Before starting the eZ Find upgrading process make sure that you have a working backup of the existing website state including database, extensions, INI settings, etc. During the upgrade process the existing eZ Find extension will be removed and replaced with a new version.
Download eZ Find from http://share.ez.no/download-develop/downloads
Make sure the extension is activated under the [ExtensionSettings] block in the "settings/site.ini.append.php" like this:
[ExtensionSettings] ActiveExtensions[]=ezfind [...]
It is important that eZ Find is activated before eZ Webin and eZ Flow, if you use those extensions, to ensure that your installation uses the correct search templates.
Next the autoload array needs to be updated for the extension. To do this, execute following command from eZ Publish root folder:
$ php bin/php/ezpgenerateautoloads.php -e -p
Clear the template override cache with following command:
php bin/php/ezcache.php --clear-id=template-override
Next re-index the content of the site by running the command:
php extension/ezfind/bin/php/updatesearchindexsolr.php -s <admin siteaccess> --clean
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