How to edit locked properties in firefox about:config

Question

I want to stop firefox from updating manually

 1. Tried to make the app.update.url as empty string, but it doesn't work. 
 2. Tried installing in some other folder rather than C:/ProgramFiles so that
    Automatically Install Updates option is not greyed out in Options>Advanced, but no success.
 3. Tried looking at prefs.js but the options which are locked in about:config don't 
    even appear in that file.

Tired of uninstalling and reinstalling firefox again and again. Does anyone know how to edit locked properties like app.update.auto and app.update.enable in about:config??

Answer 1

I met same problem when I was trying to toggle App.update.enabled which was locked. There are two places you need to search. 1. Firefox Profile_folder

2. Firefox installation folder, like %PROGRAMFILES%\Mozilla Firefox

To me, I found below string in one .cfg file, and after modify it, the lock flag gone.

"app.update.auto": {
  "value": false,
  "locked": true
},

I think it also applies to your problem.

Ref: http://www.updatefreezer.org/index.php?id=22 http://kb.mozillazine.org/Locking_preferences https://www.jamf.com/jamf-nation/discussions/13484/deploying-firefox-with-updates-disabled