Problem WordPress Update can’t UPDATE

Hello,

I’am using a old version of wordpress and wish to update it with the 3.5.2 version. When i wish to make the update, i arrive on the url of my 1st old website with an expirated domain (‘expired domain name’/wp-admin/network/update-core.php)

So i looked up in my Webspace to see if an old folder still in there. Unfortunately, only the new website folder exist within all the data. This old website still appear on my ‘ My Websites’ page even my web hoster provider isn’t hosting anymore this adress and i have not any traces on in my database.

How i can be able to update my wordpress and ask him to go to my new website adress and not trying to go through my old website url. Thank you for your help all !

The page I need help with: [log in to see the link]