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运行WRT54G命令: (试过各种参数)
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WRT54G/GS EJTAG Debrick Utility v4.5
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Probing bus ... Done
Instruction Length set to 5
CPU Chip ID: 11111111111111111111111111111111 (FFFFFFFF)
*** Unknown or NO CPU Chip ID Detected ***
*** Possible Causes:
1) WRT54G/GS is not Connected.
2) WRT54G/GS is not Powered On.
3) Improper JTAG Cable.
4) Unrecognized CPU Chip ID.
有一点奇怪的是, 如果使用参数: /skipdetect, /nocwd 开始时不检测CPU, 跳过看狗,
则板子会不断重启. 说明JTAG线还是有些作用的.
wrt54g -backup:cfe /nocwd /skipdetect
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WRT54G/GS EJTAG Debrick Utility v4.5
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Probing bus ... Done
Instruction Length set to 5
CPU Chip ID: 11111111111111111111111111111111 (FFFFFFFF)
*** CHIP DETECTION OVERRIDDEN ***
- EJTAG IMPCODE ....... : 11111111111111111111111111111111 (FFFFFFFF)
- EJTAG Version ....... : Unknown (7 is a reserved value)
- EJTAG DMA Support ... : No
Issuing Processor / Peripheral Reset ... Done
Enabling Memory Writes ... Skipped
Halting Processor ... <Processor Entered Debug Mode!> ... Done
Clearing Watchdog ... Skipped
Probing Flash at (Flash Window: 0x1fc00000) ... ^C |
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