在FLASH下载后出现No change to device contents，是不是意味这我的一切工作都是做白工啊。。。。

#!/bin/sh
#
# This file was automatically generated by the Nios II IDE Flash Programmer.
#
# It will be overwritten when the flash programmer options change.
#

cd D:/flash3/hello_led_0/Debug

# Creating .flash file for the project
"$SOPC_KIT_NIOS2/bin/elf2flash" --base=0x00000000 --end=0x3fffff --reset=0x0 --i
nput="hello_led_0.elf" --output="cfi_flash_0.flash" --boot="D:/altera/70/ip/nios
2_ip/altera_nios2/boot_loader_cfi.srec"

# Programming flash with the project
"$SOPC_KIT_NIOS2/bin/nios2-flash-programmer" --base=0x00000000 --sidp=0x00411018
--id=3354069396 --timestamp=1219047976 --instance=0 "cfi_flash_0.flash"
Using cable "USB-Blaster [USB-0]", device 1, instance 0x00
Resetting and pausing target processor: OK
Reading System ID at address 0x00411018: verified

: Checksumming existing contents

00000000 : Verifying existing contents

Checksummed/read 1kB in 0.0s
Erase not required

00000000 ( 0%): Programming

Programmed 1KB in 0.0s
No change to device contents
Leaving target processor paused

flash的问题是一个常见问题，楼主可以看看相关的帖子，论坛上有。

flash的讨论 http://bbs.eccn.com/ecbbs/dispbbs.asp?boardID=9&ID=36154&page=2

从楼主的信息中我觉得有可能是楼主的targetboard设置或者是flash验证没有通过，即硬件问题。