Tails includes an automatic mechanism to upgrade a USB stick to a newer version.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.
- 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, etc.).and so on). For example, if you get the following error message:
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:
- The automatic upgrade failed and you need to repair a TailsUSB stick.
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After connecting to Tor, a dialog informs you if you have to upgrade your USB stick using <span class="application">Tails InstallCloner</span> to a newer version of Tails.
After connecting to Tor, a dialog informs you if you have to upgrade your USB stick using <span class="application">Tails Cloner</span> to a newer version of Tails.
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<p>You can also do a manual upgrade to reduce the size of future automatic upgrades, as described [[above|upgrade#reduce]].</p>
<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>
<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>
<p>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.</p>
