Follow the steps..
- Open your Firefox Profile folder by navigating to:
C:\Documents and Settings\
- Look for signons2 and open it in any text editor.
- Copy all the data from the file and close it.
- Now look for signons3, open it in a text editor and replace its data with the copied one.
- Save the file and close it.
- Restart Firefox and all your passwords will be updated now.
