about Nios® II Boot from EPCQ or EPCS in Quartus® II 13.1

Altera installs different customized boot loaders depending on which device is in use, but without knowledge of which device you are using then its harder to make specific suggestions about the boot loader file name. As I recall an -epcq option can be used with sof2flash if its quad mode configuration but only the -epcs option is used with elf2flash even if it is epcq device and or quad serial mode configuration. I have a post related to some issues with epcs booting a nios2 on a Stratix III under 13.1 sp3.