Upgrade Firefox in Ubuntu

If You are The user of Ubuntu ,Here the tips how to update your Firefox bowser.

To upgrade the Firefox version to the most recent one you have to use following command which is as follow :-

you ll need to run the usual update and upgrade commands on apt-get.
 first run Terminal
and then  use following codes
sudo add-apt-repository ppa:mozillateam/firefox-next
After that again
sudo apt-get update
sudo apt-get upgrade