Hi guys,

I need some guidance here please. I have installed Zencart v1.5.0 (via server install script) and after doing quite a bit of work to get things looking like I want it, I started setting up payment modules yesterday and encountered a problem with one of the modules..

The problem I have, is that the main payment module I will be using "Payfast" does not seem to work on this version of Zencart. I have successfully used it with earlier versions of Zencart. I have subsequently contacted Payfast and they have informed me that I have to downgrade Zencart to v1.3.9 in order use the module since their module will only be compatible with Zencart v1.5.0 in a few months time.

Since I need to have this payment module working, I definitely need to downgrade now, but do not have a clue as how to do this manually.
I have made back-ups of sql and have downloaded it already.
Do I simply manually upload v1.3.9 files via ftp and override v1.5.0 files?