t:pref
i:/browser/app/profile/firefox.js
o:/browser/app/profile/firefox.js

+lockPref("app.update.auto", false); // Disable automatic updates
+lockPref("app.update.enabled", false); // Disable update checking
+lockPref("app.update.service.enabled", false); // Disable update service
+defaultPref("app.update.background.scheduling.enabled", false);
+lockPref("app.update.silent", false); // Disable silent updates
+lockPref("app.update.staging.enabled", false); // Disable update staging
+lockPref("app.update.backgroundErrors", 0); // Reset background error counter