curl -o firefox.tar "https://download.mozilla.org/?product=firefox-devedition-latest-ssl&os=linux64&lang=en-US" -fSL#

tar -xvf firefox.tar

mv --force --verbose firefox /opt
ls -l /opt/firefox/

# wget https://raw.githubusercontent.com/mozilla/sumo-kb/main/install-firefox-linux/firefox.desktop -P /usr/local/share/applications
# https://github.com/mozilla/sumo-kb/blob/main/install-firefox-linux/firefox.desktop

mkdir -p /usr/local/share/applications

curl -f#SL -o /usr/local/share/applications/firefox.desktop https://github.com/mozilla/sumo-kb/raw/main/install-firefox-linux/firefox.desktop

sed -i "s@^Exec=firefox.*@Exec=/opt/firefox/firefox %U@g" /usr/local/share/applications/firefox.desktop
cat /usr/local/share/applications/firefox.desktop

ln -s /opt/firefox/browser/chrome/icons/default/default128.png /usr/share/icons/hicolor/128x128/apps/firefox.png
ls -l /usr/share/icons/hicolor/128x128/apps/firefox.png

https://support.mozilla.org/zh-CN/kb/install-firefox-linux#w_cong-mozilla-an-zhuang-firefox

Firefox Developer Edition

https://www.firefox.com/zh-CN/channel/desktop/developer/?redirect_source=mozilla-org
https://www.firefox.com/en-US/channel/desktop/developer/?redirect_source=mozilla-org
https://www.firefox.com/zh-TW/channel/desktop/developer/?redirect_source=mozilla-org