Updating
Updates are free and come through the Unity Package Manager.
Back up first
Always commit to version control or copy your project before updating. If you changed any of the asset's own files, the update may overwrite them.
How to update
- Open Window > Package Management > Package Manager.
- Select My Assets, then the asset.
- Select Update, then Import.
Keeping your changes safe
Avoid editing the asset's files directly. Instead, duplicate prefabs, scriptable objects and scenes into your own folder and change the copies. Updates then won't touch your work.