Note: If you use your Linux distribution's packaged version of Firefox, you will need to wait for an updated package to be released to its package repository. This article only applies if you installed Firefox manually (without using your distribution's package manager).

See: Install Firefox on Linux

First, make sure that you meet the system requirements and have all required libraries.

• http://www.mozilla.org/en-US/firefox/18.0/system-requirements/

You can find the latest Firefox release in all languages and for all Operating Systems here:

• Firefox 18.0.x: http://www.mozilla.org/en-US/firefox/all.html

If you can't use Firefox 18 then check if you can install the Firefox esr version.

• http://www.mozilla.org/en-US/firefox/organizations/all.html
• http://www.mozilla.org/en-US/firefox/10.0.12/system-requirements/

• Firefox 3.6.28: http://www.mozilla.org/en-US/firefox/all-older.html
• ftp://ftp.mozilla.org/pub/firefox/releases/latest-3.6/

• http://www.mozilla.org/en-US/firefox/3.6.28/system-requirements/

additional data: error type:<class 'yum.errors.configerror'> error value: file contains no section headers

also, i'm trying to do 15 not 18.