Upgrading the TYPO3 Core and extensions
You can find the current TYPO3 Core version in the top left of the TYPO3 backend.
Patch/bugfix updates
Patch/bugfix updates contain bugfixes and/or security updates. This section details how to install them using Composer.
Major upgrades
This chapter details how major upgrades are installed using Composer and highlights what tasks need to be carried out before and after the core is updated.
Upgrading extensions
Just like TYPO3's core, extensions also need to be regularly updated. This chapter details how to upgrade extensions using Composer.
Third-party Tools
Tools and resources developed by the community that can assist with common upgrade and maintenance tasks.
Classic mode upgrade guide
Using TYPO3 without Composer? This chapter details how to upgrade TYPO3 manually.
Applying Core patches
Learn how to apply Core patches in a future proof way: Automatize
patch application with cweagans/. Download
a patch for the Core.
Migrate a TYPO3 installation to Composer
Information on how to migrate a Classic mode installation of TYPO3 to a Composer based installation.
Migrate content
This chapter details how pages and content can be exported and then imported into another installation of TYPO3.