Hey thanks...I have read the instructions and finally installed Mac OS X high Sierra 10.13.2 but guide me how to update to 10.13.3 and future gpu upgrades.Thanks.Have you checked the guides for installation? Read them and give it a try. Come back if you have issues and then we can help you more specifically. What OS is installed on your Mac Pro? If you already have High Sierra you will have to find a way to download the full installer. It would be easier if you were running an earlier OS. But there are ways of doing this nonetheless.
The Rules said:Profiles need to contain at least your primary system to assist others with helping you.
macOS 10.13.3 UpdateHey thanks...I have read the instructions and finally installed Mac OS X high Sierra 10.13.2 but guide me how to update to 10.13.3 and future gpu upgrades.