diff --git a/inno_setup.iss b/inno_setup.iss
index e74dc446..56f998a7 100644
--- a/inno_setup.iss
+++ b/inno_setup.iss
@@ -1,116 +1,133 @@
-#define sourcepath "build\exe.win-amd64-3.8\"
-#define MyAppName "BerserkerMultiWorld"
-#define MyAppExeName "BerserkerMultiClient.exe"
-#define MyAppIcon "icon.ico"
-
-[Setup]
-; NOTE: The value of AppId uniquely identifies this application.
-; Do not use the same AppId value in installers for other applications.
-AppId={{6D826EE0-49BE-4B36-BACE-09C6971CD85C}}
-AppName={#MyAppName}
-AppVerName={#MyAppName}
-DefaultDirName={commonappdata}\{#MyAppName}
-DisableProgramGroupPage=yes
-OutputDir=setups
-OutputBaseFilename=Setup {#MyAppName}
-Compression=lzma2
-SolidCompression=yes
-LZMANumBlockThreads=8
-ArchitecturesInstallIn64BitMode=x64
-ChangesAssociations=yes
-ArchitecturesAllowed=x64
-AllowNoIcons=yes
-SetupIconFile={#MyAppIcon}
-UninstallDisplayIcon={app}\{#MyAppExeName}
-LicenseFile= LICENSE
-WizardStyle= modern
-SetupLogging=yes
-
-[Languages]
-Name: "english"; MessagesFile: "compiler:Default.isl"
-
-[Tasks]
-Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}";
-
-
-[Dirs]
-NAME: "{app}"; Flags: setntfscompression; Permissions: everyone-modify users-modify authusers-modify;
-
-[Files]
-Source: "{code:GetROMPath}"; DestDir: "{app}"; DestName: "Zelda no Densetsu - Kamigami no Triforce (Japan).sfc"; Flags: external
-Source: "{#sourcepath}*"; Excludes: "*.key, *.log, *.hpkey"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
-Source: "vc_redist.x64.exe"; DestDir: {tmp}; Flags: deleteafterinstall
-; NOTE: Don't use "Flags: ignoreversion" on any shared system files
-
-[Icons]
-Name: "{group}\{#MyAppName} Folder"; Filename: "{app}";
-Name: "{group}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}";
-Name: "{commondesktop}\{#MyAppName} Folder"; Filename: "{app}"; Tasks: desktopicon
-Name: "{commondesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: desktopicon
-
-[Run]
-Filename: "{tmp}\vc_redist.x64.exe"; Parameters: "/passive /norestart"; Check: IsVCRedist64BitNeeded; StatusMsg: "Installing VC++ redistributable..."
-; Filename: "{app}\{#MyAppExeName}"; Description: "{cm:LaunchProgram,{#StringChange(MyAppName, '&', '&&')}}"; Flags: nowait postinstall skipifsilent
-
-[UninstallDelete]
-Type: dirifempty; Name: "{app}"
-
-[Registry]
-
-Root: HKCR; Subkey: ".bmbp";                                 ValueData: "{#MyAppName}patch";        Flags: uninsdeletevalue; ValueType: string;  ValueName: ""
-Root: HKCR; Subkey: "{#MyAppName}patch";                     ValueData: "{#MyAppName} Patch";       Flags: uninsdeletekey;   ValueType: string;  ValueName: ""
-Root: HKCR; Subkey: "{#MyAppName}patch\DefaultIcon";         ValueData: "{app}\{#MyAppExeName},0";                           ValueType: string;  ValueName: ""
-Root: HKCR; Subkey: "{#MyAppName}patch\shell\open\command";  ValueData: """{app}\{#MyAppExeName}"" ""%1""";                  ValueType: string;  ValueName: ""
-
-
-
-[Code]
-// See: https://stackoverflow.com/a/51614652/2287576
-function IsVCRedist64BitNeeded(): boolean;
-var
-  strVersion: string;
-begin
-  if (RegQueryStringValue(HKEY_LOCAL_MACHINE,
-    'SOFTWARE\Microsoft\VisualStudio\14.0\VC\Runtimes\x64', 'Version', strVersion)) then
-  begin
-    // Is the installed version at least 14.24 ? 
