Post in correct section next time. This is the DOWNLOAD only section.
Try using a download manager such as Internet Download Manager.
Also you can download the previous set-up, and download the updates throuth their launcher.
or you can try replacing the files instead of updating
"Previous set up"
iGunz Installer [03242008]
"Up to date, original files"
Original Files(4.9.08)
Thread Moved.