This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

How can I get an older version of Ffx? 4.0 won't install on my old imac OSX 10.5.8.

more options

When I attempt to install Firefox, it will not authenticate. Architecture will not support this version. I have an iMac - PowerMac 6.1. 1 GHz PowerPC Gr (3.3) processor. It's running Mac OS X 10.5.8 (9L31A) Darwin 9.8.0.

May I have access to an older version Firefox that will run on my machine?

Cheers*

When I attempt to install Firefox, it will not authenticate. Architecture will not support this version. I have an iMac - PowerMac 6.1. 1 GHz PowerPC Gr (3.3) processor. It's running Mac OS X 10.5.8 (9L31A) Darwin 9.8.0. May I have access to an older version Firefox that will run on my machine? Cheers*

All Replies (1)

more options

For those that really need an earlier version of Firefox, find your system and the Firefox version you want in releases, download and start the install.

for the latest of version 3
Note Mac OS X 10.4 user, and Mac OS X 10.5 users without Intel cannot upgrade to Firefox 4 or 5.

When reinstalling Firefox from a download, Firefox must be down once the installation starts. When the installation finishes, don't let the install start firefox for you. Instead end the install and start Firefox in your normal manner, thus preventing creating a new profile which does not have your bookmarks cookies, etc (but your old profile would still be around and would).