WRT54G V8 刷固件变砖 5354 CPU （已解决）

rrw***

DD-WRT mini版 及各版本 TFTP刷机均不能走完

TTL 信息

CFE version 1.0.37 for BCM947XX (32bit,SP,LE)
Build Date: Mon Mar 12 15:25:22 CST 2007 (root@localhost.localdomain)
Copyright (C) 2000,2001,2002,2003 Broadcom Corporation.
Initializing Arena
Initializing Devices.
Boot partition size = 131072(0x20000)
et0: Broadcom BCM47xx 10/100 Mbps Ethernet Controller 4.130.23.0
CPU type 0x29029: 240MHz
Total memory: 32768 KBytes
Total memory used by CFE:  0x80400000 - 0x8049A8A0 (632992)
Initialized Data:          0x80430830 - 0x80432E20 (9712)
BSS Area:                  0x80432E20 - 0x804348A0 (6784)
Local Heap:                0x804348A0 - 0x804988A0 (409600)
Stack Area:                0x804988A0 - 0x8049A8A0 (8192)
Text (code) segment:       0x80400000 - 0x80430830 (198704)
Boot area (physical):      0x0049B000 - 0x004DB000
Relocation Factor:         I:00000000 - D:00000000
Device eth0:  hwaddr 00-23-69-8A-04-55, ipaddr 192.168.1.1, mask 255.255.255.0
        gateway not set, nameserver not set
Null Rescue Flag.
Boot program checksum is invalid
Hello!! Enter Rescue Mode: (Check error)
Reading :: TFTP Server.
Failed.: Timeout occured


连接JTAG

C:\jtag>tjtag -erase:nvram
==============================================
EJTAG Debrick Utility v3.0 RC1 Tornado-MOD
==============================================
Probing bus ... Done
Instruction Length set to 8
CPU Chip ID: 00100101001101010100000101111111 (253541
*** Found a Broadcom BCM5354 KFBG Rev 2 CPU chip ***
    - EJTAG IMPCODE ....... : 00000000100000010000100
    - EJTAG Version ....... : 1 or 2.0
    - EJTAG DMA Support ... : Yes
    - EJTAG Implementation flags: R4k MIPS16 MIPS32
Issuing Processor / Peripheral Reset ...  ECR: 0x0020
Enabling Memory Writes ... Mem 0x00000000
Done
Halting Processor ...
00000000001000001000000100000000 (00208100)
00000000001000000000000100000000 (00200100)
<rocessor Entered Debug Mode!> ... Done
Clearing Watchdog ... Done
Probing Flash at (Flash Window: 0x1fc00000) ...
Done
*** Unknown or NO Flash Chip Detected ***
*** REQUESTED OPERATION IS COMPLETE ***

C:\jtag>

不认Flash              FLASH型号 三星K8D6316UBM  8M


换了很多版本都不行
最后换 TJTAG V3.0.1 版本
加强制命令
jtag -flash:cfe /fc:56
刷写成功

再用tftp刷tomato_dual_1.23.0483成功救活

hana***

是不是刷错了固件

wiza***

我可以帮你修，QQ：68364143

mmc***

要刷带ND的TT,DD固件，不然变砖。还有就是你JTAG没有认到Flash，换版本试试。可以不清固件直接TFTP上传固件，不过要掌握好时机，路由器通电自检完马上点“更新固件”（v8. 54g2. 我试过好用，反而v2失败）。5354cpu是比较麻烦的，前阵子才搞好2台放了快一年的54g v8，v8无线比54g2强许多。