Add more dex entries

lib/UpdateCheck.dart

@@ -39,6 +39,22 @@ class _UPDCheck extends State<UpdateCheck> {
     super.initState();
   }
 
+  @override
+  void didChangeDependencies() {
+    SessionData.callbacks.updateCheckPage = () async {
+      setState(() {});
+    };
+
+    super.didChangeDependencies();
+  }
+
+  @override
+  void dispose() {
+    SessionData.callbacks.updateCheckPage = null;
+
+    super.dispose();
+  }
+
   @override
   Widget build(BuildContext context) {
     return Scaffold(