You can update the game via a torrent instead of using the actual updater. All you have to do is the following:

1. Download a bittorent client like Utorrent
2. Go to Start menu > Documents > My Games > Final Fantasy 14 > Downloads > FFXIV > 48eca647
3. Then you open up the meta file in the utorrent client.
4. Once it is done downloading you take the file you downloaded and place it in the patch folder I believe (I could be wrong about this last step but im pretty sure thats what you do.

NOTE: This is much faster than using the actual updater.