fix: block update if not connected (#36641)

selfdrive/ui/mici/layouts/settings/device.py

@@ -169,6 +169,11 @@ class UpdateOpenpilotBigButton(BigButton):
       self.set_enabled(True)
 
   def _handle_mouse_release(self, mouse_pos: MousePos):
+    if not system_time_valid():
+      dlg = BigDialog(tr("Please connect to Wi-Fi to update"), "")
+      gui_app.set_modal_overlay(dlg)
+      return
+
     self.set_enabled(False)
     self._state = UpdaterState.WAITING_FOR_UPDATER
     self.set_icon(self._txt_update_icon)