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Lost Firefox in upgrade

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  • 3 have this problem
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  • Last reply by James

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Firefox lured me into upgrading my browser. After the seemingly successful upgrade in which my old Firefox was replaced by a newer version, I got a Firefox (icon) with a circle and a slash that wouldn't launch. Looking to the Mozila website I see I need Mac OS 10.5 or higher. I have 10.4.11. I was surprised how far I could go in downloading an incompatible application.

Is there any way I can retrieve my old Firefox or download an older version?
Firefox lured me into upgrading my browser. After the seemingly successful upgrade in which my old Firefox was replaced by a newer version, I got a Firefox (icon) with a circle and a slash that wouldn't launch. Looking to the Mozila website I see I need Mac OS 10.5 or higher. I have 10.4.11. I was surprised how far I could go in downloading an incompatible application. Is there any way I can retrieve my old Firefox or download an older version?

Chosen solution

Beginning with Firefox 4, Macs must have an Intel x86 processor (yours is a PPC Mac) and OSX 10.5 or higher (yours is 10.4.11).

The good news is that Firefox 3.6.x still supports OSX 10.4 and Macs with the PPC Mac architecture. The bad news is that support for the Firefox 3.6.x series is likely to end in late April 2012.

You can try the third-party product TenFourFox that supports PPC Macs with OSX 10.4.11 and OSX 10.5.8. Firefox 10.0.3 version of TenFourFox is available. The product is based on Firefox released versions (10.0.3 version numbering appears to be the ESR version of Firefox for extended support to corporate environments/organizations). All support is provided by the developer, not by this site:


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Seçilmiş Həll

Beginning with Firefox 4, Macs must have an Intel x86 processor (yours is a PPC Mac) and OSX 10.5 or higher (yours is 10.4.11).

The good news is that Firefox 3.6.x still supports OSX 10.4 and Macs with the PPC Mac architecture. The bad news is that support for the Firefox 3.6.x series is likely to end in late April 2012.

You can try the third-party product TenFourFox that supports PPC Macs with OSX 10.4.11 and OSX 10.5.8. Firefox 10.0.3 version of TenFourFox is available. The product is based on Firefox released versions (10.0.3 version numbering appears to be the ESR version of Firefox for extended support to corporate environments/organizations). All support is provided by the developer, not by this site:


If this reply solves your problem, please click "Solved It" next to this reply when signed-in to the forum.

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I have an iMAC with intel processor but with 10.4.1 All I want is ("old") Firefox back - which I had and really liked for years !

How can you take that away from me ?

Also, I have not idea as to what a PPC MAC is - can someone tell me that?

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Hi nander2, PPC is a different CPU that was used in Macs for many years.

Mozilla is recommending for security reasons that users who cannot run the current generation of Firefox consider another modern browser. If you really can't live without Firefox 3.6.28, and accept that it does have publicly disclosed security vulnerabilities which could allow very bad things to happen to your computer, you can find the old version here.

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nander2, see https://www.mozilla.org/en-US/firefox/all-older.html for Firefox 3.6.28

Since you have a Intel mac and if you can update to OSX 10.5.x you may be able to even use the current Firefox version.

As of Firefox 4.0 one needs both a Intel Mac and at least OSX 10.5