MacOS – How to upgrade OSX on MacBook Pro

macossoftware-update

I need to upgrade my MacBook Pro 15 inch (2012) OS X from 10.11.6 to 10.13.6 or later.
However, I have downloaded several updates for 10.13 all the way down to 10.12.6 and in every case it says I need to have a prior operation system such as 10.12 for 10.12.6 to be installed.

In other words I can't seem to find an OS X system that I can install because I don't have the latest system for the update. So are all these OS systems updates only that require a previous version? Apple's download website just shows updates.

Where can I find a complete new OS to download so I can apply updates?

Best Answer

Major releases aren‘t distributed as updates, they need to be downloaded from the Mac App Store:

Open the App Store application on your Mac
Search for „Mojave“
Install

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MacOS – Macbook Pro 17″ Thunderbolt won’t output to LCD

Based on your hard labor so far :) and that the problem is not the cable.....it is time to try the:

1) Restart the computer in Safe Mode with display attached (shut down and restart while holding down shift key).

The display will show up without distortion.

2) Change the display to desired preferences (dimensions and refresh rate).

3) Restart computer.

================================

Since you mentioned the messages during the download, lets consider following.

From Apple:

This could occur when a self-powered Thunderbolt device (other than a directly-connected Thunderbolt display) is connected to a Thunderbolt port while installing the update.

To resolve this issue:

Shutdown your computer.
Disconnect all Thunderbolt devices.
Wait 10 seconds.
If you are using a Mac mini with a Thunderbolt display, reconnect the Thunderbolt display directly to your computer via the Thunderbolt port. Do not connect other Thunderbolt devices at this time.
Restart your computer.
If the Thunderbolt Firmware Update 1.2 is offered, download and install it and restart your computer when asked. If the Thunderbolt Update is not offered, the update has installed correctly.
Reconnect all Thunderbolt devices.

Best Answer

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