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.

Avatar for Username

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

This thread was archived. Please ask a new question if you need help.

I downloaded Version 5.0 for my Mac OS X but cannot open it. Message " --- not supported on this architecture" When I downloaded 5.0 it replaced the previous version I was using. How can I get the old version back?

  • 2 replies
  • 25 have this problem
  • 1 view
  • Last reply by fivester

fivester
fivester
more options

I downloaded Firefox 5.0 on my eMac which is running OS X. However I get the error message "----- not supported on this architecture". I need the old version of Firefox back (it was working just fine) but 5.0 replaced it. How do I get the old version back?

I downloaded Firefox 5.0 on my eMac which is running OS X. However I get the error message "----- not supported on this architecture". I need the old version of Firefox back (it was working just fine) but 5.0 replaced it. How do I get the old version back?

All Replies (2)

jscher2000 - Support Volunteer
jscher2000 - Support Volunteer
  • Top 10 Contributor
more options

Sorry, it's because Firefox 4+ are only compiled for the Intel processors.

You can get 3.6.18 here: http://www.mozilla.com/firefox/all-older

Also, for possible future reference, there is a separate project for PPC Macs called Ten Four Fox. You might give it a spin when you're tired of 3.6.

http://www.floodgap.com/software/tenfourfox/

fivester
fivester Question owner
more options

Thank you so much for your help!!