Upgrade (Admin Tools)
Only available if typo3/cms-install is installed with system maintainer permissions.
The backend module Admin Tools > Upgrade offers tools to system maintainers that are useful during Major upgrades (TYPO3 explained).
The tools listed here are mainly used during Major Upgrades of the TYPO3 Core or a third party extension.
Some tools can also be used to access the quality of custom TYPO3 extensions.
See also
There are also a number of Third-party tools useful during upgrade.
Table of contents
Core updater
In classic mode TYPO3 installations that fulfil certain criteria you can use this function to automatically do patch level TYPO3 Core updates.