From this detailed guide, you can learn how to install FenSkeleton Addon On Your Kodi.
The Fen Skeleton addon is a Fork FenLightAM Kodi addon. The main focus is on very fast performance.
Therefore, some functions have been removed, which most Kodi users do not need in most cases. However, standard features such as support for Debrid services, EasyNews and Trakt are still available.
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this installation guide applies to all compatible devices including Amazon Firestick, Fire TV, Android & iOS, Mac, Windows, Android TV, Android Boxes, etc
How To Install Fen Skeleton Kodi Addon
- Open Kodi
- Be sure to have the Unknown Source box checked as Kodi requires this before installing 3rd party add-ons.
- HOME Screen > Add-ons > Settings button 
> Add-ons > Enable Unknown Sources.
- From your Home Click Settings (cog icon top left)
- Click File Manager
- Click None
-Type in the following EXACTLY https://fenskeleton.github.io
- Click OK
- Click back on your remote/keyboard
- Click Add-ons
- Click Install from Zip File
- Click fenskeleton
- Click plugin.video.fenskeleton-x.x.zip.
- Wait for Add-On Enabled Notification
That's it! You can now find you addon from main menu > Add-ons, enjoy.