ishan@ishan:~/new_patches/newsugar/mainline/src/jarabe/model$ git diff
diff --git a/src/jarabe/model/bundleregistry.py b/src/jarabe/model/bundleregistry.py
index 699e339..16d80e0 100644
--- a/src/jarabe/model/bundleregistry.py
+++ b/src/jarabe/model/bundleregistry.py
@@ -373,9 +373,24 @@ class BundleRegistry(gobject.GObject):
                 return True
         return False

+    def alert_confirmation(self):
+        msg = _('Do you want to downgarde?')
+        dialog = self.gtk.MessageDialog(parent=self.widgets['window'],
+                                        type=self.gtk.MESSAGE_WARNING,
+                                        buttons=self.gtk.BUTTONS_NONE,
+                                        message_format=msg)
+
+        dialog.add_button(self.gtk.STOCK_CANCEL, self.gtk.RESPONSE_CLOSE)
+
+        dialog.show_all()
+        response = dialog.run()
+        dialog.hide()
+
+        return response == self.gtk.RESPONSE_YES
+
     def install(self, bundle, uid=None):
         activities_path = env.get_user_activities_path()
-
+        self.alert_confirmation()
         for installed_bundle in self._bundles:
             if bundle.get_bundle_id() == installed_bundle.get_bundle_id() and \
                     bundle.get_activity_version() <= \