
-                            catch (Exception exx)
+                            catch (Exception)
                             {
+                                // skip
                                 return "Error copy PathfileMetadata_Original to PathfileMetadata_Currently (111)";
                             }
                         }
@@ -1066,8 +1071,9 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                                     MD5_Metadata_LOC_Currently = Tool.CalculateMD5(PathfileMetadata_Currently);
                                     Console.WriteLine("We copy file PathfileMetadata_Original to PathfileMetadata_Currently (6)");
                                 }
-                                catch (Exception exx)
+                                catch (Exception)
                                 {
+                                    // skip
                                     return "Error copy PathfileMetadata_Original to PathfileMetadata_Currently (111)";
                                 }
                             }
@@ -1128,7 +1134,7 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                         MD5_Metadata_LOC_Original = Tool.CalculateMD5(PathfileMetadata_Original);
                         Console.WriteLine("We copy file in PathfileMetadata_Currently to PathfileMetadata_Original files (22)");
                     }
-                    catch (Exception exx)
+                    catch (Exception)
                     {
                         return "Error copy PathfileMetadata_Currently to PathfileMetadata_Original (1)";
                     }
@@ -1149,7 +1155,7 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                     {
                         File.Delete(PathfileUA_Original);
                     }
-                    catch (Exception exx)
+                    catch (Exception)
                     {
                         // skip
                     }
@@ -1164,7 +1170,7 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                     {
                         File.Delete(PathfileMetadata_Original);
                     }
-                    catch (Exception exx)
+                    catch (Exception)
                     {
                         // skip
                     }
@@ -1279,7 +1285,7 @@ public string PatchGame(bool patchit = true, bool online = true, string metode =
                             }
 
                             // keep patch
-                            var ManualUA = Game.Genshin.Patch.UserAssembly.Do(PathfileUA_Currently, PathfileUA_Patched, key_to_find, key_to_patch);
+                            var ManualUA = Game.Genshin.Patch.UserAssembly.Do(PathfileUA_Currently, PathfileUA_Patched, key_to_find!, key_to_patch!);
                             if (!String.IsNullOrEmpty(ManualUA))
                             {
                                 return "Error Patch UserAssembly: " + ManualUA;
@@ -1568,7 +1574,7 @@ public void CheckUpdate()
                 var GetDataUpdate = API.GetUpdate();
                 if (GetDataUpdate != null)
                 {
-                    var judul = GetDataUpdate.name; // is dev or nightly or name update
+                    var judul = "New Update: " + GetDataUpdate.name; // is dev or nightly or name update
                     var name_version = GetDataUpdate.tag_name; // version name
                     var infobody = GetDataUpdate.body; // info
 
@@ -1730,6 +1736,7 @@ public void IsAcess(bool onoff)
         {
             GetTypeGame.Enabled = onoff;
             btStartOfficialServer.Enabled = onoff;
+            btStartYuukiServer.Enabled = onoff;
             GetServerHost.Enabled = onoff;
 
             grProxy.Enabled = onoff;
@@ -1738,8 +1745,6 @@ public void IsAcess(bool onoff)
             grProfile.Enabled = onoff;
         }
 
-
-        [Obsolete]
         private void CheckGameRun_Tick(object sender, EventArgs e)
         {
             var isrun = Process.GetProcesses().Where(pr => pr.ProcessName == "YuanShen" || pr.ProcessName == "GenshinImpact" || pr.ProcessName == "StarRail" || pr.ProcessName == "injector");
@@ -1747,7 +1752,7 @@ private void CheckGameRun_Tick(object sender, EventArgs e)
             {
                 // Jika Game tidak berjalan....
                 IsGameRun = false;
-                btStart.Text = "Launch";
+                btStartNormal.Text = "Launch";
                 IsAcess(true);
 
                 AllStop();
@@ -1774,7 +1779,7 @@ private void CheckGameRun_Tick(object sender, EventArgs e)
             {
                 // jika game jalan
                 IsGameRun = true;
-                btStart.Text = "Stop";
+                btStartNormal.Text = "Stop";
                 DoneCheck = false;
                 IsAcess(false);
 
@@ -1786,14 +1791,12 @@ private void CheckGameRun_Tick(object sender, EventArgs e)
             }
         }
 
-        [Obsolete]
         public void AllStop()
         {
             StopProxy();
             StopGame();
         }
 
