en	[[!meta title="Upgrading a Tails USB stick"]]

en	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.

en	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.

en	<div class="note">

en	Your Persistent Storage will be preserved by both automatic and manual upgrades.

en	</div>

en	If you use Tails from a DVD, you need to [[burn a new DVD|install/dvd]].

en	[[!toc levels=2]]

en	Checking which version of Tails you are currently running

en	To check which version of Tails you are currently running, choose **Apps&nbsp;▸ Tails&nbsp;▸ About Tails**.
zh-hans	Um die laufende Tails-Version herauszufinden, wählen Sie <span class="menuchoice"> **Anwendungen**&nbsp;▸ **Tails**&nbsp;▸ **Über Tails** </span>

en	In the **About Tails** utility, you can click **Check for Upgrades** to check whether a new version of Tails is available. This check is also done automatically every time you start Tails and connect to the Tor network.

en	Automatic upgrade using Tails Upgrader

en	After starting Tails and 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.

en	The advantages of automatic upgrades are the following:

en	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.

en	The upgrade is much smaller to download than a full USB image.

en	The upgrade mechanism includes cryptographic verification of the upgrade. You don't have to verify the USB image yourself anymore.

en	Requirements:

en	A Tails USB stick

en	An Internet connection

en	After connecting to Tor, if an upgrade is available, a dialog appears and proposes you to upgrade your USB stick.

en	[[!img upgrader_automatic.png class="screenshot" alt=""]]

en	If you decide to do the upgrade, click on **Upgrade now**, and follow the assistant through the upgrade process.

en	<div class="tip">

en	<p>If you cannot upgrade at startup, you can open <i>Tails Upgrader</i> later by choosing <b>Apps&nbsp;▸ Tails&nbsp;▸ About Tails</b> and clicking <b>Check for Upgrades</b>.</p>

en	Troubleshooting

en	If an error occurs while installing the upgrade, *Tails Upgrader* asks you to visit:

en	[[file:///usr/share/doc/tails/website/doc/upgrade/error/install.en.html|upgrade/error/install]]

en	If another error occur while upgrading or if your Tails USB stick fails to start after an automatic upgrade, we recommend that you do a manual upgrade instead. See below.

en	Manual upgrade using Tails Cloner

en	It might not always be possible to do an automatic upgrade as described [[above|upgrade#automatic]]. For example, when:

en	No automatic upgrade is available from our website for this version.

en	The automatic upgrade is impossible for technical reasons (not enough memory, not enough free space on the USB stick, and so on). For example, if you get the following error message:

en	there is not enough free space on the Tails system partition

en	The automatic upgrade failed and you need to repair a Tails USB stick.

en	You want to upgrade by cloning from another Tails USB stick which is already up-to-date, for example, when working offline or with a slow Internet connection.

en	After connecting to Tor, a dialog informs you if you have to upgrade your USB stick using *Tails Cloner* to a newer version of Tails.

en	[[!img upgrader_manual.png class="screenshot" alt=""]]

en	You can also do a manual upgrade to reduce the size of future automatic upgrades.

en	When doing automatic upgrades, the size of the download increases over time. If you do a manual upgrade, the size of future automatic upgrades will become smaller again.

en	We estimated that, to actually reduce the overall download size, it's only worth it to do 1 manual upgrade every year if you apply all upgrades of Tails.

en	To do a manual upgrade, you can either:

en	[[Download and upgrade|doc/upgrade/#download]] (below)

en	[[Upgrade by cloning from another Tails|doc/upgrade/#clone]] (below)
zh-hans	[[Durch Klonen von einem anderen Speichermedium aktualisieren|upgrade#clone]] auf welchem bereits eine neuere Version von Tails läuft.

en	[[Burn a new Tails DVD|install/dvd]]

en	Download and upgrade

en	You need:
zh-hans	你需要：

en	Your Tails USB stick

en	Another empty USB stick <small>(at least 8 GB)</small>&nbsp;[[!toggle id="why_extra" text="Why?"]]

en	½ hour to download Tails ([[!inline pages="inc/stable_amd64_iso_size" raw="yes" sort="age"]])

en	½ hour to upgrade

en	[[!toggleable id="why_extra" text="""

en	[[!toggle id="why_extra" text=""]] It is currently impossible to manually upgrade a Tails USB stick while running from itself. This scenario requires creating an intermediary Tails on another USB stick, from which to upgrade your Tails.

en	See our instructions on how to do a manual upgrade by:

en	[[Downloading and upgrading from your Tails|upgrade/tails]] (more secure)

en	[[Downloading and upgrading from Windows|upgrade/windows]] (more convenient)

en	[[Downloading and upgrading from macOS|upgrade/mac]] (more convenient)

en	[[Downloading and upgrading from Linux|upgrade/linux]] (more convenient)

en	<div class="caution">

en	Downloading and upgrading from Windows might be less secure if your Windows has viruses. But, it might be more convenient and faster.

en	Upgrade by cloning from another Tails

en	If you know someone you trust who already did the upgrade, you can upgrade your Tails by cloning from their Tails.

en	Another up-to-date Tails (USB stick or DVD)

en	¼ hour to upgrade

en	[[Cloning from another Tails|upgrade/clone]]
zh-hans	[[Durch Klonen von einem anderen Speichermedium aktualisieren|upgrade#clone]] auf welchem bereits eine neuere Version von Tails läuft.