Latest Firefox OS user agents:

User Agent Browser Device
Mozilla/5.0 compatable (X11; Linux x86_64 like Android 9.0 Mobile; rv:128.0) Links 2.28 like Gecko/20100101 Firefox/128.0 Firefox Mobile 128 Unknown
Mozilla/5.0 (X11; NetBSD arm64; Mobile; rv:121.0) Gecko/20100101 Firefox/121.0 Firefox Mobile 121 Unknown
Mozilla/5.0 (X11; Mobile; rv:92.0) Gecko/92.0 Firefox/92.0 Firefox Mobile 92 Unknown
Mozilla/5.0 (X11; Mobile; rv:140.0) Gecko/20100101 Firefox/140.0 Firefox Mobile 140 Unknown
Mozilla/5.0 (X11; Linux; Mobile; rv:109.0) Gecko/114.0 Firefox/114.0 Firefox Mobile 114 Unknown
Mozilla/5.0 (X11; Linux x86_64; Mobile; rv:147.0) Gecko/20100101 Firefox/147.0 Firefox Mobile 147 Unknown
Mozilla/5.0 (X11; Linux x86_64; Mobile; rv:143.0) Gecko/20100101 Firefox/143.0 Firefox Mobile 143 Unknown
Mozilla/5.0 (X11; Linux x86_64; Mobile; rv:143.0) Gecko/143.0 Firefox/143.0 Firefox Mobile 143 Unknown
Mozilla/5.0 (X11; Linux x86_64; Mobile; rv:140.0) Gecko/20100101 Firefox/140.0 Firefox Mobile 140 Unknown
Mozilla/5.0 (X11; Linux x86_64; Mobile; rv:128.0) Gecko/20100101 Firefox/128.0 Firefox Mobile 128 Unknown