Tails includes an automatic mechanism to upgrade a USB stick to the latest version of Tails. When an automatic upgradeis performed, only an *upgrade package* is downloaded. The upgrade package contains all the changes made to Tails since Tails was first installed or was last manually upgraded.
After starting Tailsand connecting to Tor, *Tails Upgrader* automatically checks if upgrades are available and then proposes you to upgrade your USB stick. The upgrades are checked for and downloaded through Tor.
<p>If you cannot upgrade at startup (for example, if you have no network connection by then), you can start <i>Tails Upgrader</i> later by opening a terminal and executing the following command:</p>
You want to upgrade by cloning from another TailsUSB stick which is already up-to-date, for example, when working offline or with a slow Internet connection.
<span class="hide">[[!toggle id="why_extra" text=""]]</span> <p>It is currently impossible to manually upgrade a TailsUSB stick while running from itself. This scenario requires creating an intermediary Tails on another USB stick, from which to upgrade your Tails.</p>