Bookmarks/History are in the same folder in your Profile : *bookmarks and history: places.sqlite If you use the Time Machine then try to restore the places.sqlite file from that backup. *http://www.apple.com/support/timemachine/ You can use this button to go to the currently used Firefox profile folder: *Help > Troubleshooting Information > Profile Directory: Show Folder (Linux: Open Directory; Mac: Show in Finder) *http://kb.mozillazine.org/Profile_folder_-_Firefox *https://support.mozilla.org/kb/Recovering+important+data+from+an+old+profile http://kb.mozillazine.org/Transferring_data_to_a_new_profile_-_Firefox Always : *https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer *https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles Please let us know if this solved your issue or if need further assistance.