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10.13.6 upgrade

I recently got this Mac from my MIL. It was supposed to be scratch and dent, but I suspect refurbished. I wiped it clean, and it is now operating on IOS High Sierra (10.13.6). Every time I try to update the software, it shows there are no updates. When I try to go to the Apple Support Site to download BigSur, it tells me that it cannot connect to the App Store. How can I update my OS? *Please be kind as I am not very computer savvy. :)

iMac 21.5″, macOS 10.13

Posted on Jan 3, 2021 5:22 PM

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Question marked as Top-ranking reply

Posted on Jan 3, 2021 8:15 PM

macOS Big Sur - Technical Specifications


General Requirements

  • OS X 10.9 or later
  • 4GB of memory
  • 35.5GB available storage on macOS Sierra or later*
  • Some features require an Apple ID; terms apply.
  • Some features require a compatible internet service provider; fees may apply.

Mac Hardware Requirements

For details about your Mac model, click the Apple icon at the top left of your screen and choose About This Mac. These Mac models are compatible with macOS Big Sur:

  • MacBook (2015 or later)
  • MacBook Air (2013 or later)
  • MacBook Pro (Late 2013 or later)
  • Mac mini (2014 or later)
  • iMac (2014 or later)
  • iMac Pro (2017 or later)
  • Mac Pro (2013 or later)

Learn about compatibility and how to identify your specific Mac model

Don't use FireFox or WaterFox for this link. it'll mess it up...

https://apps.apple.com/us/app/macos-big-sur/id1526878132?ls=1&mt=12

1 reply
Question marked as Top-ranking reply

Jan 3, 2021 8:15 PM in response to punkin1004

macOS Big Sur - Technical Specifications


General Requirements

  • OS X 10.9 or later
  • 4GB of memory
  • 35.5GB available storage on macOS Sierra or later*
  • Some features require an Apple ID; terms apply.
  • Some features require a compatible internet service provider; fees may apply.

Mac Hardware Requirements

For details about your Mac model, click the Apple icon at the top left of your screen and choose About This Mac. These Mac models are compatible with macOS Big Sur:

  • MacBook (2015 or later)
  • MacBook Air (2013 or later)
  • MacBook Pro (Late 2013 or later)
  • Mac mini (2014 or later)
  • iMac (2014 or later)
  • iMac Pro (2017 or later)
  • Mac Pro (2013 or later)

Learn about compatibility and how to identify your specific Mac model

Don't use FireFox or WaterFox for this link. it'll mess it up...

https://apps.apple.com/us/app/macos-big-sur/id1526878132?ls=1&mt=12

10.13.6 upgrade

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