In my case, update confirmation from wifi will not work either. More than two months after doing the update (and uploading confirmation through the website) the confirmation has never shown. Also, before I did the update via USB the car always said it was up to date, so updating by wifi was not possible. So in summary the website will always show it is not up to date and the car will always show it is up to date. BTW, checked again today and the car says up to date and it still has 22200.