Latest Firefox 12 user agents:

User Agent Platform Device
Mozilla/5.0 (compatible; Windows; U; Windows NT 6.2; WOW64; en-US; rv:12.0) Gecko/20120403211507 Firefox/12.0 Windows 8 Unknown
Mozilla/5.0 (Windows 98; Win 9x 4.90; mni-IN; rv:1.9.2.20) Gecko/9248-04-21 22:11:01.303009 Firefox/12.0 Windows ME Unknown
Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20120403211507 Firefox/12.0 Windows XP Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.9; rv:12.7) Gecko/20100101 Firefox/12.7.6 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.8; rv:12.6) Gecko/20100101 Firefox/12.6.1 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.7; rv:12.8) Gecko/20100101 Firefox/12.8.4 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.6; rv:12.9) Gecko/20100101 Firefox/12.9.8 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.6; rv:12.3) Gecko/20100101 Firefox/12.3.4 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.6; rv:12.3) Gecko/20100101 Firefox/12.3.3 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.3; rv:12.3) Gecko/20100101 Firefox/12.3.9 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.2; rv:12.2) Gecko/20100101 Firefox/12.2.5 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.2; rv:12.2) Gecko/20100101 Firefox/12.2.3 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; PPC Mac OS X 10.5.2; rv:12.2) Gecko/20100101 Firefox/12.2.0 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:12.9) Gecko/20100101 Firefox/12.9.5 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:12.9) Gecko/20100101 Firefox/12.9.4 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:12.9) Gecko/20100101 Firefox/12.9.3 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:12.8) Gecko/20100101 Firefox/12.8.6 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:12.7) Gecko/20100101 Firefox/12.7.6 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:12.7) Gecko/20100101 Firefox/12.7.1 Mac 10 Unknown
Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5.9; rv:12.6) Gecko/20100101 Firefox/12.6.8 Mac 10 Unknown