I've got several separate Magento installations using version

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.

closed as primarily opinion-based by 7ochem, Raphael at Digital Pianism, Qaisar Satti, Amit Bera, brentwpeterson Oct 18 '16 at 20:39

Many good questions generate some degree of opinion based on expert experience, but answers to this question will tend to be almost entirely based on opinions, rather than facts, references, or specific expertise. If this question can be reworded to fit the rules in the help center, please edit the question.

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    @TejabhagavanKollepara Going from one version of 1.x to another is a whole different beast than going from 1.x to 2.x. – Joseph Leedy Oct 17 '16 at 13:06
  • When? Beste method? All primarily opinion based questions IMO – 7ochem Oct 17 '16 at 13:09
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    @7ochem Surely the whole point of StackExchange is to ask for expert opinions! – Phil Stewart Oct 17 '16 at 14:54
  • StackExchange is a Q&A where questions should be specific so there will be one or two best straight answers popping up. Asking opinion-based questions is generally off-topic because it opens up to a flood of answers of everyone sharing his/her opinion on the matter. At the end, the question is still not answered straight forward. meta.stackoverflow.com/q/252854/1306684 or offical don't ask: magento.stackexchange.com/help/dont-ask – 7ochem Oct 17 '16 at 15:18
  • @7ochem One person's fact is another person's opinion, or to put it another way "what is truth?". The purpose of my post on here was to get general advice and information regarding upgrading to 1.9.3. At the moment, I'm totally without a clue. All I know is where the zip file is. I don't know what to do with it, or whether it's a good idea to install it or not. Can you advise? – Phil Stewart Oct 18 '16 at 9:07