How to install kitkat 4.4.4 over Android 4.2.2

Question

In my SONY Xperia Z current version of android version is 4.2.2. I want to remove this OS totally (as we remove windows OS to install newer) and install new Kitkat 4.4.4 version. I have followed this post at lifehacker, downloaded kitkat, but things are not working for me. Can anyone suggest me any solution of a brand new OS in my Android phone (my phone already rooted)?


— bipul mohanto | Sources

Answer

— Hector Jaimes | Sources

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