-    Log('VC Redist x64 Version : found ' + strVersion);
-    Result := (CompareStr(strVersion, 'v14.24.28127.4') < 0);
-  end
-  else
-  begin
-    // Not even an old version installed
-    Log('VC Redist x64 is not already installed');
-    Result := True;
-  end;
-end;
-
-var ROMFilePage: TInputFileWizardPage;
-var R : longint;
-
-procedure InitializeWizard();
-begin
-  ROMFilePage :=
-    CreateInputFilePage(
-      wpLicense,
-      'Select ROM File',
-      'Where is your Zelda no Densetsu - Kamigami no Triforce (Japan).sfc located?',
-      'Select the file, then click Next.');
-
-  ROMFilePage.Add(
-    'Location of ROM file:',         
-    'SNES ROM files|*.sfc|All files|*.*', 
-    '.sfc');                             
-end;
-
-function GetROMPath(Param: string): string;
-begin
-  if Assigned(RomFilePage) then
    begin
-      R := CompareStr(GetMD5OfFile(ROMFilePage.Values[0]), '03a63945398191337e896e5771f77173')
-      if R <> 0 then
-        MsgBox('ROM validation failed. Very likely wrong file.', mbInformation, MB_OK);
  
-      Result := ROMFilePage.Values[0]
-    end
-  else
-    Result := '';
- end;
+#define sourcepath "build\exe.win-amd64-3.8\"
+#define MyAppName "BerserkerMultiWorld"
+#define MyAppExeName "BerserkerMultiClient.exe"
+#define MyAppIcon "icon.ico"
+
+[Setup]
+; NOTE: The value of AppId uniquely identifies this application.
+; Do not use the same AppId value in installers for other applications.
+AppId={{6D826EE0-49BE-4B36-BACE-09C6971CD85C}}
+AppName={#MyAppName}
+AppVerName={#MyAppName}
+DefaultDirName={commonappdata}\{#MyAppName}
+DisableProgramGroupPage=yes
+OutputDir=setups
+OutputBaseFilename=Setup {#MyAppName}
+Compression=lzma2
+SolidCompression=yes
+LZMANumBlockThreads=8
+ArchitecturesInstallIn64BitMode=x64
+ChangesAssociations=yes
+ArchitecturesAllowed=x64
+AllowNoIcons=yes
+SetupIconFile={#MyAppIcon}
+UninstallDisplayIcon={app}\{#MyAppExeName}
+LicenseFile= LICENSE
+WizardStyle= modern
+SetupLogging=yes
+
+[Languages]
+Name: "english"; MessagesFile: "compiler:Default.isl"
+
+[Tasks]
+Name: "desktopicon"; Description: "{cm:CreateDesktopIcon}"; GroupDescription: "{cm:AdditionalIcons}";
+
+
+[Dirs]
+NAME: "{app}"; Flags: setntfscompression; Permissions: everyone-modify users-modify authusers-modify;
+
+[Files]
+Source: "{code:GetROMPath}"; DestDir: "{app}"; DestName: "Zelda no Densetsu - Kamigami no Triforce (Japan).sfc"; Flags: external
+Source: "{#sourcepath}*"; Excludes: "*.key, *.log, *.hpkey"; DestDir: "{app}"; Flags: ignoreversion recursesubdirs createallsubdirs
+Source: "vc_redist.x64.exe"; DestDir: {tmp}; Flags: deleteafterinstall
+; NOTE: Don't use "Flags: ignoreversion" on any shared system files
+
+[Icons]
+Name: "{group}\{#MyAppName} Folder"; Filename: "{app}";
+Name: "{group}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}";
+Name: "{commondesktop}\{#MyAppName} Folder"; Filename: "{app}"; Tasks: desktopicon
+Name: "{commondesktop}\{#MyAppName}"; Filename: "{app}\{#MyAppExeName}"; Tasks: desktopicon
+
+[Run]
+Filename: "{tmp}\vc_redist.x64.exe"; Parameters: "/passive /norestart"; Check: IsVCRedist64BitNeeded; StatusMsg: "Installing VC++ redistributable..."
