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To check which version of Tails you are currently running, choose **Apps&nbsp;▸ Tails&nbsp;▸ About Tails**.

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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, *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.

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The advantages of automatic upgrades are the following:

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

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A Tails USB stick

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An Internet connection

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

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

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

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

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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.

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<h1 id="manual">Manual upgrade using <i>Tails Cloner</i></h1>

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

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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:

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

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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.

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

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<p>You can also do a manual upgrade to reduce the size of future automatic
upgrades.</p>

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<p>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.</p>