11.2.1 is your best bet for now (as of Feb 28 2021). Warning! Before trying to install anything newer than 11.2.1, please make sure that it’s still supported by micropatcher! There are some troubles in installing 11.3 Beta 2, which was not resolved at the time of writing this guide. 11.2.1 (update via full installer and running patcher again).Versions that proven to be working for me: That “GUID” part IS IMPORTANT! Micropatcher cannot be applied to a MBR partitioned drive!Īll data on the USB drive will be destroyed in this process! Downloading installer Format your drive with “Mac OS Extended (Journaled)” and “GUID Partition Map”.Create separate Partition, not just Volume. Installing Big Sur in the same APFS container as your current macOS installation will cause issues. Important: it must be not in the same container as your current mac installation. Run Disk Utility and create new partition, at least 60 GB in size. If you have a working OS on your machine, please KEEP IT. Make a Time Machine backupĪs always, before installing a new major release of any macOS, you should do a TM backup, especially before installing a Big Sur, which changes TM backups in some ways. To install Big Sur, you’ll need an USB drive of at least 16GB in capacity. With the new release of Big Sur, apple have dropped my “brand new” Mac Mini Late 2012, so that’s how I made it work with the help of MacRumors community. It should work for both Big Sur and Monterey. This guide kept here for the historic purposes.įollow OpenCore Legacy Patcher instructions:

Update from Dec 13 2021: Please use this patcher for the best experience. Update from Feb 28 2021: I’ve successfully updated my 11.0.1 installation to 11.2.1 and added information about updates. The information provided below was confirmed to be valid on a 11.0.1. Update from Nov 22 2020: I updated the guide for a release version of a Big Sur! Now it uses some new tools made by community, that makes process a lot easier in many ways.

Mid 2012 macbook air os update