This is the directory you want to make a copy of. The leading characters will vary, but it will end in. Assuming you are only using one Firefox profile, then in this directory you should have one sub-directory called something like 29iyzdfd.Default.Change directory to where Firefox stores its configuration:.First make sure you quit Firefox, and that it is no longer running on any machine.The second thing you can do is save a copy of your whole Firefox profile. json file somewhere in your home directory, so that you'll then be able to find it later if necessary. From the 'Import and Backup' menu at the top of the manager, select 'Backup'.Open up the bookmark manager (CTRL-SHIFT-O is the keyboard shortcut).Basically you will be creating a snapshot copy of your bookmarks and settings. Be preparedДЄssuming you have a working Firefox and set of bookmarks, there are two things you should do before problems arise. If you have lost your bookmarks, or they've been corrupted, then this document hopes to give you some tips on how you may be able to recover them. The only way to make sure this doesn't happen is to remember to close Firefox each night. In most cases it seems to be related to leaving Firefox running over night, and then your AFS tokens expiring. On DICE desktops, the Firefox web browser can periodically lose its bookmarks.

Restore firefox to previous version