S25FS512SAGNFI011 Nor flash for Arria 10 configuration

Hi,
if you are able to program and verify an AS configuration flash through Quartus programmer, it should be only a small step to make the FPGA load the configuration. There are however many possible reasons for failure. Unless configuration is known to work with an officially supported flash device, I'm not even sure if the problem is device related. If you have selected ASx4 mode, you can go one step back and try ASx1 .jic first. Ultimately tap flash interface with a logic analyzer and check how configuration fails.