From your home-screen tab down and select File Manager.
Tab down and select Add Source.
Now type the following;
http://kodi.metalkettle.co and press Done.
You now need to name it, we’ve chosen Metal but you can name it anything you want, now select Done.
Tab up until you see MetalKettles repository that you’ve just installed and Select.
Drop down and Select the zip file named MetalKettle.
Installation will take 10 seconds. Once completed you can now enjoy the fruits of what MetalKettle has to offer.