cyclone V device 5CSXC6C6U23C8NES is supported in which Quartus software version?

Hi,

It may be power issue, Monitor the signals like nCE ,nStatus Conf_Done and others. Let me know the status during power state of board.

Also check the POR requirements.

Check table 10-2.

https://www.intel.com/content/dam/www/programmable/us/en/pdfs/literature/hb/cyclone-v/cv_5v2.pdf

FPGA Configuration Troubleshooter

https://www.altera.com/support/support-resources/support-centers/devices/cfg-index/fpga-configuration-troubleshooter.html

Regards

Anand