Quote - You have to pay for A4, either through purchasing her through the Daz store, or by paying for the Premium club membership.

V4.2 is a for purchase item:
http://www.daz3d.com/i.x/shop/itemdetails/-/?item=4783
$29.95, $1.99 for PClub. You can get her for free at Artzone, but you have to hand over to Daz a bunch of private information (that they'll no doubt sell to a data mining firm)
Why does Daz need to know my dating status anyways?

So lie. You are under no obligation to fill out all or even correct information.

By the way, V4.0 was free a long time ago. You get her updates for free.

I think you want free with no strings attached. Never is going to happen.