History of Profiles - Where Firefox stores your bookmarks, passwords and other user data
سلام چگونه میتوانم اطلاعات از دست رفته را باز گردانم به یک ماه قبل اپدیت
Hi farid, Firefox does not keep a backup of the full profile folder.
Firefox does make bookmark backups when you add/delete bookmarks, but only for a couple of weeks. You can see the available backups using the steps in this article: Restore bookmarks from backup or move them to another computer.
By the way, if your entire Firefox setup changed all at once, it's possible that you are using a new profile and can still switch to the old one. Please see this article: Profile Manager - Create, remove or switch Firefox profiles (please do not use "Remove").