Hi Eeyong,
Haspdinst.exe and hasp_update_x64.exe have different operations and are independent of each other.
Haspdinst can be used to install/uninstall the drivers.
Hasp_update can be used to install the license.
Uninstalling the drivers will not remove any installed license.All existing licenses will still be active when drivers are installed again.
Regards,
Ashish