关于用jtag 清 nvram和cfe的问题

wk***

前因

用DDwrt  正常 升级成蕃茄后 发现没有密码 进不去，升级后能分配地址也能ping 通
就是没有办法进入没有密码，

经过：
用jtag清nvram ，用错了JTAG 版本 ，先是输入-erase:nvram 后边没有后缀名/fc:因为这个版本
WRT54G/GS EJTAG Debrick Utility v4.8-DELL2300-V2-MOD的内存型号了没有Toshiba TC58FVM6T2ATG65
，就直接输入-erase:nvram 提示结果是：

WRT54G/GS EJTAG Debrick Utility v4.8-DELL2300-V2-MOD
=================================================

Probing bus ... Done

Instruction Length set to 8

CPU Chip ID: 00000100011100000100000101111111 (0470417F)
*** Found a Broadcom BCM4704 Rev 8 CPU chip ***

    - EJTAG IMPCODE ....... : 00000000100000000000100100000100 (00800904)
    - EJTAG Version ....... : 1 or 2.0
    - EJTAG DMA Support ... : Yes

Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Done
Halting Processor ... <Processor Entered Debug Mode!> ... Done
Clearing Watchdog ... Done

Probing Flash at (Flash Window: 0x1fc00000) ... Done

*** Unknown or NO Flash Chip Detected ***

*** REQUESTED OPERATION IS COMPLETE ***
然后 又输入-backup:nvram  提示结果是：
=================================================
WRT54G/GS EJTAG Debrick Utility v4.8-DELL2300-V2-MOD
=================================================

Probing bus ... Done

Instruction Length set to 8

CPU Chip ID: 00000100011100000100000101111111 (0470417F)
*** Found a Broadcom BCM4704 Rev 8 CPU chip ***

    - EJTAG IMPCODE ....... : 00000000100000000000100100000100 (00800904)
    - EJTAG Version ....... : 1 or 2.0
    - EJTAG DMA Support ... : Yes

Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Done
Halting Processor ... <Processor Entered Debug Mode!> ... Done
Clearing Watchdog ... Done

Probing Flash at (Flash Window: 0x1fc00000) ... Done

*** Unknown or NO Flash Chip Detected ***

*** REQUESTED OPERATION IS COMPLETE ***

[ 99% Backed Up]   1ffffe90: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1ffffea0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1ffffeb0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1ffffec0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1ffffed0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1ffffee0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1ffffef0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff00: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff10: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff20: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff30: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff40: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff50: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff60: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff70: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff80: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffff90: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffffa0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffffb0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffffc0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffffd0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1fffffe0: ffffffff ffffffff ffffffff ffffffff
[ 99% Backed Up]   1ffffff0: ffffffff ffffffff ffffffff ffffffff
Done  (NVRAM.BIN.SAVED_20021017_132314 saved to Disk OK)

bytes written: 131072
=========================
Backup Routine Complete
=========================
elapsed time: 33 seconds


*** REQUESTED OPERATION IS COMPLETE ***
依旧PING 不通 并且不能自动分配。后来找到了一个能识别的版本Broadcom EJTAG Debrick Utility v1.7j-hugebird
添加了FC:41  各输入清和保存 命令
2 -erase:nvram  /fc:41
2 -backup:nvram /fc:41
之后还是不行 ，把以前备份的NVRAM.BIN 放入了根目录后 又输入-flash:nvram /fc:41
提示
===============================================
Broadcom EJTAG Debrick Utility v1.7j-hugebird
===============================================

Probing bus ... Done

Instruction Length set to 8

CPU running under LITTLE endian

CPU Chip ID: 00000100011100000100000101111111 (0470417F)
*** Found a Broadcom BCM4704 Rev 8 CPU chip ***

    - EJTAG IMPCODE ....... : 00000000100000000000100100000100 (00800904)
    - EJTAG Version ....... : 1 or 2.0
    - EJTAG DMA Support ... : Yes
    - EJTAG Implementation flags: R4k MIPS32

Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Done
Halting Processor ... <Processor Entered Debug Mode!> ... Done
Clearing Watchdog ... Done
Loading CPU Configuration Code ... Skipped

Manual Flash Selection ... *** Manually Selected a TC58FVM6T2A  4Mx16 TopB    (8
MB) Flash Chip ***

    - Flash Chip Window Start .... : 1c000000
    - Flash Chip Window Length ... : 00800000
    - Selected Area Start ........ : 1c7f0000
    - Selected Area Length ....... : 00010000

*** You Selected to Flash the NVRAM.BIN ***

=========================
Flashing Routine Started
=========================
Total Blocks to Erase: 8

Erasing block: 128 (addr = 1c7f0000)...Done
Erasing block: 129 (addr = 1c7f2000)...Done
Erasing block: 130 (addr = 1c7f4000)...Done
Erasing block: 131 (addr = 1c7f6000)...Done
Erasing block: 132 (addr = 1c7f8000)...Done
Erasing block: 133 (addr = 1c7fa000)...Done
Erasing block: 134 (addr = 1c7fc000)...Done
Erasing block: 135 (addr = 1c7fe000)...Done

Loading NVRAM.BIN to Flash Memory...
Done  (NVRAM.BIN loaded into Flash Memory OK)

=========================
Flashing Routine Complete
=========================
elapsed time: 86 seconds


*** REQUESTED OPERATION IS COMPLETE ***

看似成功，依旧是砖
问题
1dd 刷成蕃茄后 ，cfe和nvram 是不是都变了。新的蕃茄系统是不是重新生成了一个CFE 引道文件啊
2想请教 在没有清kernel 的情况下，清理CFE和nvram 后 AP能不能自动生成一个CFE 和nvram 啊
3 是不是更换蕃茄系统后原来的dd 备份的cfe就不能用了啊  

wk***

等待指点

mai***

1. 没的事！CFE好比BIOS，DD和番茄好比windowsXP，你看过Ghost XP后连BIOS都给升级了的事吗？
2. 绝对不可能自动生成CFE！如果NVRAM空白，随便番茄或者DD都会自动生成缺省的NVRAM。
3. 可以用啊！强调多次了，只要CFE还能启动，就不要犯贱去刷它。这就好像你厌倦了XP，要装乌邦图尝鲜，那是不用刷BIOS的。

wk***

谢谢楼上的 ，
可是没有清cfe 怎么也启动不了和不能自动分配地址呢
现在把kener cfe nvram 都清了 重新写入cfe 试试 看看是什么情况
3年都没有碰这些玩意了，





另 ：不是犯贱，是发现那个日籍的蕃茄版主发的一个稳定版的带usb 的版本 想升级试试 挂载摄像头
用dd一直没有成功挂载过 声卡 打印机都可以成功 所以就改成蕃茄了 没有想到会是这样

hi***

日籍的蕃茄版主？是谁了？