> ## Documentation Index
> Fetch the complete documentation index at: https://docs.t3planet.de/en/latest/llms.txt
> Use this file to discover all available pages before exploring further.

# Upgrade Guide

> Upgrade guide for T3AI (EXT:ns_t3ai) in TYPO3.

## T3AI v1 to v3

Follow our standard update guide [https://docs.t3planet.de/en/latest/License/UpdateVersion/Index.html](/en/latest/en/latest/License/UpdateVersion/Index)

## T3AI v3 to v4

T3AI’s v4 is a completely revamped and redeveloped TYPO3 extension. Please follow the steps below to upgrade:

* Step 0. Install and configure T3AF (`EXT:ns_t3af`) before reinstalling T3AI.
* Step 1. Deactivate the license key from the License Manager module.
* Step 2. Uninstall and delete the extension.
* Step 3. Consider fresh new installation the extension from [https://docs.t3planet.de/en/latest/License/LicenseActivation/Index.html](/en/latest/en/latest/License/LicenseActivation/Index)

After reinstalling T3AI, clear TYPO3 caches and verify that T3AF provider setup is complete before testing the extension.