Last year we provided a thorough guide on how you can recover lost bookmarks in Firefox, but as an anonymous reader pointed out some of the tips provided no longer work in Firefox 3. This is because Mozilla revamped the bookmarking system so that it performs better, and is also capable of more advanced functionality such as tagging. The good news is that recovering lost bookmarks in Firefox 3 is even easier than it was before!
What you need to do now is go to Bookmarks -> Organize Bookmarks -> Import and Backup -> Restore, and then select the date of one of the backups (the date is in year-month-day format). You’ll then receive a prompt asking if you’re sure you want to replace all of your existing bookmarks with those from the backup, and once you hit the OK button you’ll be all set.
Any site you’ve bookmarked since the last backup will be lost since this does replace your current bookmarks. For that reason you may want to consider performing a manual backup before proceeding with restoring your old bookmarks. This can be done using the Backup option located right above the Restore option. You’ll then be asked where you want to save the file, and restoring them is as simple as going to Restore -> Choose File.
Feel free to adjust the number of automatic bookmark backups kept by Firefox 3, which is still the same from our previous guide.