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.

Caută ajutor

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.

Află mai multe

Acest fir de discuție a fost arhivat. Adresează o întrebare nouă dacă ai nevoie de ajutor.

I have downloaded the new Firefox 4 on Mac OS X, getting message that I cannot use this version of Mac OS X and cannot get back open old 3.6.10 format either since it has been replaced. How can I get this to work or replace previous application?

  • 1 răspuns
  • 16 au această problemă
  • 1 vizualizare
  • Ultimul răspuns de cor-el

more options

I have just downloaded Firefox 4 to replace 3.6.10 and am getting a message "You cannot use the application "Firefox" with this version of Mac OS X." How can I fix this or return to the previous version?

I have just downloaded Firefox 4 to replace 3.6.10 and am getting a message "You cannot use the application "Firefox" with this version of Mac OS X." How can I fix this or return to the previous version?

Toate răspunsurile (1)

more options

Firefox 4 requires at least OS X 10.5 and an Intel Mac.

For Mac OS X 10.4.11 or Mac OS X 10.5.8 you can look at:

Firefox 3.6.x can be found here: