Change about:config settings via mac terminal

Hello,
I administer over 140 mac computers, all with firefox installed. Unfortunately it seems like a daily occurance when a user calls and says that firefox is bugging them to update, which they cant because they are not admin accounts.
Now I use apple remote desktop to turn off auto-update for a lot of other applications like software update, microsoft office, and adobe. Unfortunately since firefox doesnt use a standard plist file on the mac I cant use default to write the preference remotely.
Question: Is there a way to write to the firefox config via command line so I can turn off auto-update in mass instead of having to touch each computer and make the change in the GUI?
thanks!

Use a mozilla.cfg file in the Firefox program folder to lock prefs or specify default values.
Place a file local-settings.js in the defaults/pref folder where you also find the file channel-prefs.js to specify using mozilla.cfg.
pref("general.config.filename", "mozilla.cfg");
pref("general.config.obscure_value", 0); // use this to disable the byte-shift
See:
* http://kb.mozillazine.org/Locking_preferences
You can use these functions in mozilla.cfg:
defaultPref(); // set new default value
pref(); // set pref, but allow changes in current session
lockPref(); // lock pref, disallow changes
lockPref("app.update.enabled", false);
*http://kb.mozillazine.org/app.update.enabled

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http://webdesigns.ms11.net/chromeditp.html

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Really appreciate all the hard work creating updates but every time I update I lose my about:config settings, especially the browser.tab ones that I rely on. Specifically I use non-default settings on InsertRelatedAfterCurrent and all the warning ones. (I never want to be warned). I also use the Tabs on Bottom plugin which also has to be reinstalled after major updates. I run Firefox on at least 4 separate machines so it is a rather huge headache to have to reconfigure after each update. Is there a way to tell Firefox to update but don't change my settings back to defaults?
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(I'm not very good at English, if you don't understand something of my problem description please tell me).
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*http://kb.mozillazine.org/about:config

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* https://support.mozilla.com/kb/Safe+Mode
* [[Troubleshooting extensions and themes]]
If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.
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*http://kb.mozillazine.org/user.js_file

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[https://developer.mozilla.org/en-US/docs/Mozilla/Preferences/A_brief_guide_to_Mozilla_preferences A Brief Guide to Mozilla Preferences - MDN]

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Are you experiencing this issue with another browser?

Change about:config settings via mac terminal

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