diff --git a/src/EfuseManager/MainWindow.xaml b/src/EfuseManager/MainWindow.xaml
index bca5a00..1464723 100644
--- a/src/EfuseManager/MainWindow.xaml
+++ b/src/EfuseManager/MainWindow.xaml
@@ -16,6 +16,7 @@
             <RowDefinition Height="Auto"/>
             <RowDefinition Height="Auto"/>
             <RowDefinition Height="*"/>
+            <RowDefinition Height="Auto"/>
         </Grid.RowDefinitions>
         <GroupBox Grid.Row="0" Header="Device">
             <Grid Margin="0, 2, 0,2">
@@ -63,5 +64,20 @@
         <views:EfuseView 
             Grid.Row="2"
             DataContext="{Binding EfuseMap}"/>
+        <StatusBar Grid.Row="3" Height="24">
+            <StatusBar.ItemsPanel>
+                <ItemsPanelTemplate>
+                    <Grid>
+                        <Grid.ColumnDefinitions>
+                            <ColumnDefinition Width="Auto" />
+                            <ColumnDefinition Width="*" />
+                        </Grid.ColumnDefinitions>
+                    </Grid>
+                </ItemsPanelTemplate>
+            </StatusBar.ItemsPanel>
+            <StatusBarItem Grid.Column="0">
+                <TextBlock Text="{Binding Status}" d:DesignWidth="40"/>
+            </StatusBarItem>
+        </StatusBar>
     </Grid>
 </Window>
diff --git a/src/EfuseManager/ViewModels/EfuseMapViewModel.cs b/src/EfuseManager/ViewModels/EfuseMapViewModel.cs
index c081b59..19dc1e8 100644
--- a/src/EfuseManager/ViewModels/EfuseMapViewModel.cs
+++ b/src/EfuseManager/ViewModels/EfuseMapViewModel.cs
@@ -14,4 +14,9 @@ public void LoadData(byte[] efuseMap)
     {
         _originalData = efuseMap;
     }
+
+    public byte[] GetData()
+    {
+        return _originalData;
+    }
 }
\ No newline at end of file
diff --git a/src/EfuseManager/ViewModels/MainViewModel.cs b/src/EfuseManager/ViewModels/MainViewModel.cs
index 193e348..6965e00 100644
--- a/src/EfuseManager/ViewModels/MainViewModel.cs
+++ b/src/EfuseManager/ViewModels/MainViewModel.cs
@@ -1,6 +1,7 @@
 using System;
 using System.Collections.Generic;
 using System.Collections.ObjectModel;
+using System.IO;
 using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
@@ -14,6 +15,7 @@
 using Microsoft.Extensions.Logging.Abstractions;
 
 using MvvmDialogs;
+using MvvmDialogs.FrameworkDialogs.SaveFile;
 
 using Rtl8812auNet;
 using Rtl8812auNet.Rtl8812au.Enumerations;
@@ -25,6 +27,7 @@ internal class MainViewModel : ObservableObject, IDisposable
     private readonly IDialogService _dialogService;
     private readonly WiFiDriver _driver;
     private DeviceViewModel? _selectedDevice;
+    private string _status = "";
 
     public MainViewModel(IDialogService dialogService)
     {
@@ -59,6 +62,12 @@ public DeviceViewModel? SelectedDevice
 
     public EfuseMapViewModel EfuseMap { get; } = new();
 
+    public string Status
+    {
+        get => _status;
+        set => SetProperty(ref _status, value);
+    }
+
     private void ExecuteWrite()
     {
         _dialogService.ShowMessageBox(
@@ -73,9 +82,11 @@ private void ExecuteRead()
     {
         if (SelectedDevice == null)
         {
+            Status = "Error: No device selected";
             return;
         }
 
+        Status = "Start read";
         var device = SelectedDevice.RealDevice;
         var rtlDevice = _driver.CreateRtlDevice(device);
         rtlDevice.NetDevOpen(new()
@@ -87,16 +98,26 @@ private void ExecuteRead()
         });
         var efuseMap = rtlDevice.ReadEfuse();
         EfuseMap.LoadData(efuseMap);
+        Status = "Ready. OK.";
     }
     
     private void ExecuteWriteFile()
     {
-        _dialogService.ShowMessageBox(
+        var efuseMap = EfuseMap.GetData();
+        var saveFileDialogSettings = new SaveFileDialogSettings()
+        {
+            AddExtension = true,
+            DefaultExt = ".bin"
+        };
+        var isOk = _dialogService.ShowSaveFileDialog(
             this,
-            "Not implemented",
-            "Not implemented",
-            MessageBoxButton.OK,
-            MessageBoxImage.Warning);
+            saveFileDialogSettings);
+        if (isOk == true)
+        {
+            File.WriteAllBytes(
+                saveFileDialogSettings.FileName,
+                efuseMap);
+        }
     }
 
     private void ExecuteReadFile()