Cant Update Unity to 4.3.4

hey
I’m trying to purchase an asset on the asset store and when i go to buy it its says
“Needs Unity upgrade to version 4.3.4”
so i went to help tab > check for updates
and it says “Unity editor is up to date. Currently installed version is 4.3.2f1”
HOW do u update
Also i have unity Pro with a student licence could that be whats doing it???

Please help ~Scott

go to transfer unity student licence after manual update - Unity Answers