Hi, as far as I know even changing things in about:config it will still be force updated. Though you can check the solution from this question : https://support.mozilla.org/en-US/questions/1186421

Please let us know if this solved your issue or if need further assistance.

Fyi : https://betanews.com/2018/03/19/mozilla-firefox-snap-linux/ Also Firefox 57+ can be customized over 235million ways : USSER CHROME URL'S

• https://www.howtogeek.com/334716/how-to-customize-firefoxs-user-interface-with-userchrome.css/
• http://techdows.com/2017/09/classic-theme-restorer-userchrome-css-modify-firefox-57-photon-ui.html
• https://github.com/Aris-t2/CustomCSSforFx/issues/1
• https://www.accessfirefox.org/Theme-Font-Size-Changer.php
• https://www.userchrome.org/
• https://www.accessfirefox.org/Firefox_Accessibility_Themes.php
• https://www.userchrome.org/what-is-userchrome-css.html
• http://kb.mozillazine.org/UserChrome.css
• https://github.com/axydavid/FirefoxUI/blob/master/README.md
• https://github.com/wilfredwee/photon-australis
• https://www.reddit.com/r/FirefoxCSS/

Note not all code in one place. Please let us know if this solved your issue or if need further assistance.

brando130 said

I have purged the old version from Ubuntu, but when I fire up the old version with ./firefox, it immediately downloads the new version and upgrades. I can go into preferences and change to "Never check for updates..." but too late. Done deal. My question is: How can I run Firefox v.56 more than once with no upgrade? This is a very specific question. My question is NOT: 1) Are security updates important and do you think I should just use the new Firefox instead? 2) Are most of my favorite extensions supported in Quantum? 3) Should I use Firefox ESR instead? I want to run Firefox 56. No reply mentioning any alternative is necessary. Thank you very much for any help.

Just running Firefox with the ./firefox will have Firefox make use of whatever Profile you last used.

https://support.mozilla.org/en-US/kb/profile-manager-create-and-remove-firefox-profiles

While this article is more for Windows the method is much the same in editing the command on a launcher shortcut on Linux. http://kb.mozillazine.org/Shortcut_to_a_specific_profile

OK, thank you. I seem to be where I want for now. I deleted all versions of Firefox and deleted .mozilla from /home, then I disabled the internet while I loaded Firefox 56 and disabled updates per the thread linked by Pkshadow. I confirmed those changes in about:config

Tried a few restarts with the internet back on. So far, so good.

Also, noticing that even FF 56 has the option to "Allow Firefox to install and run studies" turned on by default, I'd like to add that the increasingly untrustworthy behavior of Mozilla is at the heart of why I won't be going past FF 56.

While privacy is a top talking point for Mozilla's marketing department, the realities of the Increased "telemetrics", Pocket as a hard-coded feature, the whole Mr. Robot crap, Mozilla has just lost my trust. It's not enough to allow me to "disable" and "opt-out", especially after the fact.

When I'm done with FF 56, that will be it for a while. But who knows, I've quit FF years before and came back later.

Thanks for the help!

Hi, studies are run for short duration's only then deleted. These may have to do with new functions such as the new Sandbox that runs in 57+ etc.. Article today on that. That opt-in is very low amount so it is opt-out in North America. Europe has stricter laws, that is for you to contact people for change.

https://help.getpocket.com/article/1025-disabling-pocket-in-firefox

Pkshadow said

studies are run for short duration's only then deleted.

That's nice.

...and it would be good info, when asking the user if they want to particpate. Not asking the user if they want to participate is, in my opinion, untrustworthy behavior for a company in a position to access my data.

brando130 said

Pkshadow said

studies are run for short duration's only then deleted.

That's nice.

...and it would be good info, when asking the user if they want to particpate. Not asking the user if they want to participate is, in my opinion, untrustworthy behavior for a company in a position to access my data.

Yes it would but as said participation is low. https://www.theregister.co.uk/2018/03/20/mozilla_firefox_test_of_privacy_mechanism_prompts_privacy_worries/

Firefox Volunteer Support can not do anything about this issue. To submit suggestions for new or changed features, may I suggest: Feedback: https://qsurvey.mozilla.com/s3/FirefoxInput/ Contact your State and Fed Representatives.

Please let us know if this solved your issue or if need further assistance.

You can install Firefox in a location (/usr/local/) that requires root permissions to prevent Firefox from updating.