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toh:belkin:f7d4401 [2017/11/05 11:01]
rexar [Kernel Panic / Soft Brick] Clarified steps
toh:belkin:f7d4401 [2017/11/05 11:07] (current)
rexar [General]
Line 100: Line 100:
   * When CFE boots it gives three attempts to boot from TFTP before hitting CFE shell, this is where the previous procedure uploads the stock firmware.   * When CFE boots it gives three attempts to boot from TFTP before hitting CFE shell, this is where the previous procedure uploads the stock firmware.
   * This router contains a CFE mini web server at 192.168.2.1 activated in the event of boot failure. I could not get it to flash any firmware however (serial logs indicated it tried to read the input file 5 times then stopped, no obvious signs of file rejection)   * This router contains a CFE mini web server at 192.168.2.1 activated in the event of boot failure. I could not get it to flash any firmware however (serial logs indicated it tried to read the input file 5 times then stopped, no obvious signs of file rejection)
 +  * If using a *nix machine to recover from a bad flash, '​atftp'​ is known to work while the plain '​tftp'​ seems to transmit wrongly sized firmware images as indicated by its own logs.
   * Using '​Load'​ and '​Boot'​ commands via CFE with the -tftp option froze the unit (stuck at '​loading'​ on prompt), had to pull power in order to get the shell back. Used tftpd-hpa on Debian 8.   * Using '​Load'​ and '​Boot'​ commands via CFE with the -tftp option froze the unit (stuck at '​loading'​ on prompt), had to pull power in order to get the shell back. Used tftpd-hpa on Debian 8.
  
toh/belkin/f7d4401.txt · Last modified: 2017/11/05 11:07 by rexar