Did Firefox create a new folder on your desktop named Old Firefox Data, which contains at least one semi-randomly named folder containing freshly updated files? If so, that would contain the bookmark backup files you could use to restore your bookmarks. Step 1 is to check for that folder and drill down into the '''bookmarkbackups''' folder and find the latest backups. I suggest copying the two most recent to the desktop, as that will be a bit easier in the following steps. Step 2 is to consider whether you bookmarked anything between the time you lost your old bookmarks and now that is essential to save. Because the Restore feature is a complete replacement for your current set of bookmarks. In that case, you could '''export''' the current bookmarks to an HTML file for future importation. See: [[Export Firefox bookmarks to an HTML file to back up or transfer bookmarks]]. Step 3 is to restore. See the following article. You'll click "Choose File" and then point Firefox to your desktop and try the most recent backup file. [[Restore bookmarks from backup or move them to another computer]] Success? Step 4 - OPTIONAL - if you created an export file in Step 2, you can import it now: [[Import Bookmarks from an HTML file]]. An Imported Bookmarks folder will appear either on your Bookmarks Menu or under Other Bookmarks. Does that work?

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