Is there a way to combine sof and elf files ?

Thanks Michael !!

One more thing, do I 'have' to configure my on chip memory as a 'ROM', I am currently leaving it as a RAM and after my SOPC design updation (modification of the onchip mem to require a mem init file) the hex file is not generated where it shd be. From what I have heard, a blank hex file is generated which needs to be modified later, not the same thing in my case.

This is what I did:

1. Modified the SOPC design (to require a mem init file in hex format), generated the new design

2. Placed the new ptf in my Nios design and generated a new elf

3. Converted the elf2hex, and placed that hex where all the other hex are placed in the quartus design

4. Recompiled Quartus design and dnld the new sof to the flash

Result: No changes in sof, the programmer just says that the checksum matches the prev sof file so that definitely means that the sof didnt get the new mem content that I wanted it to get... comments ??