diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1d5a1c380..d4f25f01e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,8 @@
 - Verify host's disk space before downloading macOS Installers
 - Remove duplicate OS builds in macOS downloader
   - Avoids Apple's odd bug of publishing 2 different 12.5.1 products
+- Implement deeper macOS installer parsing
+  - Provides better version detection than Apple provides in .app
 
 
 - Ventura Specific Updates:
diff --git a/gui/gui_main.py b/gui/gui_main.py
index 6c2b310d3..4e8cb8cbe 100644
--- a/gui/gui_main.py
+++ b/gui/gui_main.py
@@ -1678,7 +1678,7 @@ class wx_python_gui:
         self.header.SetFont(wx.Font(18, wx.FONTFAMILY_DEFAULT, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_BOLD))
         self.header.Centre(wx.HORIZONTAL)
         # Subheader: Installers found in /Applications
-        self.subheader = wx.StaticText(self.frame, label="Installers found in Applications folder")
+        self.subheader = wx.StaticText(self.frame, label="Searching for Installers in /Applications")
         self.subheader.SetFont(wx.Font(12, wx.FONTFAMILY_DEFAULT, wx.FONTSTYLE_NORMAL, wx.FONTWEIGHT_NORMAL))
         self.subheader.SetPosition(
             wx.Point(
@@ -1688,12 +1688,46 @@ class wx_python_gui:
         )
         self.subheader.Centre(wx.HORIZONTAL)
 
+        self.available_installers = None
+
+        # Spawn thread to get list of installers
+        def get_installers():
+            self.available_installers = installer.list_local_macOS_installers()
+
+        thread_get_installers = threading.Thread(target=get_installers)
+        thread_get_installers.start()
+
+        # Progress bar
+        self.progress_bar = wx.Gauge(self.frame, range=100, size=(self.WINDOW_WIDTH_MAIN - 50, -1))
+        self.progress_bar.SetPosition(
+            wx.Point(
+                self.header.GetPosition().x,
+                self.subheader.GetPosition().y + self.subheader.GetSize().height + 10
+            )
+        )
+        self.progress_bar.Centre(wx.HORIZONTAL)
+        self.progress_bar.Pulse()
+
+        # Set window size
+        self.frame.SetSize(-1, self.progress_bar.GetPosition().y + self.progress_bar.GetSize().height + 40)
+
+        while thread_get_installers.is_alive():
+            self.pulse_alternative(self.progress_bar)
+            wx.App.Get().Yield()
+
+        # Remove progress bar
+        self.progress_bar.Destroy()
+
+        self.subheader.SetLabel("Installers found in Applications folder")
+        self.subheader.Centre(wx.HORIZONTAL)
+
+        available_installers = self.available_installers
+
         i = -7
-        available_installers = installer.list_local_macOS_installers()
         if available_installers:
-            print("Installer found")
+            print("Installer(s) found:")
             for app in available_installers:
-                print(f"{available_installers[app]['Short Name']}: {available_installers[app]['Version']} ({available_installers[app]['Build']})")
+                print(f"- {available_installers[app]['Short Name']}: {available_installers[app]['Version']} ({available_installers[app]['Build']})")
                 self.install_selection = wx.Button(self.frame, label=f"{available_installers[app]['Short Name']}: {available_installers[app]['Version']} ({available_installers[app]['Build']})", size=(320, 30))
                 i = i + 25
                 self.install_selection.SetPosition(
diff --git a/resources/installer.py b/resources/installer.py
index a79b5daa7..b5f006a4c 100644
--- a/resources/installer.py
+++ b/resources/installer.py
@@ -47,6 +47,14 @@ def list_local_macOS_installers():
                             can_add = False
                     else:
                         can_add = True
+
+                    # Check SharedSupport.dmg's data
+                    results = parse_sharedsupport_version(Path("/Applications") / Path(application)/ Path("Contents/SharedSupport/SharedSupport.dmg"))
+                    if results[0] is not None:
+                        app_sdk = results[0]
+                    if results[1] is not None:
+                        app_version = results[1]
+
                     if can_add is True:
                         application_list.update({
                             application: {
@@ -64,6 +72,46 @@ def list_local_macOS_installers():
     application_list = {k: v for k, v in sorted(application_list.items(), key=lambda item: item[1]["Version"])}
     return application_list
 
+def parse_sharedsupport_version(sharedsupport_path):
+    detected_build =     None
+    detected_os =        None
+    sharedsupport_path = Path(sharedsupport_path)
+
+    if not sharedsupport_path.exists():
+        return (detected_build, detected_os)
+
+    if not sharedsupport_path.name.endswith(".dmg"):
+        return (detected_build, detected_os)
+
+
+    # Create temporary directory to extract SharedSupport.dmg to
+    with tempfile.TemporaryDirectory() as tmpdir:
+        output = subprocess.run(
+            [
+                "hdiutil", "attach", "-noverify", sharedsupport_path,
+                "-mountpoint", tmpdir,
+                "-nobrowse",
+            ],
+            stdout=subprocess.PIPE, stderr=subprocess.STDOUT
+        )
+        if output.returncode != 0:
+            return (detected_build, detected_os)
+
+        ss_info = Path("SFR/com_apple_MobileAsset_SFRSoftwareUpdate/com_apple_MobileAsset_SFRSoftwareUpdate.xml")
+
+        if Path(tmpdir / ss_info).exists():
+            plist = plistlib.load((tmpdir / ss_info).open("rb"))
+            if "Build" in plist["Assets"][0]:
+                detected_build = plist["Assets"][0]["Build"]
+            if "OSVersion" in plist["Assets"][0]:
+                detected_os = plist["Assets"][0]["OSVersion"]
+
+        # Unmount SharedSupport.dmg
+        output = subprocess.run(["hdiutil", "detach", tmpdir], stdout=subprocess.PIPE, stderr=subprocess.STDOUT)
+
+    return (detected_build, detected_os)
+
+
 def create_installer(installer_path, volume_name):
     # Creates a macOS installer
     # Takes a path to the installer and the Volume