Take full backup of Firefox with a software ~ SoftBDinfo

"I reformatted my machine long back and lost with Firefox. Lot of extension saved forms, saved password and many more things....."

Now here's the solution....>>>>

MozBackup is a simple utility for creating backups of Mozilla Firefox, Mozilla Thunderbird, Mozilla Sunbird, Flock, SeaMonkey, Mozilla Suite, Spicebird, Songbird and Netscape profiles.

MozBackup is a wizard tool so, very simple in its own way.
>>>Download here<<<<
After downloading unzip it and run the MozBackup.exe from extracted folder. It will open a wizard click on next and you will get bellow screen

Select the Mozilla Firefox and click on next if you are running

Firefox it will ask you to close the Firefox so close the Firefox and click on next. On next screen it will show you all the available profiles of Firefox select desired profile (if you do not have more than one profile it will just show the default profile) and click on next. By default it will save the backup file in my document folder you can change the location with your wish.

For restoration simply run the same wizard again and this time

choose restore option instead of backup.