Programming fail with this message : Error (209031): Device chain in Chain Description File does not match physical device chain -- expected 1 device(s) but found 2 device(s). Don't know how to fix

Thanks. I’ll go thru this. A couple of things: In trying find part and device names I found the BOM does not match the board I have. I have EPCQ 128A instead of the EPCQ64 listed in the BOM. BURRIED in a note in the user manual is a statement “When using SFL core and Intel Quartus Prime Programmer to program/erase the EPCQ64 flash, Virtual JTAG must be bypassed that set SW1.4 to ON. Signal Net VTAP_BYPASSn is logic 0.” Now some of this is gibberish (I’m just starting this stuff) but I tried flipping that DIP switch and it worked ! So I don’t need to include a .cdf (for now). I would not have looked in that section of the doc if not for your help. So THANKS ! Mark KU3O