diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 4bd98ce..f88cce8 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,5 +1,11 @@
 # AstroProject Forge — note di rilascio
 
+## 1.1.2 — 28 luglio 2026
+
+- Anche gli aggiornamenti avviati dalle versioni precedenti mostrano ora una finestra
+  di avanzamento compatibile, con fase corrente e percentuale.
+- Le versioni recenti continuano a usare direttamente la finestra nativa di Inno Setup.
+
 ## 1.1.1 — 28 luglio 2026
 
 - Durante l'aggiornamento automatico Windows l'installer mostra ora una finestra con
diff --git a/dotnet/AstroForge.App/MainWindow.xaml.cs b/dotnet/AstroForge.App/MainWindow.xaml.cs
index 5288d65..24428b4 100644
--- a/dotnet/AstroForge.App/MainWindow.xaml.cs
+++ b/dotnet/AstroForge.App/MainWindow.xaml.cs
@@ -294,6 +294,7 @@ private async void DownloadUpdate_Click(object sender, RoutedEventArgs e)
             startInfo.ArgumentList.Add("/CLOSEAPPLICATIONS");
             startInfo.ArgumentList.Add("/FORCECLOSEAPPLICATIONS");
             startInfo.ArgumentList.Add("/APFUPDATE=1");
+            startInfo.ArgumentList.Add("/APFVISIBLE=1");
             startInfo.ArgumentList.Add($"/LOG={logPath}");
             if (Process.Start(startInfo) is null)
                 throw new InvalidOperationException("Impossibile avviare l'installer dell'aggiornamento.");
diff --git a/installer/AstroProjectForge.iss b/installer/AstroProjectForge.iss
index dba85fa..e20d8c1 100644
--- a/installer/AstroProjectForge.iss
+++ b/installer/AstroProjectForge.iss
@@ -56,6 +56,14 @@ DisableProgramGroupPage=yes
 Name: "italian"; MessagesFile: "compiler:Languages\Italian.isl"
 Name: "english"; MessagesFile: "compiler:Default.isl"
 
+[CustomMessages]
+italian.UpdateProgressTitle=Aggiornamento di AstroProject Forge
+italian.UpdateProgressDescription=Installazione in corso. L'app si riavvierà automaticamente.
+italian.UpdateProgressPhase=Aggiornamento dei file…
+english.UpdateProgressTitle=Updating AstroProject Forge
+english.UpdateProgressDescription=Installation in progress. The app will restart automatically.
+english.UpdateProgressPhase=Updating files…
+
 [Tasks]
 Name: "desktopicon"; Description: "Crea un collegamento sul desktop"; GroupDescription: "Collegamenti aggiuntivi:"; Flags: unchecked
 
@@ -84,6 +92,10 @@ Root: HKA; Subkey: "Software\Classes\AstroProjectForge.Project\shell\open\comman
 var
   LegacyInstallDirectories: TArrayOfString;
   LegacyUninstallRegistryKeys: TArrayOfString;
+  UpdateProgressForm: TSetupForm;
+  UpdateProgressBar: TNewProgressBar;
+  UpdateProgressLabel: TNewStaticText;
+  UpdatePercentLabel: TNewStaticText;
 
 function LegacyUninstallId(): String;
 begin
@@ -146,6 +158,52 @@ begin
   Result := True;
 end;
 
+function IsAutomaticUpdate(): Boolean; forward;
+
+function NeedsCompatibilityProgress(): Boolean;
+begin
+  Result :=
+    IsAutomaticUpdate() and
+    (CompareText(ExpandConstant('{param:APFVISIBLE|0}'), '1') <> 0);
+end;
+
+procedure InitializeWizard();
+begin
+  if not NeedsCompatibilityProgress() then
+    Exit;
+
+  UpdateProgressForm := CreateCustomForm(ScaleX(480), ScaleY(150), False, False);
+  UpdateProgressForm.Caption := ExpandConstant('{cm:UpdateProgressTitle}');
+  UpdateProgressForm.Position := poScreenCenter;
+
+  UpdateProgressLabel := TNewStaticText.Create(UpdateProgressForm);
+  UpdateProgressLabel.Parent := UpdateProgressForm;
+  UpdateProgressLabel.Left := ScaleX(24);
+  UpdateProgressLabel.Top := ScaleY(22);
+  UpdateProgressLabel.Width := ScaleX(432);
+  UpdateProgressLabel.Height := ScaleY(42);
+  UpdateProgressLabel.AutoSize := False;
+  UpdateProgressLabel.WordWrap := True;
+  UpdateProgressLabel.Caption := ExpandConstant('{cm:UpdateProgressDescription}');
+
+  UpdateProgressBar := TNewProgressBar.Create(UpdateProgressForm);
+  UpdateProgressBar.Parent := UpdateProgressForm;
+  UpdateProgressBar.Left := ScaleX(24);
+  UpdateProgressBar.Top := ScaleY(82);
+  UpdateProgressBar.Width := ScaleX(432);
+  UpdateProgressBar.Height := ScaleY(18);
+  UpdateProgressBar.Min := 0;
+  UpdateProgressBar.Max := 100;
+
+  UpdatePercentLabel := TNewStaticText.Create(UpdateProgressForm);
+  UpdatePercentLabel.Parent := UpdateProgressForm;
+  UpdatePercentLabel.Left := ScaleX(24);
+  UpdatePercentLabel.Top := ScaleY(111);
+  UpdatePercentLabel.Width := ScaleX(432);
+  UpdatePercentLabel.Alignment := taCenter;
+  UpdatePercentLabel.Caption := ExpandConstant('{cm:UpdateProgressPhase}');
+end;
+
 function ShouldCreateDesktopIcon(): Boolean;
 begin
   Result :=
@@ -171,8 +229,17 @@ procedure CurStepChanged(CurStep: TSetupStep);
 var
   Index: Integer;
 begin
+  if (UpdateProgressForm <> nil) and (CurStep = ssInstall) then
+  begin
+    UpdateProgressForm.Show();
+    UpdateProgressForm.Update();
+  end;
+
   if CurStep = ssPostInstall then
   begin
+    if UpdateProgressForm <> nil then
+      UpdateProgressForm.Hide();
+
     for Index := 0 to GetArrayLength(LegacyInstallDirectories) - 1 do
       DelTree(LegacyInstallDirectories[Index], True, True, True);
 
