diff --git a/qt/snigdhaosblackbox.h b/qt/snigdhaosblackbox.h
index 57a455f..f3d107a 100644
--- a/qt/snigdhaosblackbox.h
+++ b/qt/snigdhaosblackbox.h
@@ -31,11 +31,22 @@ public:
     SnigdhaOSBlackBox(QWidget *parent = nullptr, QString state = "WELCOME");
     ~SnigdhaOSBlackBox();
 
+private slots:
+    void on_textWidget_buttonBox_clicked(QAbstractButton* button);
+    void on_selectWidget_buttonBox_clicked(QAbstractButton* button);
+
 private:
     Ui::SnigdhaOSBlackBox *ui;
     QDateTime executable_modify_date;
     State currentState;
 
     void doInternetUpRequest();
+    void doUpdate();
+    void doApply();
+    void populateSelectWidget();
+    void populateSelectWidget(QString filename, QString label);
+    void updateState(State state);
+    void updateState(QString state);
+    void relaunchSelf(QString param);
 };
 #endif // SNIGDHAOSBLACKBOX_H