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updating Mac OS

I updated my Mac to Monterey then it was not stable. so I decided to downgrade my Mac but I downgrade to Mojave now , I am not able to upgrade to Catalina or big sur as it get stuck at checking null

solution with pics is a big help

thanku

MacBook Air 13″, macOS 10.14

Posted on Nov 12, 2021 9:22 PM

Reply
14 replies

Nov 12, 2021 9:32 PM in response to ishu194

ishu194 Said:

"updating Mac OS: I updated my Mac to Monterey then it was not stable. so I decided to downgrade my Mac but I downgrade to Mojave now , I am not able to upgrade to Catalina or big sur as it get stuck at checking null [...]Also I tried safe mode"

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Three Thoughts:

A. Try Ethernet:

Ethernet is hardwired. So, a connection would be more reliable. For a Mac that does not have Ethernet, this would be the adapter to use: Belkin USB-C to Gigabit Ethernet Adapter - Apple.


B. Try a New User:

Try creating a new Administrator user, seeing if you can get this to work.


C. Try Force Quit:

Use this User Tip: [command+tab] Use it to Access your Mac when Something is Not Responding - User Tip

In Depth:

First, you need to exit the apps and get to Finder (the Smileyface):  Once in Finder, use Force Quit...

Use Force Quit for Each App:

  1. Go to: Apple menu
  2. Select: Force Quit...
  3. Select: an app
  4. Click: the Force Quit... button
  5. Click: the Force Quit... Button.
  6. Perform seeps 3-6 for all listed apps
  7. Restart your Mac

Nov 13, 2021 3:06 AM in response to ishu194

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.  For Best results use Safari to commence the download as Others may not work.


Safari will open a redirect and open the Apple Store where the download can commence


Tips Big Sir Upgrade Released Nov 2020


Tips Monterey Upgrade  Released Oct 25, 2021


Make Time Machine Backup  is very useful and can be used to Revert to Previous Working macOS


Notation - Mojave is the Last version to support 32 bit applications / extensions and Drivers. Catalina, Big Sur & Monterey supports only 64 bit and there is no workaround.


Suggest using Go64 to find 32 bit application before attempting the upGrade. Some or many of the Application already installed may required update or upGrades to 64 Bit Versions.


Are there any AntiVirus, Disk Cleaner, Optimizers, Un-installers, 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

updating Mac OS

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