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I cannot download high sierra
Follow the guidance in the Related Article above your post.
Ensure that you are using the Safari browser to download the installer.
What happens when you try to download the installer?
Do you get any error message?
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
On my 5,1 Mac Pro, the message said:
This copy of the Install macOS High Sierra.app application is damaged, and can‘t be used to install macOS.
On my Macbook Pro, I then tried to download OS X High Sierra. It seemed to be working too, soon with 3.5 GB of the over 5 GB file downloaded ... but then a window came up and said the software was too old to upgrade ... and I could not find the image file that had been downloading.
I thought with that software from the macbook, I could copy the image file onto my MacPro and having booted from a Sierra boot disk, I could then let the upgrade to High Sierra commence. But the file's download never finished on the macbook. And it would not even download on the Mac Pro.
Choose Applications from the Finder's Go menu, throw the existing installer away, and download another copy.
(209072)
I will try ... If it works, I won't be able to reply thanking you for some time, as I'll be installing High Sierra!
It is now downloading! Thanks! Hopefully it will fully download!
thanks again.
MP
Thanks Niel,
My 5,1 now is running High Sierra, thanks to you.
Cheers
MP
I want to download high sierra
