Why do you not want the updated version? Running old and out of date versions of Firefox leaves you open for attack by hackers, plus older versions are slow and buggy compared to modern ones.

i really do not want the up grades i have been using firefox for over 10 years and i have 5 computers i do not like the changes! i do not want tabs!! and just because some one thinks their way is better it is not for every one i have a hi IQ and i am always up to new ideas but my way is more efficient to me!!! security up dates are fine but not the changes!!!

There is usually a way to undo changes or at least some of them by using extensions or via other ways like custom style rules, either via a userChrome.css file or via the Stylish extension.

• Stylish: https://addons.mozilla.org/firefox/addon/stylish/
• http://userstyles.org/help/stylish_firefox

You can look at the Classic Theme Restorer extension to restore some functionality that was lost with the arrival of the Australis style in Firefox 29.

• Classic Theme Restorer: https://addons.mozilla.org/firefox/addon/classicthemerestorer/

• You can check out the settings of the CTR extension via its Options/Preferences button on the "Firefox/Tools > Add-ons > Extensions" page.
• You can find extra toolbar buttons and more toolbar settings in Customize (3-bar Firefox menu button > Customize)

See also:

• https://support.mozilla.org/kb/how-to-make-new-firefox-look-like-old-firefox
• https://support.mozilla.org/kb/common-questions-after-updating-to-new-firefox
• https://support.mozilla.org/kb/learn-more-about-the-design-of-new-firefox