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I am trying to download macOS catalina 10.15.6. I got the update completed downloaded but after it downloaded I could not get it to install. It keeps telling me that I need macOS 10.15 which is an update that does not exist. Can someone please help me figure out what I need to do.
MacBook Air
Sounds like you are trying to install an update for Catalina, these updates can only be installed
on a mac already running an earlier version of Catalina.
What you need is the full installer for Catalina which is available through the App Store.
Please use Safari to access the following links do not use Firefox
How to upgrade to macOS Catalina – Apple Support
Before upgrading make a full back up of your Mac.
Check that third party apps you use have updates available for the new OS.
Check that your printers/ scanners etc have updated drivers and software available for the new OS.
Connect your mac to your router via cable rather than rely on WiFi.
Do not use your mac while it is downloading
and do not use any other devices that share the same internet connection.
If the App Store says ‘Open’ then it is detecting a previous download of the install app
go to the Applications folder locate Install macOS Catalina.app.
Move it to the Trash, empty the Trash.
Restart, click on the link again, the App Store should say ‘Get' or 'Download'.
If you are considering upgrading to Catalina be warned that it does not support 32bit apps.
Your Mac is probably running 32bit apps and these will need to be updated to 64bit apps,
some updates may be free, some may be paid. Use this app to discover which apps you have
are 32bit, https://www.stclairsoft.com/Go64/. Once the list has been created you can then
contact the developers of the apps to see if they provide 64bit updates.
You downloaded an updater. You need to download the full Installer. See How to upgrade to macOS Catalina. The link is at the end of Section 4. Be sure to trash the file you downloaded.
I am trying to download macOS catalina 10.15.6 but it keeps telling me that I need macOS 10.15 which is an update that does not exist. Can someone please help me figure out what I need to do.
