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I have downloaded the new Firefox 4 on Mac OS X, getting message that I cannot use this version of Mac OS X and cannot get back open old 3.6.10 format either since it has been replaced. How can I get this to work or replace previous application?

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theobaldart
theobaldart
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Downloaded Firefox 4 to replace 3.6.10 but cannot open. Message says application will not work with Mac OS X. Can I return to old version or is something incompatible in new Firefox 4?

Downloaded Firefox 4 to replace 3.6.10 but cannot open. Message says application will not work with Mac OS X. Can I return to old version or is something incompatible in new Firefox 4?

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cor-el
cor-el
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Firefox 4 requires at least OS X 10.5 and an Intel Mac.

For Mac OS X 10.4.11 or Mac OS X 10.5.8 you can look at:

Firefox 3.6.x can be found here: