Latest Firefox 77 user agents:

User Agent Platform Device
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0,gzip(gfe) Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0 [ip:95.232.67.121] Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:77.0 barthakur.com/kalki) Gecko/20100101 Firefox/77.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:77.0) Gecko/20100101 Firefox/77.0,gzip(gfe) Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux i686; rv:77.0) Gecko/20100101 Firefox/77.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux i386; rv:77.0) Gecko/20100101 Firefox/77.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux armv7l; rv:77.0) Gecko/20100101 Firefox/77.0 Ubuntu Unknown
Mozilla/5.0 (X11; Ubuntu; Linux aarch64; rv:77.0) Gecko/20100101 Firefox/77.0 Ubuntu Unknown
Mozilla/5.0 (X11; U; DragonFly i386; en-US; rv:1.9.1b2) Gecko/20101114 Firefox/77.0 DragonFly Unknown
Mozilla/5.0 (X11; OpenBSD amd64; rv:77.0) Gecko/20100101 Firefox/77.0 OpenBSD Unknown
Mozilla/5.0 (X11; OpenBSD amd64; rv:75.0) Gecko/20100101 Firefox/77.0 OpenBSD Unknown
Mozilla/5.0 (X11; NetBSD amd64; rv:77.0) Gecko/20100101 Firefox/77.0 NetBSD Unknown
Mozilla/5.0 (X11; Linux i686; rv:77.0) Gecko/20100101 Firefox/77.0 GNU/Linux Unknown
Mozilla/5.0 (X11; Linux i686; rv:10.0) Gecko/20100101 Firefox/77.0 GNU/Linux Unknown
Mozilla/5.0 (X11; FreeBSD; Linux i686; rv:77.0) Gecko/20100101 Firefox/77.0 FreeBSD Unknown
Mozilla/5.0 (X11; FreeBSD i386; rv:77.0) Gecko/20100101 Firefox/77.0 FreeBSD Unknown
Mozilla/5.0 (X11; FreeBSD amd64; rv:77.0) Gecko/20100101 Firefox/77.0 FreeBSD Unknown
Mozilla/5.0 (X11; Fedora; Linux x86_64; rv:77.0) Gecko/20100101 Firefox/77.0 Fedora Unknown
Mozilla/5.0 (Windows NT 6.3; x64) AppleWebKit/537.36 (KHTML, like Gecko) Firefox/77.0.0.0 Safari/537.36 Windows 8 Unknown
Mozilla/5.0 (Windows NT 6.3; rv:77.0) Gecko/20100101 Firefox/77.0 Windows 8 Unknown