If Beta, Aurora or Nightly isn’t packaged for your distribution you can use the following script to automatically download the compiled version from Mozilla’s FTP. The script will download Aurora for x86, but it can easily be modified to download Nightly or Beta instead. Nightly can be found on https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-trunk/ and Beta can be found on https://ftp.mozilla.org/pub/mozilla.org/firefox/releases/latest-beta/linux-x86_64/en-US/. I’m myself using the script to update Firefox Aurora on Fedora.

Script:

#!/bin/bash
cd /opt/
FILE=`curl https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/ |
    grep 'firefox-.\{2,6\}\.en-US\.linux-x86_64\.tar\.bz2' -o -m 1 |
    head -1`
wget -O /tmp/aurora.tar.bz2 \
    https://ftp.mozilla.org/pub/mozilla.org/firefox/nightly/latest-mozilla-aurora/$FILE
mkdir -p /tmp/aurora
tar -C /tmp/aurora -xjf /tmp/aurora.tar.bz2
rm -r /opt/aurora
mv /tmp/aurora/firefox /opt/aurora

Save it in a file named update-aurora.sh in your home directory and add execution permission:

$ chmod u+x update-aurora.sh

Then run the script as root:

$ sudo ./update-aurora.sh

Make the executable available as a command via the CLI:

$ sudo ln -s /opt/aurora/firefox /usr/local/bin/aurora

To launch the browser on Gnome 3; press ALT+F2, type aurora and press enter.

If you want to stop the browser’s nagging about searching for a new version:

  1. Open about:config in Firefox.
  2. Set both app.update.auto and app.update.enabled to false.