diff --git a/FModel/App.config b/FModel/App.config
index 89e07837..96bb0aa6 100644
--- a/FModel/App.config
+++ b/FModel/App.config
@@ -1,4 +1,4 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <configuration>
     <configSections>
         <sectionGroup name="userSettings" type="System.Configuration.UserSettingsGroup, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089">
@@ -79,6 +79,9 @@
             <setting name="FUpdateSettings" serializeAs="String">
                 <value>True</value>
             </setting>
+            <setting name="ReloadAES" serializeAs="String">
+                <value>True</value>
+            </setting>
         </FModel.Properties.Settings>
     </userSettings>
   <runtime>
diff --git a/FModel/FModel.csproj b/FModel/FModel.csproj
index 5c0df7d5..01f61b50 100644
--- a/FModel/FModel.csproj
+++ b/FModel/FModel.csproj
@@ -43,6 +43,7 @@
     <ErrorReport>prompt</ErrorReport>
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
+    <LangVersion>7.1</LangVersion>
   </PropertyGroup>
   <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
     <PlatformTarget>x64</PlatformTarget>
@@ -54,6 +55,7 @@
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
     <Prefer32Bit>false</Prefer32Bit>
+    <LangVersion>7.1</LangVersion>
   </PropertyGroup>
   <PropertyGroup>
     <ApplicationIcon>Logo.ico</ApplicationIcon>
diff --git a/FModel/FModel_Main.xaml b/FModel/FModel_Main.xaml
index c326a826..3bec7842 100644
--- a/FModel/FModel_Main.xaml
+++ b/FModel/FModel_Main.xaml
@@ -1,4 +1,4 @@
-<Window
+<Window
     xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
     xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
     xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
@@ -37,6 +37,8 @@
                 <MenuItem x:Name="MI_LoadOnePAK" Header="Load One PAK" IsEnabled="False"/>
                 <MenuItem x:Name="MI_LoadAllPAKs" Header="Load All PAKs" Padding="2,4,2,2" IsEnabled="False" Click="MI_LoadAllPAKs_Click"/>
                 <Separator/>
+                <MenuItem x:Name="reloadAES" Header="Reload AES Key" Click="MenuItem_Click"/>
+                <Separator/>
                 <MenuItem x:Name="MI_DownloadBackups" Header="Download Backups"/>
                 <MenuItem x:Name="MI_BackupPAKs" Header="Backup PAKs" Click="MI_BackupPAKs_Click" IsEnabled="False"/>
                 <Separator/>
diff --git a/FModel/FModel_Main.xaml.cs b/FModel/FModel_Main.xaml.cs
index ee861298..7e2806e8 100644
--- a/FModel/FModel_Main.xaml.cs
+++ b/FModel/FModel_Main.xaml.cs
@@ -1,4 +1,4 @@
-using AutoUpdaterDotNET;
+using AutoUpdaterDotNET;
 using FModel.Forms;
 using FModel.Forms.HexViewer;
 using FModel.Methods;
@@ -51,7 +51,8 @@ namespace FModel
                 FoldersUtility.LoadFolders();
                 FoldersUtility.CheckWatermark();
                 RegisterFromPath.FilterPAKs();
-                DynamicKeysChecker.SetDynamicKeys();
+                if (FProp.Default.ReloadAES)
+                    DynamicKeysChecker.SetDynamicKeys();
                 RegisterDownloadedBackups.LoadBackupFiles();
             }).ContinueWith(TheTask =>
             {
@@ -356,5 +357,10 @@ namespace FModel
             }
         }
         #endregion
+
+        private void MenuItem_Click(object sender, RoutedEventArgs e)
+        {
+            DynamicKeysChecker.SetDynamicKeys();
+        }
     }
 }
diff --git a/FModel/Forms/FModel_Settings.xaml b/FModel/Forms/FModel_Settings.xaml
index d6dfcae9..56583351 100644
--- a/FModel/Forms/FModel_Settings.xaml
+++ b/FModel/Forms/FModel_Settings.xaml
@@ -1,4 +1,4 @@
-<Window x:Class="FModel.Forms.FModel_Settings"
+<Window x:Class="FModel.Forms.FModel_Settings"
         xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
         xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
         xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
@@ -6,7 +6,7 @@
         xmlns:local="clr-namespace:FModel.Forms"
         mc:Ignorable="d"
         Title="Settings"
-        Height="558" 
+        Height="585" 
         Width="610"
         Style="{StaticResource {x:Type Window}}" 
         WindowStartupLocation="CenterScreen" 
@@ -14,22 +14,23 @@
         ResizeMode="CanMinimize" Loaded="Window_Loaded"
         >
     <Grid>
-        <GroupBox Header=".PAK Files" HorizontalAlignment="Left" Height="48" Margin="10,10,0,0" VerticalAlignment="Top" Width="574" BorderBrush="#7F748198">
