Stopping at Downloading ATV update file

I’m trying to create a flash but whne it gets to downloading the ATV update file it either gets part way down (43% has been my maximum) or does not load at all. I’m connected to the net fine as I’m typing this !!
Any suggestions where i can get this file without going through the app?

Download the 2.4 DMG file manually and then have aTVFlash locate the file.

http://mesu.apple.com/data/OS/061-6242.20090624.Aq20P/2Z694-5660-029.dmg