I have a wire jumping the two pins as seen in the Firmware Programmer page of the wiki, and It looks like it's coming up in DFU mode (I see "DFU in FS Mode" under "Other devices" in Device Manager), but for some reason the ISP Programmer can't see the device. Am I missing something?
I have tried jumpering both S0 and S1. That is the only jumper (minus the bootloader wire) on the board.