diff --git a/internal_filesystem/builtin/apps/com.micropythonos.osupdate/assets/osupdate.py b/internal_filesystem/builtin/apps/com.micropythonos.osupdate/assets/osupdate.py
index 0e547c33..dee8933c 100644
--- a/internal_filesystem/builtin/apps/com.micropythonos.osupdate/assets/osupdate.py
+++ b/internal_filesystem/builtin/apps/com.micropythonos.osupdate/assets/osupdate.py
@@ -29,7 +29,8 @@ class OSUpdate(Activity):
         self.current_version_label.set_text(f"Installed OS version: {mpos.info.CURRENT_OS_VERSION}")
         self.force_update = lv.checkbox(self.main_screen)
         self.force_update.set_text("Force Update")
-        self.force_update.add_event_cb(lambda *args: self.force_update_clicked(), lv.EVENT.CLICKED, None)
+        self.force_update.add_event_cb(lambda *args: self.force_update_clicked(), lv.EVENT.VALUE_CHANGED, None)
+        #self.force_update.add_event_cb(lambda e: mpos.ui.print_event(e), lv.EVENT.ALL, None)
         self.force_update.align_to(self.current_version_label, lv.ALIGN.OUT_BOTTOM_LEFT, 0, mpos.ui.pct_of_display_height(5))
         self.install_button = lv.button(self.main_screen)
         self.install_button.align(lv.ALIGN.TOP_RIGHT, 0, 0)
diff --git a/internal_filesystem/lib/mpos/ui/__init__.py b/internal_filesystem/lib/mpos/ui/__init__.py
index 9bb3ef9d..578f8804 100644
--- a/internal_filesystem/lib/mpos/ui/__init__.py
+++ b/internal_filesystem/lib/mpos/ui/__init__.py
@@ -144,6 +144,27 @@ def get_event_name(event_code):
     return EVENT_MAP.get(event_code, f"Unknown event {event_code}")
 
 
+def print_event(event):
+    global canvas
+    event_code=event.get_code()
+    #print(f"got event {event_code}")
+    # Ignore:
+    # =======
+    # 19: HIT_TEST
+    # COVER_CHECK
+    # DRAW_MAIN
+    # DRAW_MAIN_BEGIN
+    # DRAW_MAIN_END
+    # 31: DRAW_POST_BEGIN
+    # 32: DRAW_POST
+    # 33: DRAW_POST_END
+    # 39: CHILD_CHANGED
+    # 52: GET_SELF_SIZE
+    if event_code not in [19,23,25,26,27,28,29,30,31, 32, 33, 39,49, 52]:
+        name = get_event_name(event_code)
+        target_obj=event.get_target_obj()
+        print(f"{target_obj} got event code={event_code}, name={name}")
+
 def close_top_layer_msgboxes():
     """
     Iterate through all widgets in lv.layer_top() and close any lv.msgbox instances.