+        <GroupBox Header=".PAK Files" HorizontalAlignment="Left" Height="72" Margin="10,10,0,0" VerticalAlignment="Top" Width="574" BorderBrush="#7F748198">
             <Grid>
                 <Label Content="Input:" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="2,1,0,0"/>
-                <TextBox x:Name="InputTextBox" Height="19" Margin="41,4,121,0" TextWrapping="NoWrap" VerticalAlignment="Top" Foreground="#FFEFEFEF"/>
-                <Button x:Name="BrowseInput_Button" Content="..." HorizontalAlignment="Left" Margin="446,4,0,0" VerticalAlignment="Top" Width="20" Click="BrowseInput_Button_Click"/>
-                <CheckBox x:Name="bDiffFileSize" Content="Diff w/ File Size" HorizontalAlignment="Left" Margin="471,7,0,0" VerticalAlignment="Top"/>
+                <TextBox x:Name="InputTextBox" Height="19" Margin="41,4,35,0" TextWrapping="NoWrap" VerticalAlignment="Top" Foreground="#FFEFEFEF"/>
+                <Button x:Name="BrowseInput_Button" Content="..." HorizontalAlignment="Left" Margin="532,4,0,0" VerticalAlignment="Top" Width="20" Click="BrowseInput_Button_Click"/>
+                <CheckBox x:Name="bDiffFileSize" Content="Diff w/ File Size" HorizontalAlignment="Left" Margin="10,31,0,0" VerticalAlignment="Top"/>
+                <CheckBox x:Name="checkReloadAES" Content="AES reload automatically" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="120,31,0,0" Width="148" IsChecked="True"/>
             </Grid>
         </GroupBox>
-        <GroupBox Header="Extraction" HorizontalAlignment="Left" Height="48" Margin="10,63,0,0" VerticalAlignment="Top" Width="574" BorderBrush="#7F748198">
+        <GroupBox Header="Extraction" HorizontalAlignment="Left" Height="48" Margin="10,87,0,0" VerticalAlignment="Top" Width="574" BorderBrush="#7F748198">
             <Grid>
                 <Label Content="Output:" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="2,2,0,-1"/>
                 <TextBox x:Name="OutputTextBox" Height="19" Margin="50,4,35,0" TextWrapping="NoWrap" VerticalAlignment="Top" Foreground="#FFEFEFEF"/>
                 <Button x:Name="BrowseOutput_Button" Content="..." HorizontalAlignment="Left" Margin="532,4,0,0" VerticalAlignment="Top" Width="20" Click="BrowseOutput_Button_Click"/>
             </Grid>
         </GroupBox>
-        <GroupBox Header="Icon Creator" HorizontalAlignment="Left" Height="206" Margin="10,116,0,0" VerticalAlignment="Top" Width="574" BorderBrush="#7F748198">
+        <GroupBox Header="Icon Creator" HorizontalAlignment="Left" Height="206" Margin="10,140,0,0" VerticalAlignment="Top" Width="574" BorderBrush="#7F748198">
             <Grid>
                 <Label Content="Language:" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="2,2,0,0"/>
                 <ComboBox x:Name="ComboBox_Language" HorizontalAlignment="Left" Margin="61,5,0,0" VerticalAlignment="Top" Width="332" BorderBrush="#7F748198" Background="#FF333C46">
@@ -75,7 +76,7 @@
                 <Button x:Name="OpenIconCreator_Button" Content="Open Image" HorizontalAlignment="Right" VerticalAlignment="Bottom" Width="164" Click="OpenIconCreator_Button_Click"/>
             </Grid>
         </GroupBox>
-        <GroupBox Header="Challenges Theme" HorizontalAlignment="Left" Height="155" Margin="10,327,0,0" VerticalAlignment="Top" Width="574" BorderBrush="#7F748198">
+        <GroupBox Header="Challenges Theme" HorizontalAlignment="Left" Height="155" Margin="10,351,0,0" VerticalAlignment="Top" Width="574" BorderBrush="#7F748198">
             <Grid>
                 <Label Content="Watermark:" HorizontalAlignment="Left" VerticalAlignment="Top" Margin="2,2,0,-1"/>
                 <TextBox x:Name="WatermarkChallenge_TextBox" Height="19" Margin="69,4,263,0" TextWrapping="NoWrap" VerticalAlignment="Top" Foreground="#FFEFEFEF" TextChanged="UpdateChallengeCustomTheme"/>
diff --git a/FModel/Forms/FModel_Settings.xaml.cs b/FModel/Forms/FModel_Settings.xaml.cs
index 9c26cf44..da57524c 100644
--- a/FModel/Forms/FModel_Settings.xaml.cs
+++ b/FModel/Forms/FModel_Settings.xaml.cs
@@ -1,4 +1,4 @@
-using FModel.Methods.MessageBox;
+using FModel.Methods.MessageBox;
 using System.Windows;
 using System;
 using FProp = FModel.Properties.Settings;
@@ -108,6 +108,7 @@ namespace FModel.Forms
             InputTextBox.Text = FProp.Default.FPak_Path;
             bDiffFileSize.IsChecked = FProp.Default.FDiffFileSize;
             OutputTextBox.Text = FProp.Default.FOutput_Path;
+            checkReloadAES.IsChecked = FProp.Default.ReloadAES;
 
