You should send any feedback about these changes to http://input.mozilla.org/feedback since putting the feedback here is useless. Firefox developers collect data submitted through there then present it at the weekly Firefox meeting. There was a previous way by going through the Options menu but after disabling it through there, when you would go to Help > About Firefox, it would update regardless of that setting. You can set these prefs in <code>about:config</code> to disable automatic updating:<br> app.update.auto - false<br> app.update.enabled - false<br> app.update.silent - false<br> If you really wish to downgrade, you can do that through the [[Install an older version of Firefox]] link.<br> However, I recommend you try to use these add-ons to help customize 29. <br> Here are a few suggestions for restoring the old design. I hope you’ll find one that works for you: *Use the [https://addons.mozilla.org/en-US/firefox/addon/classicthemerestorer/ Classic Theme Restorer] to bring back the old design. Learn more here: [[How to make the new Firefox look like the old Firefox]] *Use the [https://addons.mozilla.org/en-US/firefox/addon/the-addon-bar/ Add-on Bar Restored] to bring back the add-on bar. Learn more here: [[What happened to the Add-on Bar?]]