Latest Firefox 24 user agents:

User Agent Platform Device
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:24.0) Gecko/20300301 Firefox/24.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:24.0) Gecko/20100101 Firefox/24.0 Chrome/80.0.3987.132 Safari/537.36 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:24.0) Gecko/20100101 Firefox/24.0 As: Ubuntu Unknown
Mozilla/5.0 (X11; SunOS i86pc; rv:24.0) Gecko/20100101 Firefox/24.0 Solaris Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20140205 Firefox/24.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20110328 Firefox/24.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux i686; rv:24.0) Gecko/20110328 Firefox/24.0 GNU/Linux Unknown
Mozilla/5.0 (X11; FreeBSD amd64; Linux x86_64; rv:24.0) Gecko/20100101 Firefox/24.0 FreeBSD Unknown
Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:24.0) Gecko/20100101 Firefox/24.0 Fedora Unknown
Mozilla/5.0 (Windows NT 6.3; WOW64; rv:24.0) Gecko/20100101 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.3; rv:24.0) Gecko/20100101 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130712 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130711 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130709 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130708 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130707 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130706 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130704 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130703 Firefox/24.0 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.2; WOW64; rv:24.0) Gecko/20130630 Firefox/24.0 Windows 8 Unknown