You don't have to download from Mega, It's now on torrents, DropBox, Google Drive, and OneDrive.

The update server was overloaded when I tried the official update, and I got disconnected 4 times during downloading before I gave up, around the time the patch started being distributed via other means. It effectively was the same as my normal method of installing the game and updates, from a backup of my FFXI folder. This guy just captured the folder structure with the files that were updated in the patch yesterday. They have been vetted on plenty of FFXI forums and malware scans as not being altered files vs the ones downloaded via POL, because they are the ones downloaded via POL.

I don't know why you wouldn't use the better option, when vetted by the community. The source of the files doens't matter if they are the exact same files you would otherwise get, and they solve the problem faster than SE can.