No Theme Update Option Displayed for Dawn Theme

[mooseshoes]

Hello.  I'm currently using Dawn 4.0 and I noticed that there are versions now up to 6.0.X.   I was expecting to see an update link displayed but it doesn't show.  Is there a way to make it appear?  I have downloaded the latest theme file to my library.  Thoughts?

Thanks in advance.

[csw]

I am having the same problem, wanting to update from 5.0 to 7.0. 

Can anyone advise?