I found it offered under Live Updater but didn't accept the download since I couldn't find out enough about it. You can see more information on my post from earlier today under the topic s7-391 wifi problems. If it works, please do let us know!
Member RevoMaxx is quickly moving up the ranks of Acer Community. He joined us in September and is already making a difference. It's great to see new members like him make a difference only after a few months. Thanks RevoMaxx!