@@ -181,6 +248,20 @@ begin
   end;
 end;
 
+procedure CurInstallProgressChanged(CurProgress, MaxProgress: Integer);
+var
+  Percent: Integer;
+begin
+  if (UpdateProgressForm = nil) or (MaxProgress <= 0) then
+    Exit;
+
+  Percent := (CurProgress * 100) div MaxProgress;
+  UpdateProgressBar.Position := Percent;
+  UpdatePercentLabel.Caption :=
+    ExpandConstant('{cm:UpdateProgressPhase}') + ' ' + IntToStr(Percent) + '%';
+  UpdateProgressForm.Update();
+end;
+
 function InitializeUninstall(): Boolean;
 var
   Choice: Integer;
diff --git a/scripts/check-ui-contract.ps1 b/scripts/check-ui-contract.ps1
index bcf1ef2..2758f71 100644
--- a/scripts/check-ui-contract.ps1
+++ b/scripts/check-ui-contract.ps1
@@ -10,6 +10,7 @@ $wpfCodePath = Join-Path $root 'dotnet\AstroForge.App\MainWindow.xaml.cs'
 $avaloniaCodePath = Join-Path $root 'dotnet\AstroForge.CrossPlatform\MainWindow.axaml.cs'
 $wpfAdapterPath = Join-Path $root 'dotnet\AstroForge.App\Services\WpfLocalizationAdapter.cs'
 $avaloniaAdapterPath = Join-Path $root 'dotnet\AstroForge.CrossPlatform\AvaloniaLocalizationAdapter.cs'
+$installerPath = Join-Path $root 'installer\AstroProjectForge.iss'
 
 function Read-Raw([string]$Path) {
     if (-not (Test-Path -LiteralPath $Path)) { throw "File mancante: $Path" }
@@ -44,6 +45,7 @@ $wpfCode = Read-Raw $wpfCodePath
 $avaloniaCode = Read-Raw $avaloniaCodePath
 $wpfAdapter = Read-Raw $wpfAdapterPath
 $avaloniaAdapter = Read-Raw $avaloniaAdapterPath
+$installer = Read-Raw $installerPath
 
 $contracts = @{
     'WPF preview keyboard handler' = $wpfXaml.Contains('PreviewKeyDown="Window_PreviewKeyDown"')
@@ -54,6 +56,7 @@ $contracts = @{
     'Save and Save As behavior (WPF)' = $wpfCode.Contains('SaveProject(bool saveAs)')
     'Save and Save As behavior (Avalonia)' = $avaloniaCode.Contains('SaveProjectAsync(bool saveAs)')
     'Visible Windows update progress' = $wpfCode.Contains('startInfo.ArgumentList.Add("/SILENT")') -and -not $wpfCode.Contains('startInfo.ArgumentList.Add("/VERYSILENT")')
+    'Visible progress from legacy updaters' = $wpfCode.Contains('startInfo.ArgumentList.Add("/APFVISIBLE=1")') -and $installer.Contains('CurInstallProgressChanged') -and $installer.Contains('NeedsCompatibilityProgress')
 }
 
 $failed = @($contracts.GetEnumerator() | Where-Object { -not $_.Value } | ForEach-Object Key)
diff --git a/version.json b/version.json
index 8b62a0e..1b2b99c 100644
--- a/version.json
+++ b/version.json
@@ -1,5 +1,5 @@
 {
-  "version": "1.1.1",
+  "version": "1.1.2",
   "channel": "Stable",
   "releaseDate": "2026-07-28",
   "minimumWindowsBuild": 19045