When using the command line installer hdbinst, you can reduce installation anxiety even more by running the command with the -b for batch parameter and the tool will make any decision for you using the (documented) default selections.
When using the Windows installer hdbsetup, you will have to decide whether to install or update, click Next and then click Install or Update corresponding to your first selection.
Installing or updating the SAP HANA client takes 20 seconds, if that, and is very easy to do.
