This question already has an answer here:

Currently I am running FF56 on Ubuntu 16.04. Despite the cool new stuff in FF57, I can't update because some extensions I regularly use won't be compatible, and there are no similar compatible extensions available.

But I do want to keep up on security updates. I hate to go back to FF52, but the only option I can see is to downgrade FF56 to FF52esr. The file available from Mozilla for 32-bit en-US is "firefox-52.5.0esr.tar.bz2".

I realize there are other questions that deal with handling installations using this kind of archive, however I was hoping someone could write a procedure for this specific situation, as it may be commonly needed for those wishing to retain FF57 incompatible extensions.

marked as duplicate by muru, Fabby, DK Bose, pomsky, karel Nov 16 '17 at 8:47

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • why not stay with v56? – ravery Nov 16 '17 at 4:02
  • 1
    @ravery To keep up to date with future security updates, since I don't know the update future of some extensions. – user3169 Nov 16 '17 at 4:03
  • The "kind of archive" is similar to ZIP or RAR. You don't install that file, you install its contents by extracting it then following instructions either from the website or some "readme" file inside. Too much trouble, I wager, just to keep using extensions that don't work in newer version for a reason. – user692175 Nov 16 '17 at 4:56