hello, firefox is making backups of your bookmarks for the last 5 days - see if you can restore it that way - https://support.mozilla.org/en-US/kb/Backing-up-restoring-bookmarks#w_res...

Do you mean that your Bookmarks' icons are not displaying ??

This extension has a feature to restore missing Favicons -> CheckPlaces

• https://addons.mozilla.org/en-US/firefox/addon/checkplaces/

Check and tell if its working.

Do you mean the icon on the desktop or task bar?

Try to rebuild the Windows icon cache.

• Open the Task Manager (Shift+Ctrl+ESC)
• In the Process tab, right-click on the Explorer.exe process and select End Process.
• Open the file picker via "File > New Task (Run)" and click the Browse button.
• Type or Paste %USERPROFILE%\AppData\Local in the File name field (AppData is a hidden folder).
• Select the file IconCache.db and use Delete in the right-click context menu to delete the file.
• After the IconCache.db has been deleted, start a new explorer.exe process via "File > New Task" to get the desktop and Taskbar back.

thank's all for the answer,,

Do you meant to say that your problem is now resolved ??

What was your real problem anyway ?? Can you describe your issue more clearly (with some more words) ??