+
+[UninstallDelete]
+Type: dirifempty; Name: "{app}"
+
+[Registry]
+
+Root: HKCR; Subkey: ".bmbp";                                 ValueData: "{#MyAppName}patch";        Flags: uninsdeletevalue; ValueType: string;  ValueName: ""
+Root: HKCR; Subkey: "{#MyAppName}patch";                     ValueData: "{#MyAppName} Patch";       Flags: uninsdeletekey;   ValueType: string;  ValueName: ""
+Root: HKCR; Subkey: "{#MyAppName}patch\DefaultIcon";         ValueData: "{app}\{#MyAppExeName},0";                           ValueType: string;  ValueName: ""
+Root: HKCR; Subkey: "{#MyAppName}patch\shell\open\command";  ValueData: """{app}\{#MyAppExeName}"" ""%1""";                  ValueType: string;  ValueName: ""
+
+
+
+[Code]
+// See: https://stackoverflow.com/a/51614652/2287576
+function IsVCRedist64BitNeeded(): boolean;
+var
+  strVersion: string;
+begin
+  if (RegQueryStringValue(HKEY_LOCAL_MACHINE,
+    'SOFTWARE\Microsoft\VisualStudio\14.0\VC\Runtimes\x64', 'Version', strVersion)) then
+  begin
+    // Is the installed version at least 14.24 ? 
+    Log('VC Redist x64 Version : found ' + strVersion);
+    Result := (CompareStr(strVersion, 'v14.24.28127.4') < 0);
+  end
+  else
+  begin
+    // Not even an old version installed
+    Log('VC Redist x64 is not already installed');
+    Result := True;
+  end;
+end;
+
+var ROMFilePage: TInputFileWizardPage;
+var R : longint;
+var rom: string;
+
+procedure InitializeWizard();
+begin
+  rom := FileSearch('Zelda no Densetsu - Kamigami no Triforce (Japan).sfc', WizardDirValue());
+  if Length(rom) > 0 then
+    begin
+      log('existing ROM found');
+      log(IntToStr(CompareStr(GetMD5OfFile(rom), '03a63945398191337e896e5771f77173')));
+      if CompareStr(GetMD5OfFile(rom), '03a63945398191337e896e5771f77173') = 0 then
+        begin
+        log('existing ROM verified');
+        exit;
+        end;
+      log('existing ROM failed verification');
+    end;
+  rom := ''
+  ROMFilePage :=
+    CreateInputFilePage(
+      wpLicense,
+      'Select ROM File',
+      'Where is your Zelda no Densetsu - Kamigami no Triforce (Japan).sfc located?',
+      'Select the file, then click Next.');
+
+  ROMFilePage.Add(
+    'Location of ROM file:',         
+    'SNES ROM files|*.sfc|All files|*.*', 
+    '.sfc');                             
+end;
+
+function GetROMPath(Param: string): string;
+begin
+  if Length(rom) > 0 then
+    Result := rom
+  else if Assigned(RomFilePage) then
+    begin
+      R := CompareStr(GetMD5OfFile(ROMFilePage.Values[0]), '03a63945398191337e896e5771f77173')
+      if R <> 0 then
+        MsgBox('ROM validation failed. Very likely wrong file.', mbInformation, MB_OK);
+  
+      Result := ROMFilePage.Values[0]
+    end
+  else
+    Result := '';
+ end;