adingbatponder :mastodon: on Nostr: #nixos I need firefox to be version 129 or over ...

#nixos I need firefox to be version 129 or over https://support.mozilla.org/bm/questions/1455729
to allow #amazonprime to show movies on #firefox but the version of firefox did not update when I did
sudo nix-channel --update
followed by
sudo nix-rebuild switch --upgrade
and rebooting
what am I doing wrong ?