Where did you install Firefox from? Help Mozilla uncover 3rd party websites that offer problematic Firefox installation by taking part in our campaign. There will be swag, and you'll be featured in our blog if you manage to report at least 10 valid reports!

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

I dl'ed V. 4.0 and it will not run on my Mac with OS 10.4.11. What to do? I trashed v.3.0 and it is lost.

  • 1 reply
  • 3 have this problem
  • 9 views
  • Last reply by TonyE

more options

I dl'ed V. 4.0 and it will not run on my Mac with OS 10.4.11. What to do? I trashed v.3.0 and it is lost.

If V.4.o is not supported by my OS, can I dl the previous version (3.0)?

I dl'ed V. 4.0 and it will not run on my Mac with OS 10.4.11. What to do? I trashed v.3.0 and it is lost. If V.4.o is not supported by my OS, can I dl the previous version (3.0)?

All Replies (1)

more options

Firefox 4 requires at least OS X 10.5 and an Intel Mac. There is a third party version of Firefox 4 that runs on OS X 10.4/10.5 and PPC Macs, for details see http://www.floodgap.com/software/tenfourfox

If you prefer, you can get the latest version of Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html