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Question: how do I down grade my OS from High Sierra to Sierra?

I am having a problem with Epson printer software for High Sierra.

How do I downgrade my OS so that I can use my printer again?!

iPad 2

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macOS Sierra: Revert to a previous macOS version

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Nov 19, 2017 12:44 AM in response to dixson In response to dixson

[edit: can someone verify - this is the case for me and I'm in the US]

You will need an archived installer for Sierra as Apple has replaced previous Sierra purchases in the App store with High Sierra and Sierra is no longer available from Apple there.


All that aside 10.12 and 10.13 are for the most part identical. If you are having issues with your printer in 10.13 you were not having in 10.12 see this article

macOS Sierra: Reset the printing system

if problems persist contact the manufacture of the device and they may be able to provide you with a solution.

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Nov 17, 2017 6:00 AM in response to dixson In response to dixson

Backup your data. Even better make 2 backups using 2 different backup utilities going to 2 different backup devices, because "Murphy's Law" don't care if your 1 and only copy if bad.


Erase the boot disk


Do a clean install of Sierra.

When the install ask if you want to restore any data, point it at one of your backups.

Nov 17, 2017 6:00 AM

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Nov 19, 2017 12:44 AM in response to dixson In response to dixson

[edit: can someone verify - this is the case for me and I'm in the US]

You will need an archived installer for Sierra as Apple has replaced previous Sierra purchases in the App store with High Sierra and Sierra is no longer available from Apple there.


All that aside 10.12 and 10.13 are for the most part identical. If you are having issues with your printer in 10.13 you were not having in 10.12 see this article

macOS Sierra: Reset the printing system

if problems persist contact the manufacture of the device and they may be able to provide you with a solution.

Nov 19, 2017 12:44 AM

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Question: how do I down grade my OS from High Sierra to Sierra?