"You cannot update this software since you have not owned the major version of this software."

I've also had this problem for the last month for my iPhone, thinking that it was because I switched country region in order to use these Canadian iTunes gift cards I got (still the most likely reason). But today I decided to just give it another try for the heck of it and they all started updating! May be because Apple fixed this problem, or may be because I re-formatted my computer and accidentally reverted all my data on my computer via Time Machine to several months ago before this problem started happening. I do have two different apple ID's (one is @me.com and another @gmail.com), so it could be an ID-related problem, although re-checking all my accounts on the iPhone everything is still signed-in the same way with when I was having the problem... so it makes me think Apple fixed it? Maybe give it another try... good luck.