I've got several separate Magento installations using version 220.127.116.11
I need to update to 1.9.3. What is the 'official' method of updating? And what are the alternative methods, if any?
I normally update my versions of Magento using the update function in Plesk, but I don't think it supports Magento 1 any more (although I'm not 100% sure of this!)
If needed, I have access to my server via FTP, and I'm able to download Magento 1.9.3 from Magento Tech Resources but I'm not sure what I'm supposed to do with it once I've downloaded it.
Also, what problems have been found after updating to 1.9.3?
Due to extensions I use not being available (yet), I am NOT looking to upgrade or migrate to Magento 2.0 at this time. I just need to know about upgrading to 1.9.3.