EPCQ Programming Issue

Hello,

We are using a Cyclone IV FPGA with an EPCQ16 Serial Configuration Device. We are programming the EPCQ through the FPGA using JTAG and USB Blaster II. We were able to successfully program the EPCS on an earlier version board:

This is what success looks like with an EPCS16 device targeted and the exact same source bitstream...

Info (209060): Started Programmer operation at Fri Apr 09 19:52:26 2021

Info (209016): Configuring device index 1

Info (209017): Device 1 contains JTAG ID code 0x020F10DD

Info (209007): Configuration succeeded -- 1 device(s) configured

Info (209018): Device 1 silicon ID is 0x14

Info (209044): Erasing ASP configuration device(s)

Info (209023): Programming device(s)

Info (209011): Successfully performed operation(s)

Info (209061): Ended Programmer operation at Fri Apr 09 19:52:51 2021

EPCQ16AS18N

Failed Programming

Info (209060): Started Programmer operation at Fri Apr 09 19:46:41 2021

Info (209016): Configuring device index 1

Info (209017): Device 1 contains JTAG ID code 0x020F10DD

Info (209007): Configuration succeeded -- 1 device(s) configured

Error (209025): Can't recognize silicon ID for device 1. A device's silicon ID is different from its JTAG ID. Verify that all cables are securely connected, select a different device, or check the power on the target system. Make sure the device pins are connected and configured correctly.

Error (209012): Operation failed

Info (209061): Ended Programmer operation at Fri Apr 09 19:46:43 2021

PCB, pin out, MSEL pins, all to spec...

Thanks for your help!