H955 root

Currently running root on 5.01 however wanted to upgrade to 5.1.1 root as I've heard its has much better performance, first question is do I need to unroot and upgrade via ota update then root or can I go straight to rooted 5.1.1? Second question is whether one of the people working on the root could upload a separate thread with detailed instructions of how to root as I find it almost impossible to navigate my way through the development thread, sorry if this seems demanding.
Thanks for the help!

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