The advantages of this techniqueautomatic upgrades are the following:

The advantages of automatic upgrades are the following:

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

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

- A Tails USB stick.

- A Tails USB stick

- An Internet connection.

- An Internet connection

[[!img system.png link="no" class="svg" alt=""]]

[[!img system.png link="no" class="svg" alt=""]]

- The upgrade to 4.7 is 181 MB.

- The upgrade to 4.8 is 347 MB.

- The upgrade to 4.9 is 418 MB.

[[!img incremental.png link="no" class="svg" alt=""]]

[[!img incremental.png link="no" class="svg" alt=""]]

[[!img manual.png link="no" class="svg" alt=""]]

[[!img manual.png link="no" class="svg" alt=""]]

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

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

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:

there is not enough free space on the Tails system partition

there is not enough free space on the Tails system partition

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

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

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

- [[CUpgrade by cloning from another Tails|doc/upgrade/#clone]] (below)

- [[Upgrade by cloning from another Tails|doc/upgrade/#clone]] (below)

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

- Your Tails USB stick

- Your Tails USB stick

- ½ hour to upgrade

- ½ hour to upgrade

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