FCP 11.1.1 on macOS 26.6: Upgrade options?

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FCP 11.1.1 on macOS 26.6: Upgrade options?

Has anyone run FCP 11.1.1 in MacOS 26.6? We're at a point in on-going projects where I could update an M1 Ultra and a couple M4 Pro Mac Minis to MacOS 26.6 and FCP 12.3 but I'd like the fallback of being able to run our current 11.1.1 in case something breaks. (I didn't get to 11.2 before it was no longer available.) I could also just update to the last MacOS 15.x.x version if that would be better for FCP 11.1.1 since FCP 12.3 will work with that too.

Thanks for any help.

Posted on Aug 6, 2026 6:51 PM

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Answer 1

terryb Author

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Aug 12, 2026 5:18 PM in response to terryb

Replying to myself: I used one of the M4 Pro Mac Minis as a guinea pig and installed MacOS 26.6.1. FCP 11.1.1 appears to work without issue. Also, mInstaller updated itself and appears to still work properly, correctly identifying purchased plugins and licenses. I was concerned with Apple's purchase of mVFX that things might not work. Still open to hearing other's 26.6 experiences.

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Answer 2

terryb Author

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Aug 12, 2026 2:23 PM in response to terryb

Anybody run into showstoppers with FCP 12.3 on MacOS 26.2? I'm trying to decide whether to upgrade an M1 Ultra Mac Studio and an M4 Pro Mac mini to the latest MacOS 15.x or to the current 26.6.1. Your experiences greatly appreciated. Thanks!

EDIT: Will existing mVFX plugins used in libraries break if upgrading to MacOS 26.6.1?

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Answer 3

Aug 7, 2026 5:24 AM in response to terryb

GitHub has links for most of the trial versions.

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Answer 4

terryb Author

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Aug 7, 2026 10:57 AM in response to Ian R. Brown

Thanks Ian. Though I don't think I'd trust an FCP trial version posted to GitHub.

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