-        [Obsolete]
         public void StopProxy()
         {
             if (proxy != null)
@@ -1870,7 +1873,7 @@ private void linkDiscord_LinkClicked(object sender, LinkLabelLinkClickedEventArg
 
         private void linkGithub_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
         {
-            Process.Start(new ProcessStartInfo("https://github.com/YuukiPS/Launcher-PC") { UseShellExecute = true });
+            Process.Start(new ProcessStartInfo("https://github.com/YuukiPS/") { UseShellExecute = true });
         }
 
         private void linkWeb_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
@@ -1886,7 +1889,6 @@ private void CekUpdateTT_Tick(object sender, EventArgs e)
             }
         }
 
-        [Obsolete]
         private void Main_FormClosing(object sender, FormClosingEventArgs e)
         {
             if (IsGameRun)
@@ -1896,15 +1898,11 @@ private void Main_FormClosing(object sender, FormClosingEventArgs e)
             }
         }
 
-
-
-        [Obsolete]
         private void CheckProxyRun_Tick(object sender, EventArgs e)
         {
             CheckProxy(false);
         }
 
-        [Obsolete]
         void CheckProxy(bool force_off = false)
         {
             try
@@ -2027,8 +2025,8 @@ public string UpdateKey()
                 DEV_MA_Set_Key2_Patch.Text = "";
 
                 //UA
-                DEV_UA_Set_Key1_NoPatch.Text = get_version.original.key_find.os;
-                DEV_UA_Set_Key2_Patch.Text = get_version.patched.key_patch;
+                DEV_UA_Set_Key1_NoPatch.Text = get_version.original?.key_find.os;
+                DEV_UA_Set_Key2_Patch.Text = get_version.patched?.key_patch;
             }
             return "Successfully got Key, you can see update in developer tab";
         }
diff --git a/Yuuki/API.cs b/Yuuki/API.cs
index 2c35706..08ad08b 100644
--- a/Yuuki/API.cs
+++ b/Yuuki/API.cs
@@ -17,17 +17,17 @@ public class API
         public static string API_GITHUB_YuukiPS = "https://api.github.com/repos/YuukiPS/Launcher-PC/";
         public static string API_GITHUB_RSA = "https://api.github.com/repos/34736384/RSAPatch/";
 
-        public static Client GS_DL(string dl = "os")
+        public static Client? GS_DL(string dl = "os")
         {
             var client = new RestClient(API_DL_WB);
             var request = new RestRequest("genshin/download/latest/" + dl);
 
             var response = client.Execute(request);
             var getme = response.StatusCode == HttpStatusCode.OK ? response.Content : response.StatusCode.ToString();
-            return JsonConvert.DeserializeObject<Client>(getme);
+            return JsonConvert.DeserializeObject<Client>(getme!);
         }
 
-        public static VersionGenshin GetMD5VersionGS(string md5)
+        public static VersionGenshin? GetMD5VersionGS(string md5)
         {
             var client = new RestClient(API_DL_WB);
             var request = new RestRequest("genshin/version?md5=" + md5.ToUpper());
@@ -58,7 +58,7 @@ public static VersionGenshin GetMD5VersionGS(string md5)
             return null;
         }
 
-        public static Patch GetMD5Game(string md5, GameType type_game)
+        public static Patch? GetMD5Game(string md5, GameType type_game)
         {
             var url = type_game + "/patch/" + md5.ToUpper();
             Console.WriteLine("GetMD5Game: " + md5 + " url: " + url);
@@ -222,12 +222,6 @@ public static Patch GetMD5Game(string md5, GameType type_game)
             var request = new RestRequest("genshin/mod/akebi/" + ver_set);
             var response = client.Execute(request);
 
-            var whos = "cn";
-            if (ch == 2)
-            {
-                whos = "os";
-            }
-
             if (response.StatusCode == HttpStatusCode.OK)
             {
                 if (response.Content != null)
@@ -237,13 +231,17 @@ public static Patch GetMD5Game(string md5, GameType type_game)
                         var GetData = JsonConvert.DeserializeObject<Akebi>(response.Content);
                         if (GetData != null)
                         {
-                            if (ch == 2)
-                            {
-                                return GetData.package.cn.md5 + "|" + GetData.package.cn.url;
-                            }
-                            else
+                            var paket = GetData.package;
+                            if (paket != null)
                             {
-                                return GetData.package.os.md5 + "|" + GetData.package.os.url;
+                                if (ch == 2)
+                                {
+                                    return $"{paket.cn?.md5}|{paket.cn?.url}";
+                                }
+                                else
+                                {
+                                    return paket.os?.md5 + "|" + paket.os?.url;
+                                }
                             }
                         }
                     }
diff --git a/Yuuki/Proxy.cs b/Yuuki/Proxy.cs
index bfb38a9..9d1edfa 100644
--- a/Yuuki/Proxy.cs
+++ b/Yuuki/Proxy.cs
@@ -8,8 +8,8 @@ namespace YuukiPS_Launcher.Yuuki
 {
     public class Proxy
     {
-        public ProxyServer proxyServer;
-        private ExplicitProxyEndPoint explicitEndPoint;
+        public ProxyServer? proxyServer = null;
+        private ExplicitProxyEndPoint? explicitEndPoint = null;
 
