Using TFTP to upgrade firmware

Copy build firmware to TFTP directory. You should use *-squashfs-sysupgrade.bin file.

Reboot or power up Carambola with serial console running and connected to PC.

Please choose the operation: 
   1: Load system code to SDRAM via TFTP. 
   2: Load system code then write to Flash via TFTP. 
   3: Boot system code via Flash (default).
   4: Entr boot command line interface.
   9: Load Boot Loader code then write to Flash via TFTP.

Press <2>

2: System Load Linux Kernel then write to Flash via TFTP. 
 Warning!! Erase Linux in Flash then burn new one. Are you sure?(Y/N)
 Please Input new ones /or Ctrl-C to discard
        Input device IP (192.168.0.104) ==:192.168.0.105
        Input server IP (192.168.0.111) ==:192.168.0.104
        Input Linux Kernel filename (2.bin) ==:********squashfs-sysupgrade.bin

You should see some progress on your screen. After it finishes upgrading firmware, press enter. You should see welcome screen.

BusyBox v1.19.3 (2012-01-21 21:06:55 EET) built-in shell (ash)
Enter 'help' for a list of built-in commands.

   ..|'''.|     Powered by 8devices.com        '||              '||                       
 .|'     '   ....   ... ..   ....   .. .. ..    || ...    ...    ||   ....
 ||         '' .||   ||' '' '' .||   || || ||   ||'  || .|  '|.  ||  '' .||
 '|.      . .|' ||   ||     .|' ||   || || ||   ||    | ||   ||  ||  .|' ||
  ''|....'  '|..'|' .||.    '|..'|' .|| || ||.  '|...'   '|..|' .||. '|..'|'