Installing Firefox 4.0 (.deb Package) On Ubuntu 10.10 - Page 2

2 Installing Firefox 4.0

Now open the Update Manager (System > Administration > Update Manager):

In the Update Manager, there should be updates listed for Firefox (under Other updates (LP-PPA-mozillateam-firefox-stable)). Check them all and click on Install Updates:

Type in your password:

Afterwards, the Firefox updates are being downloaded and installed:


3 Launching Firefox 4.0

Now start Firefox.

When Firefox 4.0 is started for the first time, it will check if the currently installed Firefox add-ons are compatible. If incompatible add-ons are found, you can check for updates by clicking on the Check Now button:

However, it is possible that no compatible updates are found for your add-ons - in this case Firefox 4.0 will check periodically and inform you when compatible updates are available. Click on Finish to finally start Firefox 4.0:

This is how Firefox 4.0 looks:

To check if this really is Firefox 4.0, go to Help > About Firefox:

As you see, this is version 4.0:


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7 Comment(s)

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By: Gunther Stricke

Parfait. Super tutoriel. Amitiés et pensées de France.


Perfect, Great explaination. 

Cheers from France.


I just did this by following your instructions.  Now using FF4 and it is working just fine.

Thank you.  Much appreciated.


By: Craig

"Please note that the PPA for Ubuntu Mozilla Daily Build Team creates daily packages for various Mozilla projects and branches; therefore it is possible that you will get beta or RC packages (that might not be stable) instead of final packages. "

Considering there are final packages out there - why are you advocating installing from Daily-Builds? 

Most users will receive unexpected updates of non-production ready code which may, likely will, break their system... souring their experience with Firefox, Linux, and Opensource in general.

Please install from final versions (or PPAs with only final fully tested versions)

By: Andson Gomes


    And how you solve the problems with authenticate keys?


By: Andson Gomes

The solution for the problem with the authenticate keys.

$ sudo apt-key adv --keyserver --recv-keys 72D340A3

By: Francisco Santos

Thanks, people!

My Mozilla Firefox 4.0.1 is already running.

Keep doing this nice job!



By: Anonymous