how to revert to catalina from big sur

I am not able to use either my usb connected Brother printer or my Canon wireless printer since upgrading to Big Sur. I want to revert, but my backup got corrupted. How do I remover OS Big Sur and install Catalina?

MacBook Air 13″, macOS 11.6

Posted on Oct 9, 2021 6:09 PM

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Revert to Catalina Hi guys, My 2017 Mac desktop came with High Sierra installed and I have updated through Mojave, Catalina and now Big Sur. Unfortunately, Big Sur is obviously a step too far for my not-too-ancient machine. For example, Affinity Photo used to open quickly, now it takes up to 90 seconds or just bounces like a kangaroo on a bouncy castle until I force stop it. I would like to revert to Catalina, (or even Mojave). I have always used Time Machine, so I assume it should be easy to rebuild to the last Catalina backup. How do I either get back to the last Catalina Backup or failing that, clean install Mojave or Catalina? I will obviously back up all my data first. I have been a very happy Apple user for the last three years but Big Sur has been a big disappointment.
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Is it possible to go back to Catalina? Any ideas of whether or not it is possible still currently to download Catalina? I have read elsewhere that one cannot upload Catalina after going with Big Sur. Big Sur does not support my needs. I want to purge it and go back to Catalina. [Re-Titled by Moderator]
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1 reply

Jack-19

Level 8

46,254 points

Oct 9, 2021 6:15 PM in response to jerryjoe1

Welcome to the Apple Support Communities.

It is wiser to fix any issues with macOS Big Sur than attempt to install macOS Catalina.

First, delete all printer software. Next, Reset the Mac printing system. Finally, Add a printer.

Jack

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how to revert to catalina from big sur

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