Rather than flaming you for asking a question, I will actually try to help ya:)
What he is referring to is this hardware updater here: https://www.androidfilehost.com/?fid=95897840722643821
Or other people are flashing the newest cm12 rom, then ...
Here using cataclysm with the last ElementalX kernel. Best kernel I've ever tried on my N5, Battery drain is minimal and smooth as butter.
Thanks and all the best from Spain :)
Have you done a clean install or a dirty flash ?
Never mind, it's working flawlessly after reflashing.
I've been using this kernel for one day and I must say that it's... Awesome.
Just look my screenshots
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