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

firefox 4.0 dmg not recognized on mac os 10.5.8

  • 1 reply
  • 47 have this problem
  • 10 views
  • Last reply by TonyE

more options

trying to upgrade from firefox 3.6. downloaded firefox 4.0 dmg file not recognized. working with mac operating system 10.5.8.

trying to upgrade from firefox 3.6. downloaded firefox 4.0 dmg file not recognized. working with mac operating system 10.5.8.

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

Mozilla are working to prevent Mac users with non-compatible systems from getting the notification about Firefox 4, and also not displaying the "Download Firefox 4" button on http://www.mozilla.com