Hi,
Its the same almost as upgrading blazer:
Make a folder in a ftp server called WLX and under this folder create a folder called addons. Place the upgrade.pak file in the addons directory and the .64m file in the wlx folder.
On the terminal set the ftp server location up to point to the ftp server.
Finally in the wlx folder create a text file called wlx.in and in it put the line autoload=1
Good Luck!
-TT