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how to revert to firefox 3


I downloaded the new version of Firefox and it won't open on my Mac. How do I revert to the previous version. I am running OSX 10.4.1. Thanks

Additional System Details

This started when...

I downloaded Firefox 4 and it won't open.


  • User Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_4_11; en) AppleWebKit/533.19.4 (KHTML, like Gecko) Version/4.1.3 Safari/533.19.4

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mozillamarcia 1 solutions 18 answers

Here is the system requirements page: http://www.mozilla.com/en-US/firefox/system-requirements.html.

http://www.mozilla.com/en-US/firefox/all-older has the latest 3.6.x version, and http://www.floodgap.com/software/tenfourfox/ is another option.

  • Moderator
1041 solutions 8840 answers

mozillamarcia, the OP is using an Intel Mac so they will not be able to use the unofficial version from tenfourfox, as that one requires a PPC mac.