Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Buscar en Ayuda

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

I downloaded Firefox 4 to replace my Firefox 3 on my Mac, but 4.0 for Mac says it will not open on my computer. How can I get my Firefox 3 version back?

  • 1 respuesta
  • 13 tienen este problema
  • 125 visitas
  • Última respuesta de TonyE

Firefox just updated my Firefox 3.??? version on my Mac. Firefox encouraged me to download the new 4.0 version for Mac, so I did. However, when I try to open the 4.0 version it says that it cannot run on my OS X version (which has been updated). How can I either get Firefox 4.0 to work, or alternatively how can I get my latest version of 3.??? reinstalled. (I could not find the 3.??? version to install on the Firefox site.)

Firefox just updated my Firefox 3.??? version on my Mac. Firefox encouraged me to download the new 4.0 version for Mac, so I did. However, when I try to open the 4.0 version it says that it cannot run on my OS X version (which has been updated). How can I either get Firefox 4.0 to work, or alternatively how can I get my latest version of 3.??? reinstalled. (I could not find the 3.??? version to install on the Firefox site.)

Todas las respuestas (1)

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

Firefox 4 requires at least OS X 10.5