help: about flash programming

hi ketan, thank you . my reset vector and exception vector were set on CFI,offset is 0x0 and 0x20. In system library properties,i set .text and .rodata in CFI and .rwdata,heap memory and stack memory in sdram. And the timing parameters were all recommend values. and i checked every other aspects you have referd to, it's no problem. But the error is still so. I don't kown why.