Howto install Firefox 3 Beta 2 in Ubuntu 7.10 (Gutsy Gibbon)

Sponsored Link
Firefox 3 Beta 2 is a developer preview release of Mozilla's next generation Firefox browser and is being made available for testing purposes only.

These beta releases are targeted to Web developers and our testing community to gain feedback before advancing to the next stage in the release process. The final version of Firefox 3 will be released when we qualify the product as fully ready for our users.

Firefox 3 Features

Firefox 3 is based on the new Gecko 1.9 Web rendering platform, which has been under development for the past 28 months and includes nearly 2 million lines of code changes, fixing more than 11,000 issues. Gecko 1.9 includes some major re-architecting for performance, stability, correctness, and code simplification and sustainability. Firefox 3 has been built on top of this new platform resulting in a more secure, easier to use, more personal product with a lot under the hood to offer website and Firefox add-on developers.

More Features check here

Installing Firefox3.0 beta2 in ubuntu

Preparing your system

sudo apt-get install libstdc++5

Now you need to take backup of your old firefox prferences

sudo cp -R ~/.mozilla ~/.mozillabackup

Now you need to download firefox 3.0b2 from here

Now you have firefox-3.0b2.tar.bz2 file

Unzip the .tar.bz2 file in /opt directory using the following command

sudo tar -C /opt -jxvf firefox-3.0b2.tar.bz2

Now you need to link the plugins using the following command

cd /opt/firefox/plugins/

sudo ln -s /usr/lib/mozilla-firefox/plugins/* .

Now you need to create a link to your new firefox launcher using the following command

sudo dpkg-divert --divert /usr/bin/firefox.ubuntu --rename /usr/bin/firefox

sudo ln -s /opt/firefox/firefox /usr/bin/firefox

sudo dpkg-divert --divert /usr/bin/mozilla-firefox.ubuntu --rename /usr/bin/mozilla-firefox

sudo ln -s /opt/firefox/firefox /usr/bin/mozilla-firefox

This will complete the installation of firefox 3.0b2

If you want to open firefox 3 beta 2 go to Applications--->Internet--->Firefox Web Browser

Once you open first time you should see similar to the following screen

Firefox 3.0 beta 2 in Action

Firefox Version Details

Sponsored Link

You may also like...

29 Responses

  1. Uzi says:

    This post helped me alot

  2. m10 says:

    if i understood correctly it replaces the existing installation?(at the end you have only one firefox icon in the menu… but it may mean nothing)
    Q1: have i to uninstall the old installation first?
    Q2: is it possible to have both 2.0 and 3b2?if yes how?

  3. admin says:

    this will replace the existing installation this is only beta release do not install in you production systems

    q1.Not required the above procedure will replace

    q2.yes, i need to check this

  4. Paulo says:

    I did some shit. As it is told, the new installation replaced the old one. That would be no problema, if the flash player worked in firefox 3.0.

    Could you please post a how to get back the old version or the solution to flash player?

  5. Hrvoje says:

    In my Gutsy for Fiorefox Flash to work this line

    sudo ln -s /usr/lib/mozilla-firefox/plugins/* .

    has to be changed to

    sudo ln -s /usr/lib/firefox/plugins/* .

    Default directory has different name. And btw how to remove Firefox beta 2 completely ? Its very heavy on my CPU when I open more than 3 or 4 tabs.

  6. m10 says:

    It would be really great if you could (soon) publish a new guide: howto install firefox 3 beta 2 alongside firefox 2!!
    (you may post the uninstalling instructions too)
    thank you for your effort!

  7. ojai says:

    What do you see when you go to about:plugins ? Do you see all of the plugins that you see for firefox 2? I can’t figure out how to get my old plugins to register.


  8. k-caj says:

    I’ve tried installing like this on my ubuntu 7.04 and it’s not working (it says “file doesn’t exist” when I try to start firefox, but there is firefox folder in /opt and I’ve checked all commands twice, I did everything like you said)

    Are there any additional steps for 7.04? What can i check to see what I did wrong?
    Or, can you tell me how to undo all that, so I can have my FF2 back?

    (please, as simple as you can – I’m a designer, and I’m using ubuntu just for testing my websites, my knowledge for installing new things stops at apt-get… 🙂

  9. Jack Kerouac says:

    NONE of my plugins work now, especially JAVA. Can you PLEASE post a method of removing Firefox 3 Beta 2?

