If you uploaded all of the ZPanel 10.1.1 files, then it should be here:
c:/zpanel/panel/etc/build/config_packs/ms_windows/zpanelx-update/10-1-1
Also available on GitHub here:
https://github.com/zpanel/zpanelx/tree/m...ate/10-1-1
Did you grab the zip from this page to do the upgrade:
https://github.com/zpanel/zpanelx
It is a manual upgrade process for Windows...