         private int port;
         private Uri our_server;
@@ -20,7 +20,6 @@ public Proxy(int port, string host)
             this.our_server = new Uri(host);
         }
 
-        [Obsolete]
         public bool Start()
         {
             proxyServer = new ProxyServer();
@@ -36,7 +35,7 @@ public bool Start()
             {
                 //Tool.findAndKillProcessRuningOn("" + port + "");
             }
-            catch (Exception ex)
+            catch (Exception)
             {
                 // skip
             }
@@ -80,14 +79,19 @@ public bool Start()
 
         }
 
-        [Obsolete]
         public void Stop()
         {
             try
             {
-                explicitEndPoint.BeforeTunnelConnectRequest -= OnBeforeTunnelConnectRequest;
-                proxyServer.BeforeRequest -= OnRequest;
-                proxyServer.ServerCertificateValidationCallback -= OnCertificateValidation;
+                if (explicitEndPoint != null)
+                {
+                    explicitEndPoint.BeforeTunnelConnectRequest -= OnBeforeTunnelConnectRequest;
+                }
+                if (proxyServer != null)
+                {
+                    proxyServer.BeforeRequest -= OnRequest;
+                    proxyServer.ServerCertificateValidationCallback -= OnCertificateValidation;
+                }
             }
             catch (Exception ex)
             {
@@ -95,7 +99,7 @@ public void Stop()
             }
             finally
             {
-                if (proxyServer.ProxyRunning)
+                if (proxyServer != null && proxyServer.ProxyRunning)
                 {
                     Console.WriteLine("Proxy Stop");
                     proxyServer.Stop();
@@ -111,16 +115,19 @@ public void Stop()
 
         public void UninstallCertificate()
         {
+            if (proxyServer == null)
+            {
+                return;
+            }
             proxyServer.CertificateManager.RemoveTrustedRootCertificate();
             proxyServer.CertificateManager.RemoveTrustedRootCertificateAsAdmin();
         }
 
-        [Obsolete]
-        private Task OnBeforeTunnelConnectRequest(object sender, TunnelConnectSessionEventArgs e)
+        private async Task OnBeforeTunnelConnectRequest(object sender, TunnelConnectSessionEventArgs e)
         {
             // Do not decrypt SSL if not required domain/host
-            string hostname = e.WebSession.Request.RequestUri.Host;
-            if (HostPrivate(hostname) | hostname.EndsWith(our_server.Host))
+            string hostname = e.HttpClient.Request.RequestUri.Host;
+            if (HostPrivate(hostname) || hostname.EndsWith(our_server.Host))
             {
                 e.DecryptSsl = true;
             }
@@ -128,17 +135,16 @@ private Task OnBeforeTunnelConnectRequest(object sender, TunnelConnectSessionEve
             {
                 e.DecryptSsl = false;
             }
-            return Task.CompletedTask;
+            await Task.CompletedTask;
         }
 
-        [Obsolete]
         private Task OnRequest(object sender, SessionEventArgs e)
         {
             // Change Host
-            string hostname = e.WebSession.Request.RequestUri.Host;
+            string hostname = e.HttpClient.Request.RequestUri.Host;
             if (HostPrivate(hostname))
             {
-                var q = e.WebSession.Request.RequestUri;
+                var q = e.HttpClient.Request.RequestUri;
 
                 var url = e.HttpClient.Request.Url;
 
