wget http://download-location
sudo tar xjvf thunderbird-24.2.0.tar.bz2 -C /opt
ln -s /opt/thunderbird/thunderbird /usr/bin/thunderbird
[sudo] password for one:
ln: creating symbolic link `/usr/bin/thunderbird': File exists
sudo rm /usr/bin/thunderbird
ln -s /opt/thunderbird/thunderbird /usr/bin/thunderbird
The above is how I did it, if you don't do it properly you'll find that you are still using the old version (so verify in About that it is the new version). I've verified the above method works perfectly, it's great if you're using an older version of Linux and need to update the most commonly used programs like Thunderbird and Firefox.
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