Can't update to latest Concrete5

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My website is no longer available for me to edit.

Message I received from Machighway support:
Older versions of Concrete5 do not work correctly with PHP 5.4, so you will need to upgrade your Concrete5 installation.

Problem: Site would not allow me to upgrade (couldn't find something?)and I have no idea how to fix this. Something about permissions, as I read in another post?

How am I going to get into my site?

Cynthia12
 
SheldonB replied on at Permalink Reply
SheldonB
can you lower your php version in your cpanel back to what it was?
Cynthia12 replied on at Permalink Reply
Cynthia12
Have been messing around with this for a couple of days - went to cpanel and can't figure out how one can change php back as you suggested. I found php my administration - didn't know what I could do with it.