  10. Jack says:

    I managed to roll back to Firefox 2 by doing:


    $ sudo rm /usr/bin/firefox
    $ sudo rm /opt/firefox
    $ sudo dpkg-divert –rename –remove /usr/bin/firefox
    $ sudo apt-get install firefox –reinstall

    I will wait for the official Firefox 3 release. I looking forward to it but I can not stand a minute without AdBlock.

  11. Chris says:

    With me the terminal says when I try to unpack the tar.bz2:

    tar: firefox-3.0b2.tar.bz2: Cannot open: No such file or directory
    tar: Error is not recoverable: exiting now
    tar: Child returned status 2
    tar: Error exit delayed from previous errors

    What is the problem?????

    kind regards, Chris

  12. darkshado says:

    tar: firefox-3.0b2.tar.bz2: Cannot open: No such file or directory
    tar: Error is not recoverable: exiting now
    tar: Child returned status 2
    tar: Error exit delayed from previous errors

    Same problem! With the instruction

    sudo tar -C /opt -jxvf firefox-3.0b2.tar.bz2

    somthing wrong…

  13. Goran says:

    This is really annoying: I cant get the flash plug-in to work, nor can I reinstall FF2.
    This how-to sucks…

  14. Kansu says:

    Chris and Darkshade,
    Either cd into the directory that contains your downloaded firefox-3.0b2.tar.bz2 file or specify the path to this file in your command. That is:

    either do the following if firefox-3.0b2.tar.bz2 was saved to, for instance, your Desktop:

    cd ~/Desktop

    and then do sudo tar -C /opt -jxvf firefox-3.0b2.tar.bz2



    sudo tar -C /opt -jxvf ~/Desktop/firefox-3.0b2.tar.bz2

  15. Alberto says:

    Hi I have a dual boot win/ubuntu laptop. I’ve just installed Firefox 3 Beta 2 on Windows in a single simple step (double click the exe). Why is this task so bizantine in Ubuntu?

  16. Adross says:

    You can unzip the tar.gz file and install firefox 3 in a similiar fashion to it’s windows counter part. This is just provides a more elegant install.

  17. krishna says:

    You can now install the latest Beta RC by enabling backports and then apt-get’ing firefox-3.0. This is the best way to do the install as it won’t replace or override your firefox 2 install – it will even make new ~/.mozilla/firefox-3.0 profile settings (although it will import your settings from firefox 2, it won’t replace them).

    to install your plugins (eg, flash), just sudo cp /usr/lib/firefox/plugins/* /usr/lib/firefox-3.0/plugins (or ln -s, either will work)

    i’d definitely recommend doing the install this way, as you won’t have any problems with this beta 3 replacing your stable 2 (although as far as i can tell, 3 is definitely stable enough now for normal use)

  18. francisco says:

    ok this was a great experience for me, I tried then it worked but, I couldn’t see any movies or anything so I wanted to go back then I had to try Chris how to, to go back to firefox 2, after I found out that Grandparadiso ****””””is””””**** firefox beta3
    thanks anyways

  19. admin says:

    try this for flash plugin make it work thanks to daniel

    To get Flash working in FF3, run this command

    sudo cp /usr/lib/firefox/plugins/* /usr/lib/firefox3preb3/plugins

  20. hani says:

    i was trying to install firefox 3 beta 4, but i screwed my firefox 2.1
    now i have only firefox 3 that is very unstable how can i get rid of if and go back to firefox 2.1. H E L P.

  21. augustose says:

    Great ! tnks it helps me a lot !

  22. kerml says:

    It works with firefox 3 final on ubuntu 7.10 gutsy too.

  23. Jamea says:

    Well, i have tried to install firefox 3 three times with three different ways of doing it and I still have firefox 2 installed. Not sure what’s going wrong.

  24. Rodrigo Kulb says:


    apt-get install firefox-3.0


  25. Ermanno says:

    I wrote a couple of script to automate the install:

  26. aldo says:

    hey i follow the instructions for the installation, but it was firefox 3.0, everything came out as expected but one thing, all the information about bookmarks, themes, home page was lost.
    is there something im not doing well of i need to retrieve that?

    thanks for the help !!

  27. Ben says:

    How do you get tor to work? When I check my ip from a website, it’s still identifying the old browser when tor is activated, even though I’m connecting with FF3 (yes, I checked help/about to be sure)

  28. tolearnfree says:

    hii friend, may you give me link to download chrome for linux? thanks before

  29. Michael Mais says:

    What about updating this site to “Upgrading to Firefox 4.beta in Lucid / Maverick?

    Its easy to follow, but a little out of date. Thanks

Leave a Reply

Your email address will not be published. Required fields are marked *