Need help on Remote system upgrade of CYCLONE III..urgent

Thanks a lot for the reply MSchmitt.....

Sorry i dint get you, My SOF1 is the factory FPGA image itself which is flashed at the EPCS flash address 0x00000000. Hence whenever powercycle is given, The SOF1 factory image loads, a software application of the SOF1 is then loaded by the bootloader. This software application of mine triggers a reconfiguration at the EPCS flash address 0x000A0000 where my Application FPGA image(SOF2) is present. After reconfiguration the SOF2 is configured in the FPGA, then an software application of SOF2 is loaded in RAM. In this software application i want to write a logic to configure back the SOF1 factory FPGA image. How can i do this?