Using FPP mode in Quartus II for Cyclone IV devices

Thanks for the link - unfortunately I already looked at this in my initial search and it is not helpful. While it provides a lot of information about the approach we are taking, and gives instructions for converting the sof file to a pof file, it does not say what to do in my situation where the desired programming mode (FPP) does not appear in the mode drop down menu. I really think there must be a setting somewhere in the software that is preventing the programmer from using FPP, but I have looked everywhere and cannot find it.