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I'm using 64-bit Ubuntu 12.04 LTS on my machine.

Currently, I'm using Mozilla Firefox 33.0(Mozilla Firefox for Ubuntu canonical - 1.0)

I'm not getting update option in menu Hrml->About Firefox but on when I visit few sites a pop-up appears at top of the browser window that asks me to update my current browser since it has become outdated.

But I don't know how to update my Firefox browser without Update link in Help->About Firefox menu.

Please provide me the best, effective and efficient solution on it.

Thanks in advance.

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    Have you tried sudo apt-get upgrade? – user323419 Dec 13 '14 at 6:33
  • @DonaldBrown:No, but what will that do? – PHPLover Dec 13 '14 at 6:35
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    It will upgrade all out-dated software securely according to your /etc/apt/sources.list file, which contains Firefox and other system software. Edit: Also, if you could elaborate as to which sites this is an issue on, that would be helpful. Some sites these days just don't support Firefox for some silly reasons. – user323419 Dec 13 '14 at 6:36
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    no . it will update installed packages . you can use sudo apt-get install firefox for updating firefox alone. – krizna Dec 13 '14 at 7:08
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    @PHPLover A fresh install is the best possible way. Backup all your data beforehand! – Rohith Madhavan Dec 13 '14 at 8:15
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You should find out what the latest packages available are, by first running:

sudo apt-get update

and then install the latest firefox:

sudo apt-get install firefox

Or you could install the latest "everything" with:

sudo apt-get upgrade

Ubuntu should have an updater (don't remember exact name) that checks for and asks you about installing (or optionally automatically installs) newer packages/software. Is yours not running or set to keep quiet?

And there's also apt-get dist-upgrade that upgrades Ubuntu to a newer release, but it's traditionally less reliable than a fresh install.

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    Don't forget to sudo apt-get update && sudo apt-get upgrade from time to time to get the most up-to-date software. – earthmeLon Jan 15 '17 at 3:58
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  1. Download the Latest Firefox version from here

  2. Move this folder to /opt/

  3. Open your terminal and type "./firefox"

  4. Voila! Your New Firefox Version is running.

  5. If you want to make this the default browser first go to /usr/bin and rename the previous version's Firefox executable to firefox-old and then move the new Firefox executable in /usr/bin

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Remove old version firefox from ubuntu using "softwarecenter", then again install firefox from "softwarecenter". It will automatically update firefox(only).

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