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Firefox says my operating system doesn't support upgrade. I have MAC OS X 10.5.6

Posted

When I tried to download the latest Firefox version, a message said that my operating system doesn't support the upgrade. But the information on download page says MAC OS X 10.5 or better is okay. My system is MAC OS X 10.5.6

When I tried to download the latest Firefox version, a message said that my operating system doesn't support the upgrade. But the information on download page says MAC OS X 10.5 or better is okay. My system is MAC OS X 10.5.6

Chosen solution

Do you have a Intel processor or a PowerPC processor as your user agent suggests and Mach-O would indicate an even older OS X version than 10.5 (possibly OS X 9).

  • Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3

Are running Firefox in some compatibility mode via Rosette?

See:


Read this answer in context 3

Additional System Details

This happened

Just once or twice

This started when...

I tried to upgrade my Firefox browser

Installed Plug-ins

  • Shockwave Flash 10.0 r45
  • Runs Java applets using the latest installed versions of Java. For more information: Java Embedding Plugin. Run version test: Test Your JVM.
  • Netscape Navigator Default Plug-in
  • The QuickTime Plugin allows you to view a wide variety of multimedia content in web pages. For more information, visit the QuickTime Web site.
  • Verified Download Plugin
  • Macromedia Shockwave for Director Netscape plug-in, version 10.1.1

Application

  • User Agent: Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3

More Information

cor-el
  • Top 10 Contributor
  • Moderator
12303 solutions 113962 answers

Chosen Solution

Do you have a Intel processor or a PowerPC processor as your user agent suggests and Mach-O would indicate an even older OS X version than 10.5 (possibly OS X 9).

  • Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3

Are running Firefox in some compatibility mode via Rosette?

See:


Do you have a Intel processor or a PowerPC processor as your user agent suggests and Mach-O would indicate an even older OS X version than 10.5 (possibly OS X 9). *Mozilla/5.0 (Macintosh; U; PPC Mac OS X Mach-O; en-US; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3 Are running Firefox in some compatibility mode via Rosette? See: *https://support.mozilla.com/kb/Websites+or+add-ons+incorrectly+report+incompatible+browser *http://kb.mozillazine.org/Resetting_your_useragent_string_to_its_compiled-in_default ---- *Firefox 4 versions and later do not run on a PowerPC Mac. *Firefox 4 and later require at least OS X 10.5 and an Intel Mac. * http://www.mozilla.com/firefox/6.0/system-requirements/

Question owner

Thanks for your response--now I understand. Yes, my Mac is an older PowerPC Mac. I've upgraded Firefox to 3.6.20 and it's working fine. Not gonna buy a new Mac in this economy, ya know? I appreciate your help. Aloha from Hawaii.

Thanks for your response--now I understand. Yes, my Mac is an older PowerPC Mac. I've upgraded Firefox to 3.6.20 and it's working fine. Not gonna buy a new Mac in this economy, ya know? I appreciate your help. Aloha from Hawaii.
cor-el
  • Top 10 Contributor
  • Moderator
12303 solutions 113962 answers

You're welcome

For an unofficial Firefox 4 compatible version (TenFourFox) that runs on PowerPC Macs with OS X 10.4.11 or OS X 10.5.8 you can look at:

You're welcome For an unofficial Firefox 4 compatible version (TenFourFox) that runs on PowerPC Macs with OS X 10.4.11 or OS X 10.5.8 you can look at: * http://www.floodgap.com/software/tenfourfox/ * http://code.google.com/p/tenfourfox/