How does one "update a server"?

While you're viewing your server submission, click the 'Update This Server" button. You will then need to make the necessary changes to the post and add an update log. Be warned though, blatant update log abuse will lead to your server submission being disabled or possible taken down all together. Only update it if you have a reason to do so. Also, you can only update your server submission every 24 hours. You should focus on establishing your server through the voting system and diamond system, rather than worrying about the recently updated list (My opinion, anyways).