Downgrade big sur

NurseYi wrote:

Downgrade big sur

How do I get Catalina back?

?

You hardly give all the details ...

Revert to previous macOS

https://support.apple.com/en-za/guide/mac-help/mh15216/10.15/mac/10.15

How To Downgrade macOS Big Sur To Catalina Or Older ...

https://www.macworld.co.uk/how-to/downgrade-macos-3581872/

Is your mac capable of running Catalina? Typically if a Mac shipped with Big Sur it is not capable of downgrading the OS

older macOS installer backups on this server:

https://support.apple.com/en-gb/HT211683

verify you are using the Safari browser to download/initiate the macOS links.

*How to reinstall macOS from macOS Recovery - https://support.apple.com/en-us/HT204904

Erase your drive and either restore from a backup from Catalina or install Catalina, then migrate from the backup.

NurseYi wrote:

I have a 2013 MacBook Pro. My laptop was fine until I upgraded to Big Sur 11.5.1.

I just did a factory reset (erased everything). I don’t have any backups. I tried to reinstall Catalina with a link from the App Store, but it keeps attempting to check for software upgrades.

Was this Method used How to erase an Intel-based Mac If so, the Apple Apps Store would not be present on this computer to attempt to download Catalina.