Exit Zen
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[[!meta title="Upgrading a Tails USB stick"]]
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Tails includes an automatic mechanism to upgrade a USB stick to the latest version of Tails. When an automatic upgrade is 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.
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In some cases, it is impossible to do an **automatic upgrade** and you might have to do a **manual upgrade**. This page describes both techniques.
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<p>Your Persistent Storage will be preserved by both automatic and
manual upgrades.</p>
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If you use Tails from a DVD, you need to [[burn a new DVD|install/dvd]].
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<h1 id="check-version">Checking which version of Tails you are currently running</h1>
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<h1 id="automatic">Automatic upgrade using <i>Tails Upgrader</i></h1>
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After starting Tails and connecting to Tor, <span class="application">Tails
Upgrader</span> automatically checks if upgrades are available and then
proposes you to upgrade your USB stick. The upgrades are checked for and downloaded
through Tor.
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The advantages of automatic upgrades are the following:
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You only need a single Tails USB stick. The upgrade is done on the fly from a running Tails. After upgrading, you can restart and use the new version.
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- The upgrade is much smaller to download than a full USB image.
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The upgrade mechanism includes cryptographic verification of the upgrade. You don't have to verify the USB image yourself anymore.
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Requirements:
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- A Tails USB stick
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- An Internet connection
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After connecting to Tor, if an upgrade is available, a dialog appears and proposes you to upgrade your USB stick.
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[[!img upgrader_automatic.png link=no]]
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If you decide to do the upgrade, click on <span
class="guilabel">Upgrade now</span>,
and follow the assistant through the upgrade process.
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<p>If you cannot upgrade at startup (for example, if you have no network
connection by then), you can start <span class="application">Tails
Upgrader</span> later by opening a terminal and executing the following
command:</p>
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<pre>tails-upgrade-frontend-wrapper</pre>
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