求助：R6300V2 TTL之后在tfptd卡住了

yida***

闲鱼买了个二手的R6300V2，刷了384之后MESH组网正常使用1个月后变砖
一直是黄灯闪，然后反复重启


用TTL查看是这样的

1. 
   
2. Decompressing...done
   
3. Detect CPU turbo button...
   
4. 
   
5. CFE version 6.37.14.126 (r561982) based on BBP 1.0.37 for BCM947XX (32bit,SP,)
   
6. Build Date: Tue Jun 30 16:15:42 CST 2020 (qin@ubuntu-wk)
   
7. Copyright (C) 2000-2008 Broadcom Corporation.
   
8. 
   
9. Init Arena
   
10. Init Devs.
    
11. Boot partition size = 262144(0x40000)
    
12. DDR Clock: 533 MHz
    
13. Info: DDR frequency set from clkfreq=800,*533*
    
14. et0: Broadcom BCM47XX 10/100/1000 Mbps Ethernet Controller 6.37.14.126 (r561982)
    
15. CPU type 0x0: 800MHz
    
16. Tot mem: 262144 KBytes
    
17. 
    
18. CFE mem:    0x00F00000 - 0x01796238 (9003576)
    
19. Data:       0x00F4E868 - 0x00F4ED64 (1276)
    
20. BSS:        0x00F4ED70 - 0x00F94238 (283848)
    
21. Heap:       0x00F94238 - 0x01794238 (8388608)
    
22. Stack:      0x01794238 - 0x01796238 (8192)
    
23. Text:       0x00F00000 - 0x00F44FA0 (282528)
    
24. 
    
25. Device eth0:  hwaddr 00-90-4C-0F-F2-B7, ipaddr 192.168.1.1, mask 255.255.255.0
    
26.         gateway not set, nameserver not set
    
27. Null Rescue Flag.
    
28. boot the image...
    
29. Boot program checksum is invalid
    
30. Hello!! Enter Rescue Mode: (Check error)
    
31. 
    
32. 
    
33. 1. Wait 10 secs to enter tftp mode
    
34.    or push RESCUE-BTN to enter cmd mode
    
35. Null Rescue Flag.
    
36. Null Rescue Flag.
    
37. Null Rescue Flag.
    
38. 
    
39. 2. enter tftp mode:
    
40. Reading ::
    
41. TFTP Server.
    
42. ..tftp retry wait 0
    
43. Failed.: Timeout occured
    
44. Reading ::
    
45. TFTP Server.
    
46. ..tftp retry wait 0
    
47. Failed.: Timeout occured
    
48. Reading ::
    
49. TFTP Server.
    
50. ..tftp retry wait 0
    
51. Failed.: Timeout occured
    
52. Reading ::
    
53. TFTP Server.
    
54. ..tftp retry wait 0
    
55. Failed.: Timeout occured
    
56. Reading ::
    
57. TFTP Server.
    
58. ..tftp retry wait 0
    
59. Failed.: Timeout occured
    
60. Reading ::
    
61. TFTP Server.
    
62. ..tftp retry wait 0
    
63. Failed.: Timeout occured
    
64. Reading ::
    
65. TFTP Server.
    
66. ..tftp retry wait 0
    
67. Failed.: Timeout occured
    
68. Reading ::
    
69. TFTP Server.
    
70. ..tftp retry wait 0
    
71. Failed.: Timeout occured
    
72. Reading ::
    
73. TFTP Server.
    
74. ..tftp retry wait 0
    
75. Failed.: Timeout occured
    
76. Reading ::
    
77. TFTP Server.
    
78. ..tftp retry wait 0
    
79. Failed.: Timeout occured
    
80. Reading ::
    
81. TFTP Server.
    
82. ..tftp retry wait 0
    
83. Failed.: Timeout occured
    
84. Reading ::
    
85. TFTP Server.
    
86. ..tftp retry wait 0
    
87. Failed.: Timeout occured
    
88. Reading ::
    
89. TFTP Server.
    
90. ..tftp retry wait 0
    
91. Failed.: Timeout occured
    
92. Reading ::
    
93. TFTP Server.
    
94. ..tftp retry wait 0
    
95. Failed.: Timeout occured
    
96. Reading ::
    
97. TFTP Server.
    
98. ..tftp retry wait 0
    
99. Failed.: Timeout occured
    
100. Reading ::
     
101. TFTP Server.
     
102. ..tftp retry wait 0
     
103. Failed.: Timeout occured
     
104. Reading ::
     
105. TFTP Server.
     
106. ..tftp retry wait 0
     
107. Failed.: Timeout occured
     
108. Reading ::
     
109. TFTP Server.
     
110. ..tftp retry wait 0
     
111. Failed.: Timeout occured
     
112. Reading ::
     
113. TFTP Server.
     
114. ..tftp retry wait 0
     
115. Failed.: Timeout occured
     
116. Reading ::
     
117. TFTP Server.
     
118. ..tftp retry wait 0
     
119. Failed.: Timeout occured
     
120. Reading ::
     
121. TFTP Server.
     
122. ..tftp retry wait 0
     
123. Failed.: Timeout occured
     
124. 
     
