We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

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.

Invited to download Firefox 4.0. Did it and cannot connect at all.

  • 3 replies
  • 58 have this problem
  • 3 views
  • Last reply by zjollyjoker

RHofer
RHofer
more options

Invited to upgrade to Firefox 4.0. Downloaded it. When prompted to move it to the Application folder, it instructed me to Replace the existing Firefox. When i try to open Firefox (which has a big circle with cross line through it, I get the message "Cannot open Firefox; not supported on this architecture. How can I download the OLDER version (3.16)?

Invited to upgrade to Firefox 4.0. Downloaded it. When prompted to move it to the Application folder, it instructed me to Replace the existing Firefox. When i try to open Firefox (which has a big circle with cross line through it, I get the message "Cannot open Firefox; not supported on this architecture. How can I download the OLDER version (3.16)?

Chosen solution

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 Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

Read this answer in context 👍 8

All Replies (3)

TonyE
TonyE
  • Moderator
more options

Chosen Solution

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 Firefox 3.6 from http://www.mozilla.com/en-US/firefox/all-older.html

RHofer
RHofer Question owner
more options

Thank you very much for the information. I went back to v. 3.6 and my problem was solved. I wonder why Mozilla did this?

zjollyjoker
zjollyjoker
more options

4.0 is not compatible with my machine-- how may I block the Firefox urgent start page reminders that I upgrade? Perhaps a Persona? Perhaps a new Home Page?

Thanks.