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I downloaded the new firefox and now I get an error stating it won't run with my version of Mac OS? What is the fix?

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  • آخرین پاسخ توسّط TonyE

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I was prompted to upgrade to Firefox 4 - I have a 3.6 version. When I move it to my application folder and tried to run it, I get the error that it cannot run with my version of Mac OS. I'm not sure how to update my OS version or go back to an older version of Firefox.

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Firefox 4 requires at least OS X 10.5. You can get the latest version of Firefox 3.6 from

Mozilla are working to prevent Mac users with non-compatible systems from getting the notification about Firefox 4, and also not displaying the "Download Firefox 4" button on