Configuring a Xilinx Spartan-6 FPGA Over USB Using FX2LP in Port mode

I am trying to configure a Spartan-6 FPGA using FX2LP controller. I have read the stuff in AN63620 document from Cypress. In this document, we are using GPIF mode of FX2LP to configure the FPGA. I would like to use the default Port mode of the controller to configure the FPGA. In other words: could FX2LP just simply read the .hex FPGA configuration file provided by iMPACT Xilinx tools and then keeps track of INIT_B signal from the FPGA and shift the configuration data to the DIN serial port of the FPGA? Has anyone done that using FX2LP?

Many thanks!