125. 
     
126. 3. rebooting..▒Digital core power voltage set to 0.9375V
     
127. Decompressing...done
     
128. Digital core power voltage set to 0.9375V
     
129. 
     
130. SHMOO VER 1.13
     
131. 
     
132. PKID07DC06011801080000000000001A103F01000000
     
133. 
     
134. S30040253
     
135. 00001A60
     
136. 
     
137. 
     
138. RDLYW0 00000004
     
139. 
     
140. RDENW0 00000039
     
141. 
     
142. RDQSW0
     

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然后果断crtl + c进入CFE

敲入tftpd之后，系统显示

1. CFE> tftpd
   
2. Invalid command: "tftpd"
   
3. Available commands: nvram, reboot, flash, batch, go, boot, load, save, ping, arp, ifconfig, show, help
   
4. 
   
5. *** command status = -1
   

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help 查看一下，果然没有tftpd命令

1. CFE> help
   
2. Available commands:
   
3. 
   
4. nvram               NVRAM utility.
   
5. reboot              Reboot.
   
6. flash               Update a flash memory device
   
7. batch               Load a batch file into memory and execute it
   
8. go                  Verify and boot OS image.
   
9. boot                Load an executable file into memory and execute it
   
10. load                Load an executable file into memory without executing it
    
11. save                Save a region of memory to a remote file via TFTP
    
12. ping                Ping a remote IP host.
    
13. arp                 Display or modify the ARP Table
    
14. ifconfig            Configure the Ethernet interface
    
15. show clocks         Show current values of the clocks.
    
16. show devices        Display information about the installed devices.
    
17. help                Obtain help for CFE commands
    
18. 
    
19. For more information about a command, enter 'help command-name'
    
20. *** command status = 0
    

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现在不知道怎么办了，是不是彻底变砖？

Ngh***

Boot program checksum is invalid.
闪存存储的固件校验码对不上了
它提示你tftp是进入救援模式，让你给它刷写固件。

yida***

感谢回复

但是它根本进不了tftp模式，我没办法刷写固件

yida***

我又拆了一台好的R6300V2，和故障的这台一样，都是刷的梅林384.19_0-20200831

用TTL连接后，也是一样没有tftpd命令，

1. CFE> tftpd
   
2. Invalid command: "tftpd"
   
3. Available commands: nvram, reboot, flash, batch, go, boot, load, save, ping, arp                                                                                                                                                             , ifconfig, show, help
   
4. 
   
5. *** command status = -1

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看来是刷384之前刷的新的CFE里就不支持这个命令。。。。

网上找到一个和我一样的情况，但是他那个好在还能进系统，所以在系统里直接刷了之前备份的CFE

这下我好象没有任何办法了

yida***

好了，终于解决了

仔细把刷机教程又看了一遍，发现其中有一段

刷koolshare
一、首先按照前面的教程升级384版本的CFE，刷好后路由器关掉电源。

二、按住 Reset按钮并上电，按住Reset按钮不松开，观察ping的命令行，如果看到有返回并且ttl=100（此时可以放开Reset了，不必一直按着），那么就此时CFE就处在tftp server模式下了，ttl=100的时间很短只有几秒，此时需要立刻通过系统自带的tftp工具将384改版固件刷到路由器，可以提前打好命令，此时按回车。注意这里是用系统自带的tftp工具刷384改版固件！用系统自带的tftp工具刷384改版固件！用系统自带的tftp工具刷384改版固件！（博主注：博主头铁，用的第三方tftp工具也成功了）这个时候由于CFE已经刷好了，实际上R6300v2就已经被认为是RT-AC66U_B1或RT-AC68U了！

原来只要按住RESET键并上电就可以进入tftp server模式！！！

重新刷机解决

Lee***

上面你第一段TTL代码显示的其实已经进入TFTP了，只不过是以网页的形式展现的，用网页也可以直接刷。