Can't Access Jtag Chain, No device was deteced

If all is as you say then I suspect that one or more of the power supply pins does not have power.

Have ALL the power pins been connected correctly in the schematic? Have they ALL been connected up on the PCB? Are you confident that your board has been assembled correctly?

The fact nSTATUS remains low is not good. If you look at any of the configuration timing diagrams, nSTATUS always follows nCONFIG - unless you specifically hold nSTATUS low. I doubt you're doing that - are you? I suspect you've just connected a pull up to it.

How is DCLK connected? If all MSEL pins are tied low you're in FPP configuration mode (regardless of whether you use it or not). So, DCLK is an input signal. It should not be left floating. Tie it high or low.

Cheers,

Alex