can i update my macOS Sierra from version 10.12.6 to 10.9
Adobe Acrobat Pro DC requires for Mac OS X version 10.9, 10.10
how can I install these version if I have 10.12.6
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Adobe Acrobat Pro DC requires for Mac OS X version 10.9, 10.10
how can I install these version if I have 10.12.6
Are the two questions related https://discussions.apple.com/thread/253534692
Are the two questions related https://discussions.apple.com/thread/253534692
Those would be a downgrade, not an upgrade. If the software is too old to run in Sierra, check the developer's website for an updated version.
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can i update my macOS Sierra from version 10.12.6 to 10.9