diff --git a/FNA.Core.csproj b/FNA.Core.csproj
index 5c4dd1a..335a213 100644
--- a/FNA.Core.csproj
+++ b/FNA.Core.csproj
@@ -1,6 +1,6 @@
 <Project Sdk="Microsoft.NET.Sdk">
 	<PropertyGroup>
-		<TargetFramework>net8.0</TargetFramework>
+		<TargetFramework>net4.0</TargetFramework>
 	</PropertyGroup>
 	<PropertyGroup>
 		<EnableDefaultItems>false</EnableDefaultItems>
diff --git a/abi/Microsoft.Xna.Framework.Game.cs b/abi/Microsoft.Xna.Framework.Game.cs
index 18b303a..cfac6a3 100644
--- a/abi/Microsoft.Xna.Framework.Game.cs
+++ b/abi/Microsoft.Xna.Framework.Game.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.IGameComponent))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.IUpdateable))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.GameComponent))]
diff --git a/abi/Microsoft.Xna.Framework.Game.csproj b/abi/Microsoft.Xna.Framework.Game.csproj
index 6873430..c646fb0 100644
--- a/abi/Microsoft.Xna.Framework.Game.csproj
+++ b/abi/Microsoft.Xna.Framework.Game.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="8.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
diff --git a/abi/Microsoft.Xna.Framework.GamerServices.cs b/abi/Microsoft.Xna.Framework.GamerServices.cs
index 5c1b28c..50b7ac2 100644
--- a/abi/Microsoft.Xna.Framework.GamerServices.cs
+++ b/abi/Microsoft.Xna.Framework.GamerServices.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.GamerServices.SignedInEventArgs))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.GamerServices.SignedOutEventArgs))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.GamerServices.InviteAcceptedEventArgs))]
diff --git a/abi/Microsoft.Xna.Framework.GamerServices.csproj b/abi/Microsoft.Xna.Framework.GamerServices.csproj
index c5382ab..66afa4d 100644
--- a/abi/Microsoft.Xna.Framework.GamerServices.csproj
+++ b/abi/Microsoft.Xna.Framework.GamerServices.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="8.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
diff --git a/abi/Microsoft.Xna.Framework.Graphics.cs b/abi/Microsoft.Xna.Framework.Graphics.cs
index b71e252..73beede 100644
--- a/abi/Microsoft.Xna.Framework.Graphics.cs
+++ b/abi/Microsoft.Xna.Framework.Graphics.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Graphics.RenderTargetBinding))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Graphics.VertexBufferBinding))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Graphics.GraphicsDevice))]
diff --git a/abi/Microsoft.Xna.Framework.Graphics.csproj b/abi/Microsoft.Xna.Framework.Graphics.csproj
index 1312ccc..e89438c 100644
--- a/abi/Microsoft.Xna.Framework.Graphics.csproj
+++ b/abi/Microsoft.Xna.Framework.Graphics.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="8.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
diff --git a/abi/Microsoft.Xna.Framework.Input.Touch.cs b/abi/Microsoft.Xna.Framework.Input.Touch.cs
index b7ccfdf..dbf675b 100644
--- a/abi/Microsoft.Xna.Framework.Input.Touch.cs
+++ b/abi/Microsoft.Xna.Framework.Input.Touch.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Input.Touch.GestureType))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Input.Touch.GestureSample))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Input.Touch.TouchCollection))]
diff --git a/abi/Microsoft.Xna.Framework.Input.Touch.csproj b/abi/Microsoft.Xna.Framework.Input.Touch.csproj
index ddcd898..fdfc853 100644
--- a/abi/Microsoft.Xna.Framework.Input.Touch.csproj
+++ b/abi/Microsoft.Xna.Framework.Input.Touch.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="8.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
diff --git a/abi/Microsoft.Xna.Framework.Net.cs b/abi/Microsoft.Xna.Framework.Net.cs
index 3e133ae..8ca694b 100644
--- a/abi/Microsoft.Xna.Framework.Net.cs
+++ b/abi/Microsoft.Xna.Framework.Net.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Net.NetworkSessionEndedEventArgs))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Net.GamerJoinedEventArgs))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Net.GamerLeftEventArgs))]
diff --git a/abi/Microsoft.Xna.Framework.Net.csproj b/abi/Microsoft.Xna.Framework.Net.csproj
index 1a821e9..8b99048 100644
--- a/abi/Microsoft.Xna.Framework.Net.csproj
+++ b/abi/Microsoft.Xna.Framework.Net.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="8.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
diff --git a/abi/Microsoft.Xna.Framework.Storage.cs b/abi/Microsoft.Xna.Framework.Storage.cs
index 6061690..e6a1da0 100644
--- a/abi/Microsoft.Xna.Framework.Storage.cs
+++ b/abi/Microsoft.Xna.Framework.Storage.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Storage.StorageDevice))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Storage.StorageContainer))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Storage.StorageDeviceNotConnectedException))]
\ No newline at end of file
diff --git a/abi/Microsoft.Xna.Framework.Storage.csproj b/abi/Microsoft.Xna.Framework.Storage.csproj
index 188ca56..c5129ef 100644
--- a/abi/Microsoft.Xna.Framework.Storage.csproj
+++ b/abi/Microsoft.Xna.Framework.Storage.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="8.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
diff --git a/abi/Microsoft.Xna.Framework.Video.cs b/abi/Microsoft.Xna.Framework.Video.cs
index 04fd033..a476eb6 100644
--- a/abi/Microsoft.Xna.Framework.Video.cs
+++ b/abi/Microsoft.Xna.Framework.Video.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Media.VideoSoundtrackType))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Media.Video))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Media.VideoPlayer))]
\ No newline at end of file
diff --git a/abi/Microsoft.Xna.Framework.Video.csproj b/abi/Microsoft.Xna.Framework.Video.csproj
index 3ef8084..47d73c1 100644
--- a/abi/Microsoft.Xna.Framework.Video.csproj
+++ b/abi/Microsoft.Xna.Framework.Video.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="8.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
diff --git a/abi/Microsoft.Xna.Framework.Xact.cs b/abi/Microsoft.Xna.Framework.Xact.cs
index 36eb974..2bc60c1 100644
--- a/abi/Microsoft.Xna.Framework.Xact.cs
+++ b/abi/Microsoft.Xna.Framework.Xact.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Audio.RendererDetail))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Audio.Cue))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Audio.AudioStopOptions))]
diff --git a/abi/Microsoft.Xna.Framework.Xact.csproj b/abi/Microsoft.Xna.Framework.Xact.csproj
index b467ac6..047ccac 100644
--- a/abi/Microsoft.Xna.Framework.Xact.csproj
+++ b/abi/Microsoft.Xna.Framework.Xact.csproj
@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<Project DefaultTargets="Build" ToolsVersion="4.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+<Project DefaultTargets="Build" ToolsVersion="8.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <PropertyGroup>
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
diff --git a/abi/Microsoft.Xna.Framework.cs b/abi/Microsoft.Xna.Framework.cs
index eade86d..0077bb1 100644
--- a/abi/Microsoft.Xna.Framework.cs
+++ b/abi/Microsoft.Xna.Framework.cs
@@ -1,6 +1,6 @@
 using System.Reflection;
 using System.Runtime.CompilerServices;
-[assembly: AssemblyVersion("4.0.0.0")]
+[assembly: AssemblyVersion("8.0.0.0")]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Media.MediaState))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Input.Keyboard))]
 [assembly: TypeForwardedToAttribute(typeof(Microsoft.Xna.Framework.Input.Mouse))]