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My mac is OS X Yosemite version 10.10.5 (iMac 21.5 inch, Late 2013)
I would like to have a later version of os, as cannot sync information with iphone it require the later version, also cannot download some application.
Please advise how can i upgrade software.
Thank you
iMac 21.5″, OS X 10.10
Your 2013 mac can upgrade to Mac OS X El Capitan 10.11, macOS Sierra 10.12, macOS High Sierra 10.13,
macOS Mojave 10.14 and macOS Catalina 10.15.
It cannot upgrade to the latest macOS Big Sur 11.0.
If you want to upgrade to Mojave or Catalina I would recommend upgrading to macOS High Sierra first.
Open Safari and click on this link,
How to get old versions of macOS – Apple Support
Go to Check Compatibility to see if your mac qualifies for the OS upgrade you want.
Then go to the Download OS section and click on the OS you want to install.
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 ******.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 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/ then contact the developers of the software to see
if they are offering 64bit updates.
Your 2013 mac can upgrade to Mac OS X El Capitan 10.11, macOS Sierra 10.12, macOS High Sierra 10.13,
macOS Mojave 10.14 and macOS Catalina 10.15.
It cannot upgrade to the latest macOS Big Sur 11.0.
If you want to upgrade to Mojave or Catalina I would recommend upgrading to macOS High Sierra first.
Open Safari and click on this link,
How to get old versions of macOS – Apple Support
Go to Check Compatibility to see if your mac qualifies for the OS upgrade you want.
Then go to the Download OS section and click on the OS you want to install.
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 ******.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 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/ then contact the developers of the software to see
if they are offering 64bit updates.
how to upgrade OS on mac from version 10.10.5 to a later one
