# macOS Big Sur update bricking various older Macs.

**URL:** <https://psychtoolbox.discourse.group/t/macos-big-sur-update-bricking-various-older-macs/3519>\
**Category:** Tips & Tricks\
**Tags:** osx\
**Created:** [November 17, 2020, 5:42am UTC](https://psychtoolbox.discourse.group/t/macos-big-sur-update-bricking-various-older-macs/3519 "2020-11-17T05:42:36Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![mariokleiner](https://avatars.discourse-cdn.com/v4/letter/m/13edae/32.png) [@mariokleiner](https://psychtoolbox.discourse.group/u/mariokleiner)\
**Post date:** [November 17, 2020, 5:42am UTC](https://psychtoolbox.discourse.group/t/macos-big-sur-update-bricking-various-older-macs/3519/1 "2020-11-17T05:42:36Z")

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A little service announcements to those who think upgrading to a new macOS early is a good idea. Apparently it kills various MBP 2013/2014 models on upgrade, because it was just asked to much from the multi-trillion dollar iToy company to test their own machines for compatibility with their own OS:

[https://www.macrumors.com/2020/11/15/macos-big-sur-update-bricking-some-macbook-pros/](https://www.macrumors.com/2020/11/15/macos-big-sur-update-bricking-some-macbook-pros/)

-mario