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.

Rohkem teavet

I have the Mac OS 10.3.9 and cannot load ANY version of Firefox. Suggestions?

more options

Also, when I tried to download either Firefox 3 or 4 from your site, I was informed the app was "corrupt." Any suggestions?

Also, when I tried to download either Firefox 3 or 4 from your site, I was informed the app was "corrupt." Any suggestions?

All Replies (2)

more options

The last version of Firefox that works on OS X 10.3.9 is Firefox 2.0.0.20 available from ftp://ftp.mozilla.org/pub/mozilla.org/firefox/releases/2.0.0.20/mac/en-US/

more options

Take a look at Classzilla for that older Mac.
http://www.floodgap.com/software/classilla/