Extension Installer/Triggers/onAfterExtensionUpdate
From Joomla! Documentation
< Extension Installer | Triggers
The onAfterExtensionUpdate trigger occurs after the update of an extension. It has a two parameters:
- installer A copy of the installer instance that was used. This it to get access to any error messages that might have occurred.
- eid The extension ID of the installed extension. The extension ID may be either a valid numeric value (positive integer), a zero value (when the extension doesn't have a corresponding entry in the extensions table but it is valid) or false if the installation failed.