I'm also having an issue..

I have tried the automatic way, through clicking the link within the message in the admin section, and using 'network install' I click Continue.
It has a loading bar and says 'downloading'. Then it just goes back to the original 'network install' page with a Continue button again - It's appeared to have done nothing. Have clicked Continue again, it downloads again.. and then nothing.

I then tried to do it through 'extension upload'. It uploads, then does nothing.

So, I then tried doing it manually.
Changed the SQL successfully, uploaded the files to an 'upgrade' folder within /admin/controller/common, and changed the head.php with the 'include' line on line 30 to show "include('upgrade/upgrade.php');". I then reloaded the admin page, logged in, and it does nothing (It brings up the wizard, like it always has on this version).

I'm at a loss as to what to do now?

I've tried putting the files in different locations (even within the 'common' folder itself with the head.php etc in case I was stuffing up the locations within the 'include' command.

Anyone able to help?
Softalicious unfortunately doesn't have an 'upgrade' button either.
There are no logs consistent with this either.