diff --git a/Properties/AssemblyInfo.cs b/Properties/AssemblyInfo.cs
index 6375465..29b5cf7 100644
--- a/Properties/AssemblyInfo.cs
+++ b/Properties/AssemblyInfo.cs
@@ -11,9 +11,9 @@ using System.Runtime.InteropServices;
 [assembly: AssemblyConfiguration("")]
 [assembly: AssemblyCompany("")]
 [assembly: AssemblyProduct("XCI Explorer")]
-[assembly: AssemblyCopyright("Copyright ©  2019")]
+[assembly: AssemblyCopyright("Copyright ©  2020")]
 [assembly: AssemblyTrademark("")]
 [assembly: ComVisible(false)]
 [assembly: Guid("206c6c47-87b1-477f-b6e6-f7e7c1a92f8f")]
-[assembly: AssemblyFileVersion("1.4.9")]
-[assembly: AssemblyVersion("1.4.9")]
+[assembly: AssemblyFileVersion("1.5.0")]
+[assembly: AssemblyVersion("1.5.0")]
diff --git a/XCI Explorer.csproj b/XCI Explorer.csproj
index 70c8fbe..82a2c48 100644
--- a/XCI Explorer.csproj	
+++ b/XCI Explorer.csproj	
@@ -7,7 +7,7 @@
     <OutputType>WinExe</OutputType>
     <AssemblyName>XCI-Explorer</AssemblyName>
     <TargetFrameworkIdentifier>.NETFramework</TargetFrameworkIdentifier>
-    <TargetFrameworkVersion>v4.7.2</TargetFrameworkVersion>
+    <TargetFrameworkVersion>v4.8</TargetFrameworkVersion>
     <WarningLevel>4</WarningLevel>
     <AllowUnsafeBlocks>True</AllowUnsafeBlocks>
     <NuGetPackageImportStamp>
diff --git a/XCI_Explorer/MainForm.cs b/XCI_Explorer/MainForm.cs
index b686abb..32baec1 100644
--- a/XCI_Explorer/MainForm.cs
+++ b/XCI_Explorer/MainForm.cs
@@ -67,7 +67,7 @@ namespace XCI_Explorer
                 {
                     using (var client = new WebClient())
                     {
-                        client.DownloadFile(Util.Base64Decode("aHR0cHM6Ly9wYXN0ZWJpbi5jb20vcmF3L3dZbUxUTkxx"), "keys.txt");
+                        client.DownloadFile(Util.Base64Decode("aHR0cHM6Ly9wYXN0ZWJpbi5jb20vcmF3L2NWR3JQSHp6"), "keys.txt");
                     }
                 }
 
@@ -124,6 +124,7 @@ namespace XCI_Explorer
                                                      where x.Length > 1
                                                      select x).ToDictionary((string[] x) => x[0].Trim(), (string[] x) => x[1]);
             Mkey = "master_key_";
+            string MkeyL = "master_key_";
             if (NCA.NCA_Headers[0].MasterKeyRev == 0 || NCA.NCA_Headers[0].MasterKeyRev == 1)
             {
                 Mkey += "00";
@@ -131,12 +132,18 @@ namespace XCI_Explorer
             else if (NCA.NCA_Headers[0].MasterKeyRev < 17)
             {
                 int num = NCA.NCA_Headers[0].MasterKeyRev - 1;
-                Mkey = Mkey + "0" + num.ToString();
+                string capchar = num.ToString("X");
+                string lowchar = capchar.ToLower();
+                Mkey = Mkey + "0" + capchar;
+                MkeyL = MkeyL + "0" + lowchar;
             }
             else if (NCA.NCA_Headers[0].MasterKeyRev >= 17)
             {
                 int num2 = NCA.NCA_Headers[0].MasterKeyRev - 1;
+                string capchar = num2.ToString("X");
+                string lowchar = capchar.ToLower();
                 Mkey += num2.ToString();
+                MkeyL += num2.ToString();
             }
             try
             {
@@ -145,7 +152,15 @@ namespace XCI_Explorer
             }
             catch
             {
-                return false;
+                try
+                {
+                    MkeyL = dictionary[MkeyL].Replace(" ", "");
+                    return true;
+                }
+                catch
+                {
+                    return false;
+                }
             }
         }
 
