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Mid 2009 Model A1278 / 2.26 or 2.53 GHz Core 2 Duo processor EMC 2326

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My Mac is bricked

Mac is bricked because I tried to install macOS 12 on it :(

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Corrected: Do you have access to another Mac system which you can create a bootable OS installer that is the correct one for your system?

You'll need to go here to get the OS installer: How to get old versions of macOS

You need to stick with OS-X El Capitan (10.11.x)

First format your 32GB thumb drive with GUID Journaled file system using the Disk Utility on your working Mac you're going to use for the OS installer

Follow this guide to create the needed OS installer How to make a bootable OS X 10.11 El Capitan installer drive

You should be able to fix your system!

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2 Comments:

macOS 10.12 ha ha it’s incompatible

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@sunflowerthomas - I thought you had a 2010 system I'm sorry I think the heat is getting to me! ;-{

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Thomas Rogers will be eternally grateful.
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