Hello, If you are worried about losing your bookmarks, you can always back them up by following this guide: * [[Export Firefox bookmarks to an HTML file to back up or transfer bookmarks]] After updating if you find that your bookmarks are lost, you can import this file: * [[Import Bookmarks from an HTML file]] You can also back up your profile information (including saved passwords) by following this guide: * [[Back up and restore information in Firefox profiles]] (for recovering your entire profile) * [[Recovering important data from an old profile]] (for recovering parts of your profile) ---------- Note that losing your information usually means that a file wasn't closed properly and was corrupted. Next time your bookmarks specifically are not recovered, try installing the [https://addons.mozilla.org/firefox/addon/places-maintenance/ Places Maintenance] extension to run maintenance on the file that stores your bookmarks/browsing history information. Please read the following articles first as they provide helpful hints and instructions that may be relevant to you: * http://kb.mozillazine.org/Bookmarks_history_and_toolbar_buttons_not_working_-_Firefox * https://support.mozilla.org/kb/Bookmarks+not+saved#w_fix-the-bookmarks-file See also: [[Recover lost or missing Bookmarks]] Let us know if that helps.