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Firefox manual update with Linux Ubuntu

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I have a System 76 laptop running Ubuntu 14.04 LTS. The LTS (Long Term Support) ended years ago with Firefox 66. All of that works fine still. My problem is: 1. The world is telling me to upgrade my browser. 2. Mozilla tells me "Note: If you use your Linux distribution's packaged version of Firefox, you will need to wait for an updated package to be released to its package repository. This article only applies if you installed Firefox manually (without using your distribution's package manager)." 3. There will never be an updated package because LTS has ended. 4. IS THERE A WAY TO MANUALLY INSTALL A NEWER BROWSER LIKE FIREFOX 123?

I have a System 76 laptop running Ubuntu 14.04 LTS. The LTS (Long Term Support) ended years ago with Firefox 66. All of that works fine still. My problem is: 1. The world is telling me to upgrade my browser. 2. Mozilla tells me "Note: If you use your Linux distribution's packaged version of Firefox, you will need to wait for an updated package to be released to its package repository. This article only applies if you installed Firefox manually (without using your distribution's package manager)." 3. There will never be an updated package because LTS has ended. 4. IS THERE A WAY TO MANUALLY INSTALL A NEWER BROWSER LIKE FIREFOX 123?

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To cor-el, I do not find any script at the top right to try.

To jonzn4SUSE, I am ready to try updating my current install. The thumbdrive with ubuntu 22 and firefox 123 on it work fine in this machine when I boot from the external USB thumb drive. It is just that I have never done anything like this before and am trying to go slow, be careful, and seek good advice so I won't wish later that I had done that!

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I have same problem, but on Ubuntu 22 and Firefox slightly newer, so replace version to your downloaded ver:

1. Backup your current Firefox profile:

mkdir -p ~/Firefox_Backup cp -r ~/.mozilla/firefox ~/Firefox_Backup/

2. Extract the new F-fox archive:

tar xvjf firefox-126.0.1.tar.bz2

3.Move the new F-fox binary to the /usr/bin/ directory, overwriting the old one:

sudo mv firefox /usr/bin/

4. Restore your saved profile:

mv -n ~/Firefox_Backup/firefox/* ~/.mozilla/firefox/

5. Set correct permissions for the new F-fox binary:

sudo chmod 755 /usr/bin/firefox

6. Set correct permissions for the profile directory:

chmod -R 755 ~/.mozilla/firefox

7. Update the system's alternatives for F-fox (if it was previously installed):

sudo update-alternatives --install /usr/bin/firefox firefox /usr/bin/firefox 100 sudo update-alternatives --config firefox

8. Choose the /usr/bin/firefox option when prompted.

9. Launch the updated Firefox:

firefox

This process replaces the existing Firefox executable with the new one. Please note that this method assumes you've downloaded a standalone version of Firefox that is compatible with your Ubuntu version and architecture. If the new Firefox version is not compatible, it may cause issues or fail to run. Now, you should be running the updated Firefox version with your previous configuration on Ubuntu 22.04. As mentioned earlier, some add-ons or themes might require updates to work with the new Firefox version.

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