Hi i updated our store from CE 1.9.3.2 to CE1.9.3.3, using site grounds softaculous
However there seems to be a lot of bugs all of a sudden on one of the sites
i have another 3 sites that seems to have updated smoothly
I've read online the best solution is to overwrite the files with magento default files,
however i need a idiots guide to do this, because our website has had a lot of work done over the past 2 years and i don't want the custom work to be over written
what files should i over write from the Magento 1.9.3.3 version from online and how do i do it?
Is there a video online with complete instructions
Kind regards
Umair Iqbal