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.

ابحث في الدعم

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

After I downloaded Firefox 4, it said my system cannot run it. How do I get back to an earlier version of Firefox?

  • 3 ردود
  • 10 have this problem
  • 1 view
  • آخر ردّ كتبه gingerhamer

more options

My Mac is running OSX10.4.11. Where do I go to download an earlier version of Firefox (before 4.0) that is compatible with my system?

My Mac is running OSX10.4.11. Where do I go to download an earlier version of Firefox (before 4.0) that is compatible with my system?

All Replies (4)

more options

similar problem - my G4 iMac is on OS X 10.4.11 and after downloading Firefox v.4 I get error message: 'application Firefox cannot be launched -10661' and am stuffed - how do I get back to previous version 3.6 something - Help please!

more options

Yeah, Firefox 4 requires Mac OS X 10.5 or later. You can download Firefox 3.6 from this download page.

more options

Thank you. The link to the download site was exactly what I needed.

more options

Excellent. Glad to help.