Updating iatkos 5i
The same author also covers the hardware components that he selected for his Hackintosh, which he has named "Valtur." Update Hackintosh High Sierra, the Painless Way - How to update from one version of mac OS High Sierra to another with troubleshooting suggestions if it doesn't go smoothly, also from Mac Observer.
mac OS High Sierra USB Installer - An easy-to-follow tutorial to create a bootable USB installer for mac OS High Sierra using the respected Disk Maker X app courtesy of Other World Computing.
"COMBO" UPDATE If your installation of OSX is corrupted or damaged, you may want to start by downloading and installing the appropriate "combo" update.
It contains all the updates since the first release of Snow Leopard (thus the clever name).
Note: after installing the update, don't delete it immediately; if it doesn't fix your problem, you may want to reinstall OSX and perhaps apply the "combo" again. Instructions and downloads are below (but if you're running Lion Server, see afterwards, per Verify or Repair Disk Permissions.
Upgrade from OS X El Capitan to mac OS Sierra - A short tutorial to upgrade a Hackintosh running OS X El Capitan (10.11) to mac OS Sierra (10.12) using the Clover application.
Install mac OS Sierra on PCs Guide - If the "official" tutorial isn't sufficient, this quality tutorial from the long term Microsoft-focused site Redmond Pie also covers how to install mac OS Sierra on a PC using Unibeast.
The procedures are somewhat different depending on what "major version" of OSX you're on, Lion, Snow Leopard or Leopard (sorry, earlier versions of OSX aren't covered here).
(If you're not sure what version of OSX you're running, click here).
Instructions and downloads are here: (Note: there's a separate afterwards, per Verify or Repair Disk Permissions.