I am talking about the "update V4.2 base" icon that will appear on your desktop. I've seen it recommended and I did the  "update or (activate)" thing after installing each new morph pack I installed after installing V4.2.  Morphs++, creature, Aiko4 ect.
I certainly hope Daz will get M4 available without all the mess and confussion this V4 character has caused. Maybe it's taking so long for M4 because they plan on getting it right the first time. Like I said I can only hope.