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How do i run a software update?
iMac 27″ 5K, macOS 10.13
Here's how to do it Update macOS on Mac - Apple Support
And here you can see a complete list of compatibility in order to determine the exact version you can go up to https://eshop.macsales.com/guides/Mac_OS_X_Compatibility
Here's how to do it Update macOS on Mac - Apple Support
And here you can see a complete list of compatibility in order to determine the exact version you can go up to https://eshop.macsales.com/guides/Mac_OS_X_Compatibility
Since this posting is in Big Sur - assume the computer is already running Big Sur. If Yes - System Preferences >> Software Update.
If, as per profile in this posting, running High Sierra >>
The Age of this computer will Govern what newer version of macOS it will Qualify to install. Use About this Mac from the Apple Icon on Desktop - the required Information will be there.
With the above information in-hand - follow this How to get old versions of macOS and verify what version this computer Qualifies to install. Make sure to use Only Safari to commence the download as Other may not work
Make a Time Machine Backup Before attempting. Notation - Mojave is the Last version to support 32 bit applications / extensions and Drivers. Catalina and Big Sur Only support 64 bit and there is no workaround.
Are there any AntiVirus, Disk Cleaner, Optimizers, Defrag, VPNs etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation.
mac computer software