diff --git a/Yuuki/Server.cs b/Yuuki/Server.cs
index 77ad76f..afdbc4c 100644
--- a/Yuuki/Server.cs
+++ b/Yuuki/Server.cs
@@ -73,7 +73,7 @@ public static string DLJava()
                 {
                     Console.WriteLine("Unzip java");
                     FastZip fastZip = new FastZip();
-                    string fileFilter = null;
+                    string? fileFilter = null;
                     fastZip.ExtractZip(GetJavaZip, JAVA_FOLDER, fileFilter);
                 }
                 catch (Exception e)
@@ -105,24 +105,25 @@ public static string DLJava()
         }
         public static bool CheckJava(string p = "")
         {
-            //Console.WriteLine("JAVA Folder: " + p);
-            string version = "";
             try
             {
-                ProcessStartInfo procStartInfo = new ProcessStartInfo(p + "\\java", "-version ");
-                procStartInfo.RedirectStandardOutput = true;
-                procStartInfo.RedirectStandardError = true;
-                procStartInfo.UseShellExecute = false;
-                procStartInfo.CreateNoWindow = true;
-                Process proc = new Process();
-                proc.StartInfo = procStartInfo;
-                proc.Start();
-                version = proc.StandardError.ReadLine();
-                //Console.WriteLine("JAVA: " + version);
-                if (version.Contains(JAVA_RQS))
+                ProcessStartInfo? procStartInfo = new ProcessStartInfo(p + "\\java", "-version ");
+                procStartInfo!.RedirectStandardOutput = true;
+                procStartInfo!.RedirectStandardError = true;
+                procStartInfo!.UseShellExecute = false;
+                procStartInfo!.CreateNoWindow = true;
+
+                if (procStartInfo != null)
                 {
-                    //string strOutput = version.Split(' ')[2].Replace("\"", ""); 
-                    return true;
+                    Process proc = new Process();
+                    proc.StartInfo = procStartInfo!;
+                    proc.Start();
+                    //Console.WriteLine("JAVA Folder: " + p);
+                    string? version = proc.StandardError?.ReadLine();
+                    if (version != null && version.Contains(JAVA_RQS))
+                    {
+                        return true;
+                    }
                 }
             }
             catch (Exception e)
diff --git a/Yuuki/Tool.cs b/Yuuki/Tool.cs
index 68af6b5..63254f7 100644
--- a/Yuuki/Tool.cs
+++ b/Yuuki/Tool.cs
@@ -85,16 +85,17 @@ public static void ExecuteCMD(String strCommand)
             try
             {
                 Console.WriteLine(strCommand);
-                ProcessStartInfo commandInfo = new ProcessStartInfo();
-                commandInfo.CreateNoWindow = true;
-                commandInfo.UseShellExecute = false;
-                commandInfo.RedirectStandardInput = false;
-                commandInfo.RedirectStandardOutput = false;
-                commandInfo.FileName = "cmd.exe";
-                commandInfo.Arguments = strCommand;
+                ProcessStartInfo? commandInfo = new ProcessStartInfo();
+                commandInfo!.CreateNoWindow = true;
+                commandInfo!.UseShellExecute = false;
+                commandInfo!.RedirectStandardInput = false;
+                commandInfo!.RedirectStandardOutput = false;
+                commandInfo!.FileName = "cmd.exe";
+                commandInfo!.Arguments = strCommand;
+
                 if (commandInfo != null)
                 {
-                    Process process = Process.Start(commandInfo);
+                    Process? process = Process.Start(commandInfo!);
                     if (process != null)
                     {
                         //process.WaitForExit();
@@ -102,7 +103,7 @@ public static void ExecuteCMD(String strCommand)
                     }
                 }
             }
-            catch (Exception ex)
+            catch (Exception)
             {
                 // skip
             }
diff --git a/YuukiPS Launcher.csproj b/YuukiPS Launcher.csproj
index 32b1970..ffdbd04 100644
--- a/YuukiPS Launcher.csproj	
+++ b/YuukiPS Launcher.csproj	
@@ -12,14 +12,15 @@
     
     <ApplicationManifest>Properties\app.manifest</ApplicationManifest> 
     
-    <AssemblyVersion>2023.7.6.1005</AssemblyVersion>    
-    <FileVersion>2023.7.6.1005</FileVersion>
+    <AssemblyVersion>2023.7.6.1139</AssemblyVersion>    
+    <FileVersion>2023.7.6.1139</FileVersion>
     
     <EnableWindowsTargeting>true</EnableWindowsTargeting>
     <AssemblyName>YuukiPS</AssemblyName>
     <OutputType>Exe</OutputType>
     <ApplicationIcon>Asset\Image\yuuki.ico</ApplicationIcon>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <PlatformTarget>x64</PlatformTarget>
   </PropertyGroup>
 
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|AnyCPU'">