What is the best way to update when service?

Release: 2.0.9.109 (Canary) 2024-11-06 looks a little buggy, but one before it looks fairly stable.

You still need to get your service configuration however you do services, e.g. services.msc GUI.
CLI would (I think) be sc qc duplicati. Basically, beware of any custom options that you use.

The other question is whether the path is a normal Program Files one, or points to some update. Normal path can probably be left alone (along with its options). One to update must be changed.