These are some general instructions for upgrading plugins. If a plugin you're upgrading contains specific upgrading instructions, follow those.
- Always backup of your database in case something goes wrong during the upgrade (highly unlikely, but just to be safe). For instructions, see Backing up an Omeka Database.
- Deactivate the specific plugin you're upgrading in Settings > Plugins of the administrative panel.
- Download and unzip your copy of the latest version of the plugin.
- Copy the new plugin files and directories into your plugins directory
- Reactivate the plugin in Settings > Plugins in the admin panel.