This pack is being offered as a legacy option if the other pack included (Unofficial Service Pack 3) fails.

Autopatcher is older, less user-friendly, and constantly reboots your computer somewhere around 7-15 times only minutes apart from each other to complete all of it's updates, which isn't great for people running Win98 on original hardware (though perhaps not as bad if your PSU is new and your motherboard has been recapped in recent years with high quality capacitors).

It does however install a decent network connection manager onto your computer, which USP3 does not.