Is there a way to prevent Lenovo System Update from installing some Packages (like the Toolbox) when the system is running in silent mode?
I plan to only install certain packages, for instance, Toolbox or Desktop Experience, and do not wish to have the rest done.
There are several ways that you can perform a customization for this...
Create your own repository with ThinkVantage Update Retriever, and then delete the updates you don't want from your own repository.
Create a web-based repository. According to the ReadMe here Thin Installer supports web-based repositories. Please refer to the deployment guide here before trying this.