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I am running Mac OS X 10.5.8 and I cannot download Firefox 4 because it says it is incompatible with my operating system, although supposedly it is compatible with OS X 10.5

Posted

I would like to download Firefox 4. I get an error message during download saying it is incompatible with my operating system and that it needs OS X 10.5 or 10.6 but I AM using 10.5.8, so what might be the problem?

I would like to download Firefox 4. I get an error message during download saying it is incompatible with my operating system and that it needs OS X 10.5 or 10.6 but I AM using 10.5.8, so what might be the problem?

Additional System Details

This happened

Every time Firefox opened

This started when...

I tried to download Firefox this morning

Installed Plug-ins

  • Gecko default plugin
  • Runs Java applets using the latest installed versions of Java. For more information: Java Embedding Plugin. Run version test: Java Information.
  • npmnqmp 071101000050
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • Shockwave Flash 10.1 r102
  • Java Plug-In 2 for NPAPI Browsers
  • The Flip4Mac WMV Plugin allows you to view Windows Media content using QuickTime.
  • iPhoto6
  • Macromedia Shockwave for Director Netscape plug-in, version 10.1.1

Application

  • User Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5; en-US; rv:1.9.1.17) Gecko/20110121 Firefox/3.5.17

More Information

TonyE
  • Moderator
1044 solutions 8863 answers

Helpful Reply

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

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