Grab Firefox Session From Flash Drive | Windows [Passwords/History]
Once copied, the user profile folder can replace an existing user profile folder on another computer and the session will restore with saved passwords, submission forms, history, and bookmark information as it was on the computer you grabbed it from.
The folder copied to your flashdrive will be something like 'dnh8gkr0.default'. To replace your own firefox user profile with the copied profile type Windows+R, then %appdata%, and hit enter.
Go to Mozilla\Firefox\Profiles\ and copy the name of your own profile (which will be something like dnh8gkr0.default) and rename the folder on your flashdrive whats on your clipboard.
Now destroy your own folder and replace it with the folder on your flashdrive. Follow all these steps and open Firefox. You will be prompted to restore session. Restore session.
Boom. Saved passwords, saved form documents and history. This is to be used only as a means to transfer your own firefox profiles Furthermore I am not responsible for your actions.