Patching on SAP GUI Clients

I have setup a GUI Server in my landscape... I have also configured a package and created a single installer (Right click and Configure Single file installer). Now, I have written a batch script on the server that will execute some commands in addition to executing this single installer package remotely. The setup works fine.. and I'm able to install the GUI on my remote machines.

Can someone suggest me what is the best way to allow patching ? Say, suppose I have a single installer (GUI.exe) with SAPGUI 7.2 patch 9 and I want to give patch 10... How should I go about ?