The picture is right. There is a very very tiny tab that needs to be lifted, so the socket releases the flex cable. It's barely noticeable but it's there. After replacing the home button you connect the new flex cable and then you lower the socket tab again to secure it. I'm sorry you broke yours :-/

It took me 2h30m. It's working like new. Just be gentle when handling ribbons and connectors. Thanks iFixit!