"Kernel not found " on RB433ah

im trying to fix my bord via RS232, i’ve got that situacion:
(that post i found on net. i’ve got same things)

RouterBOOT-2.6
What do you want to configure?
d - boot delay
k - boot key
s - serial console
o - boot device
u - cpu mode
r - reset configuration
e - format nand
g - upgrade firmware
i - board info
p - boot protocol
t - do memory testing
x - exit setup
your choice:

RouterBOOT booter 2.6

RouterBoard 112

CPU frequency: 175 MHz
Memory size: 16 MB

Press any key within 2 seconds to enter setup..
kernel not found
trying bootp
protocol…


… failed
kernel loading failed


RouterBOOT booter 2.6

RouterBoard 112

CPU frequency: 175 MHz
Memory size: 16 MB

Press any key within 2 seconds to enter setup..
kernel not found
trying bootp
protocol…


… failed
kernel loading failed




Press any key within 2 seconds to enter setup

RouterBOOT-2.6
What do you want to configure?
d - boot delay
k - boot key
s - serial console
o - boot device
u - cpu mode
r - reset configuration
e - format nand
g - upgrade firmware
i - board info
p - boot protocol
t - do memory testing
x - exit setup
your choice: g - upgrade firmware

Upgrade firmware options:
e - upgrade firmware over ethernet
s - upgrade firmware over serial port
your choice: s - upgrade firmware over serial port


xmodem receiver ready, waiting for data…
press +X several times to cancel transfer
press any key to continue…
file transfer ok
writing new firmware… OK
please reboot to run new booter

Upgrade firmware options:
e - upgrade firmware over ethernet
s - upgrade firmware over serial port
your choice:

RouterBOOT booter 2.14

RouterBoard 112

CPU frequency: 175 MHz
Memory size: 16 MB

Press any key within 2 seconds to enter setup..
kernel not found
trying bootp
protocol…


… failed
kernel loading failed


RouterBOOT booter 2.14

RouterBoard 112

CPU frequency: 175 MHz
Memory size: 16 MB

Press any key within 2 seconds to enter setup

RouterBOOT-2.14
What do you want to configure?
d - boot delay
k - boot key
s - serial console
o - boot device
u - cpu mode
r - reset booter configuration
e - format nand
g - upgrade firmware
i - board info
p - boot protocol
t - do memory testing
x - exit setup
your choice: i - board info

Board Info:

Board type: 112
Serial number: 0F4D01D6DFB5
Firmware version: 2.14
CPU frequency: 175 MHz
Memory size: 16 MB
eth1 MAC address: 00:0C:42:0B:87:02

press any key to continue…

RouterBOOT-2.14
What do you want to configure?
d - boot delay
k - boot key
s - serial console
o - boot device
u - cpu mode
r - reset booter configuration
e - format nand
g - upgrade firmware
i - board info
p - boot protocol
t - do memory testing
x - exit setup
your choice: o - boot device

Select boot device:
e - boot over Ethernet

  • n - boot from NAND, if fail then Ethernet
    1 - boot Ethernet once, then NAND
    o - boot from NAND only
    b - boot chosen device
    your choice: n - boot from NAND, if fail then Ethernet

RouterBOOT-2.14
What do you want to configure?
d - boot delay
k - boot key
s - serial console
o - boot device
u - cpu mode
r - reset booter configuration
e - format nand
g - upgrade firmware
i - board info
p - boot protocol
t - do memory testing
x - exit setup
your choice:


Does anyone know about that?
Thanks