Some versions of Linux may not be compatible with the latest Firefox. I was about to explain about Firefox ESR then realised RaspberyPi will be more like a smartphone and use the ARM type of Firefox not the standard Desktop builds.

Assuming your Linux does support recent builds you should be able to install an updated Release of Firefox. If you are using the Debian Raspbian then this post should help you.

• Raspberry Pi Guide: Firefox Release on Raspbian Jessie
  https://www.raspberrypi.org/forums/viewtopic.php?t=153853

by schwarzr » Fri Jul 08, 2016 8:05 pm
A clean way to install the Firefox Release (currently version 50) on Raspbian. The package is specifically compiled and optimized for Raspbian distribution, not Ubuntu nor Debian. It should run under Raspbian Jessie on all Raspberry Pi boards, including Raspberry Pi-1.

Simply add the "q4os-extra" repository from the Q4OS site and install "firefox" package. Follow terminal commands:

Code:

   echo 'deb http://q4os.org/qextrepo q4os-rpi-firefox-cn main' | sudo tee /etc/apt/sources.list.d/qextrepo.list
   wget -nv -O- http://q4os.org/qextrepo/q4a-q4os.gpg.pub | sudo apt-key add -
   sudo apt-get update
   sudo apt-get install firefox

(I'm gonna cop it for this, but sorry I am not that smart.)

I am running Jessie on my RPI. I have done the usual "sudo apt-get update" and "upgrade" commands. It is still version 45.9

I am not sure what the code you posted at the bottom of your reply means. I am not really a linux person. As much as I am using it more and more. I am getting sick of the M$ stuff/rubbish, and the machine boots in a viable time compared to the M$ ones.

I'll give the code a go, but fear that as it is "deb" it could cause problems with the Jessie install.

(Um, actually I may hang off and wait your reply, because I already have firefox installed. So I am not sure how it will all "work out".)

Sorry I just do not have enough knowledge about Raspbi to be able to give useful help.

I often use Linux Debian Jessie as the default OS on my Firefox Desktop PCs & Laptops.

Things may be slightly different there as those are AMD rather than ARM devices. Historically Debian used its own builds of Firefox and they were for a number of years branded as Iceweasel. A big difference is that on AMD devices the ESR channel of Firefox is available. On Debian & on Ubuntu which is Debian based there are other Debian repositories available for different Firefox channels, and there are also Mozilla builds of Firefox available. But to complicate matters a RPI is going to be more like a smartphone than a desktop PC in the type of builds it needs.

I do know on smartphones or desktop PCs it is easy to install multiple versions of Firefox. You may have the choice of installing multiple versions on a RPI, or you may for some reason have to choose between a particular single repository. I just do not know much about the RPI. I do sometimes toy with the idea of buying one, I recall at one time they were even giving them away free with magazines, but costs probably escalate once you add interface boards, cases & screens in to the equation.

We do not get many questions here about the Raspberry Pi. This advanced search:

• https://support.mozilla.org/search/advanced?q=raspberry&a=1&w=2
  { /search/advanced?q=raspberry&a=1&w=2 }

No guarantee how long the link will work for we are using old forum software at the moment and the link may only work on that. The above search finds quite a few posts {ca30}, some may have useful information in them.

• This forum software's standard search will not currently find any hits as it hides|filters out, older and unsolved posts
  https://support.mozilla.org/search?q=raspberry /search?q=raspberry

I have put a second link in brackets after the initial search links. We will soon be migrating back to the new software with a bit of luck these posts will get retained and migrated back, maybe one set of those links will convert successfully and somehow work on the new software. (Unfortunately the new software has some serious unsolved issues with searching so no guarantee. If you find an interesting post now it may be an idea to make notes of its content or copy it in case it can not be found later on)

You will probably find better answers if you ask your Raspbi questions on the Raspberry or Raspbian forums

• https://www.raspberrypi.org/forums/
  • Raspbian https://www.raspberrypi.org/forums/viewforum.php?f=66

If you do ask a question over there about this subject feel free to add a link in this thread to your new post so others may follow your progress.

Question & Thought to self: I wonder if we should mention Raspbery Pi use in KB articles or have a sub section for Raspbi questions ?

• Any idea how many installs there are of Firefox on Raspberrys ?
  I suppose Firefox is the default browser on Raspberries and there are probably millions of installs.
  • Any idea of links that demonstrate the numbers involved ?