             ComboBox_Language.SelectedIndex = (int)GetEnumValueFromDescription<LIndexes>(FProp.Default.FLanguage);
             ComboBox_Design.SelectedIndex = (int)GetEnumValueFromDescription<RIndexes>(FProp.Default.FRarity_Design);
@@ -137,7 +138,9 @@ namespace FModel.Forms
                 FProp.Default.FPak_Path = InputTextBox.Text;
                 DarkMessageBox.Show("Please, restart FModel to apply your new input path", "FModel Input Path Changed", MessageBoxButton.OK, MessageBoxImage.Information);
             }
+
             FProp.Default.FDiffFileSize = (bool)bDiffFileSize.IsChecked;
+            FProp.Default.ReloadAES     = (bool)checkReloadAES.IsChecked;
 
             if (!string.Equals(FProp.Default.FOutput_Path, OutputTextBox.Text))
             {
diff --git a/FModel/Properties/Settings.Designer.cs b/FModel/Properties/Settings.Designer.cs
index 7d45c084..c2aebab5 100644
--- a/FModel/Properties/Settings.Designer.cs
+++ b/FModel/Properties/Settings.Designer.cs
@@ -1,10 +1,10 @@
 //------------------------------------------------------------------------------
 // <auto-generated>
-//     Ce code a été généré par un outil.
-//     Version du runtime :4.0.30319.42000
+//     Este código fue generado por una herramienta.
+//     Versión de runtime:4.0.30319.42000
 //
-//     Les modifications apportées à ce fichier peuvent provoquer un comportement incorrect et seront perdues si
-//     le code est régénéré.
+//     Los cambios en este archivo podrían causar un comportamiento incorrecto y se perderán si
+//     se vuelve a generar el código.
 // </auto-generated>
 //------------------------------------------------------------------------------
 
@@ -12,7 +12,7 @@ namespace FModel.Properties {
     
     
     [global::System.Runtime.CompilerServices.CompilerGeneratedAttribute()]
-    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "16.2.0.0")]
+    [global::System.CodeDom.Compiler.GeneratedCodeAttribute("Microsoft.VisualStudio.Editors.SettingsDesigner.SettingsSingleFileGenerator", "15.9.0.0")]
     internal sealed partial class Settings : global::System.Configuration.ApplicationSettingsBase {
         
         private static Settings defaultInstance = ((Settings)(global::System.Configuration.ApplicationSettingsBase.Synchronized(new Settings())));
@@ -298,5 +298,17 @@ namespace FModel.Properties {
                 this["FUpdateSettings"] = value;
             }
         }
+        
+        [global::System.Configuration.UserScopedSettingAttribute()]
+        [global::System.Diagnostics.DebuggerNonUserCodeAttribute()]
+        [global::System.Configuration.DefaultSettingValueAttribute("True")]
+        public bool ReloadAES {
+            get {
+                return ((bool)(this["ReloadAES"]));
+            }
+            set {
+                this["ReloadAES"] = value;
+            }
+        }
     }
 }
diff --git a/FModel/Properties/Settings.settings b/FModel/Properties/Settings.settings
index 6786f1de..7f3ac805 100644
--- a/FModel/Properties/Settings.settings
+++ b/FModel/Properties/Settings.settings
@@ -71,5 +71,8 @@
     <Setting Name="FUpdateSettings" Type="System.Boolean" Scope="User">
       <Value Profile="(Default)">True</Value>
     </Setting>
+    <Setting Name="ReloadAES" Type="System.Boolean" Scope="User">
+      <Value Profile="(Default)">True</Value>
+    </Setting>
   </Settings>
 </SettingsFile>
\ No newline at end of file