Where is the link for update ?! (Photoshop CS6, win 7)
You are supposed to use the Updates item from the Help menu. There is no official link.
However, you can usually download one of the packages from a link here: http://blogs.adobe.com/crawlspace/2011/03/keeping-photoshop-up-to-date.html#notconnected but make sure you get the right one.