@@ -188,11 +203,11 @@ namespace XCI_Explorer
                     MessageBox.Show("File is corrupt or unsupported.");
                 }
             }
-            catch(Exception e)
+            catch (Exception e)
             {
                 MessageBox.Show("Error: " + e.ToString() + "\nFile is corrupt or unsupported.");
             }
-            
+
         }
 
         private void B_LoadROM_Click(object sender, EventArgs e)
@@ -634,15 +649,24 @@ namespace XCI_Explorer
                     else if (strArray[0] == "Master Key Revision")
                     {
                         string MasterKey = strArray[1].Trim();
+                        int keyblob;
+
                         if (MasterKey.Contains("Unknown"))
                         {
-                            int keyblob;
                             if (int.TryParse(new string(MasterKey.TakeWhile(Char.IsDigit).ToArray()), out keyblob))
                             {
                                 MasterKey = Util.GetMkey((byte)(keyblob + 1)).Replace("MasterKey", "");
                             }
+                            TB_MKeyRev.Text = "MasterKey" + MasterKey;
                         }
-                        TB_MKeyRev.Text = "MasterKey" + MasterKey;
+                        else
+                        {
+                            MasterKey = MasterKey.Split(new char[2] { 'x', ' ' })[1];
+                            keyblob = Convert.ToInt32(MasterKey, 16);
+                            MasterKey = Util.GetMkey((byte)(keyblob + 1));
+                            TB_MKeyRev.Text = MasterKey;
+                        }
+
                         break;
                     }
                 }
@@ -650,10 +674,19 @@ namespace XCI_Explorer
                 process.Close();
             }
             catch { }
-            if (Directory.Exists("tmp"))
+
+            try
+            {
+                File.Delete("meta");
+                Directory.Delete("data", true);
+            }
+            catch { }
+
+            try
             {
                 Directory.Delete("tmp", true);
             }
+            catch { }
 
             TB_Capacity.Text = "eShop";
 
@@ -684,15 +717,12 @@ namespace XCI_Explorer
 
                         if (SecureName[si].EndsWith(".cnmt.nca"))
                         {
-                            if (File.Exists("meta"))
+                            try
                             {
                                 File.Delete("meta");
-                            }
-
-                            if (Directory.Exists("data"))
-                            {
                                 Directory.Delete("data", true);
                             }
+                            catch { }
 
                             using (FileStream fileStream2 = File.OpenWrite("meta"))
                             {
@@ -755,15 +785,12 @@ namespace XCI_Explorer
 
                         if (ncaTarget.Contains(SecureName[si]))
                         {
-                            if (File.Exists("meta"))
+                            try
                             {
                                 File.Delete("meta");
-                            }
-
-                            if (Directory.Exists("data"))
-                            {
                                 Directory.Delete("data", true);
                             }
+                            catch { }
 
                             using (FileStream fileStream2 = File.OpenWrite("meta"))
                             {
diff --git a/XCI_Explorer/Util.cs b/XCI_Explorer/Util.cs
index b3f39bc..3583c85 100644
--- a/XCI_Explorer/Util.cs
+++ b/XCI_Explorer/Util.cs
@@ -10,6 +10,8 @@ namespace XCI_Explorer
         {
             switch (id)
             {
+                case 250:
+                    return "1GB";
                 case 248:
                     return "2GB";
                 case 240:
@@ -51,7 +53,7 @@ namespace XCI_Explorer
                 case 10:
                     return "MasterKey9 (9.0.0-9.0.1)";
                 case 11:
-                    return "MasterKey10 (?)";
+                    return "MasterKey10 (9.1.0-9.2.0)";
                 case 12:
                     return "MasterKey11 (?)";
                 case 13:
diff --git a/app.config b/app.config
index 312bb3f..3e0e37c 100644
--- a/app.config
+++ b/app.config
@@ -1,3 +1,3 @@
 <?xml version="1.0" encoding="utf-8"?>
 <configuration>
-<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.7.2"/></startup></configuration>
+<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.8"/></startup></configuration>