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I have a mac with os x 10.5.6. After attempting to download firefox I received a message saying that firefox isn't supported on this architecture. What to do?

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  • Last reply by cor-el

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What version of firefox is supported on OS X 10.5.6?

What version of firefox is supported on OS X 10.5.6?

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Firefox 4 and later require at least OS X 10.5 and an Intel Mac.

For an unofficial Firefox 8 compatible version TenFourFox that runs on PowerPC Macs with OS X 10.4.11 and OS X 10.5.8 you can look at:


You can find the latest Firefox 3.6.x release for your system here: