My things will be straigtforward

  1. sudo apt-get update
  2. sudo apt-get upgrade
  3. sudo apt get install iceweasel
  • It would be very useful to know what error message you are receiving (if any).
    – Ficertyn
    Mar 4, 2016 at 22:30
  • apt and apt-get are different commands. Last one should be sudo apt install iceweasel. apt-get is legacy, prefer apt. Mar 4, 2016 at 22:32

2 Answers 2


The way I did it was I went here, the instructions were to run:

aptitude install iceweasel   

But I got a message saying it must be run as root so I ran:

sudo aptitude install iceweasel  

And Iceweasel was installed.

  • Iceweasel is not Mozilla Firefox. It is a fork of Mozilla Firefox, but they are not the same thing.
    – Jacobm001
    Mar 5, 2016 at 0:09
  • For further details see Wikipedia but it came about because the Mozilla branding is incompatible with Debian Free Software Guidelines. Note that IceWeasel and IceDove (the Thunderbird re-branded EMail client) do not offer updates via the Help menu option but via the package management system - and that add-ons installed via the latter are not up-datable via the built-in add-on updater. You may wish to install add-ons from the application not the package system...!
    – SlySven
    Mar 5, 2016 at 13:53
  • @jacobm001 i know that iceweasel and mozilla are different but that is the command it said to run and thats what i ran and it worked. but it was commented with #, so i believe it wouldn't actully do anything.
    – sir_ian
    Mar 5, 2016 at 20:33
  • You are correct, it doesn't do anything. I would still prefer it was removed from the post since it's wrong.
    – Jacobm001
    Mar 5, 2016 at 21:50
  • alright i wil remove it.
    – sir_ian
    Mar 5, 2016 at 22:20

As an update to this Iceweasel is no longer available. Attempting to install it will instead install Firefox. The package for Iceweasel was discontinued in February of 2016. For more information on this please see this thread.

To install Firefox start by running:

sudo apt-get update && apt-get upgrade

Followed by:

sudo apt-get icesweasel

This will install Firefox not Iceweasel.

To install the latest beta version of Firefox:

sudo nano /etc/apt/sources.list

In the file add the following lines of code:

deb http://ppa.launchpad.net/ubuntu-mozilla-security/ppa/ubuntu trusty main 
deb-src http://ppa.launchpad.net/ubuntu-mozilla-security/ppa/ubuntu trusty main
deb http://ppa.launchpad.net/mozillateam/thunderbird-next/ubuntu trusty main 
deb-src http://ppa.launchpad.net/mozillateam/thunderbird-next/ubuntu trusty main

Then save the file with exiting. The following command installs Firefox and Thunderbird:

sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys A6DCF7707EBC211F && sudo apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 9BDB3D89CE49EC21 && sudo apt-get update && sudo apt-get install firefox thunderbird

The second method will only work with a Pi 2 or a Pi 3. For more information see here.

  • In the second command, it is sudo apt-get install iceweasel
    – user72982
    Dec 22, 2017 at 14:21

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