Admin user can’t update WP

I have a site running WP 3.3.2. The backend shows a bar saying “WordPress 3.5 is available! Please notify the site administrator.”

Funny thing is that I’m logged in with an admin user, I double checked that. When trying to access the update page (at wp-admin/update-core.php) I get this error:

“You do not have sufficient permissions to access this page.”

Any hints on what could be going on here?
Thanks.

Try to make a new admin user in the db.

Follow these steps you should be able to create a new admin user, then update and then you can give your old user admin rights again. Or use the new user.

Your old user might have wrong setting in the DB

http://www.dnawebagency.com/how-to-add-an-admin-user-to-the-wordpress-database