Hello,
I've got a problem with RouterBOARD 493G.
I just wanted to upgrade packages from version 5.14 to 6.15 and after reboot i have found this issue via serial port:

---------------------------------------------------------------------------------------------------------

RouterBOOT booter 3.18

RouterBoard 493G

CPU frequency: 680 MHz
Memory size: 256 MiB
NAND size: 128 MiB

Boot configuration reset, applying defaults
writing settings to flash... OK

Press any key within 2 seconds to enter setup..
writing settings to flash... OK
trying bootp protocol............... failed
kernel loading failed

loading kernel from nand... OK
setting up elf image... OK
jumping to kernel code
Starting...
failed to open /dev/flash: No such file or directory
Resetting system configuration...
Generating SSH DSA key...
Starting services...

Demo license expired!
Please reinstall the router.

connect failed (errno=2)
connect failed (errno=2)
connect failed (errno=2)
connect failed (errno=2)
---------------------------------------------------------------------------------------------------------



After reboot i did "reset booter configuration" and from this point the Routerboard's green LED diods (LD41-44) are lighting and device seems to be dead.

I've got here 3 more devices with similar issues.
Do you have any idea whats wrong and how to fix it?
Thanks.




---------------------------------------------------------------------------------------------------------

RouterBOOT booter 3.18

RouterBoard 493G

CPU frequency: 680 MHz
Memory size: 256 MiB
NAND size: 128 MiB

Boot configuration CRC error, applying defaults
writing settings to flash... OK

Press any key within 2 seconds to enter setup

RouterBOOT-3.18
What do you want to configure?
d - boot delay
k - boot key
s - serial console
n - silent boot
o - boot device
f - cpu frequency
r - reset booter configuration
e - format nand
w - repartition nand
g - upgrade firmware
i - board info
p - boot protocol
b - booter options
t - do memory testing
x - exit setup
your choice: r - reset booter configuration


writing settings to flash..writing settings to flash... OK


----------------------------------------------------------
RouterBOOT booter 3.18

RouterBoard 493G

CPU frequency: 680 MHz
Memory size: 256 MiB
NAND size: 128 MiB

Boot configuration reset, applying defaults
writing settings to flash... OK

Press any key within 2 seconds to enter setup..
writing settings to flash... OK
trying bootp protocol............... failed
kernel loading failed

loading kernel from nand... OK
setting up elf image... OK
jumping to kernel code
Starting...
Oops[#1]:
Cpu 0
$ 0 : 00000000 00000000 d00bc000 cfc04d40
$ 4 : d00bc800 00000000 00000000 80006000
$ 8 : 00000000 c0236950 c12025b4 c11e9b54
$12 : c12025bc c12025c0 00000000 00000000
$16 : cf510000 cf510000 cf510000 cf510000
$20 : cf510000 cf510000 00000000 cf510000
$24 : 00000002 c011332c
$28 : cf4b2000 cf4b3e00 cf510000 cf508e70
Hi : 0000c138
Lo : 00000022
epc : cf508e70 init_module+0x514/0x994 [flash@0xcf508000]
Not tainted
ra : cf508e70 init_module+0x514/0x994 [flash@0xcf508000]
Status: 1000c603 KERNEL EXL IE
Cause : 00800008
BadVA : 00000000
PrId : 00019374 (MIPS 24Kc)
Process insmod (pid: 30, threadinfo=cf4b2000, task=cfcd19e0, tls=77bc4460)
Stack : 00000124 d1200000 1fc00000 cf510000 31120006 cf50d4e8 00000000 cf510000
cf50d4a0 cf50895c 00000000 c0400000 c0400000 00000018 00000028 c015586c
00000124 c0101624 c0158074 cfc04e00 0000000a 00000000 cf50d4e8 c01972e0
cf50d4a0 c01421d0 00000000 cf50d4a0 cff7ce00 c03c0000 c03c0000 c03c0000
00000018 c01578c8 cf845b38 77bb2000 00000000 00000000 cf50d4ac 00000000
...
Call Trace:
[<cf508e70>] init_module+0x514/0x994 [flash@0xcf508000]
[<c0101624>] do_one_initcall+0xf4/0x1c0


Code: 24060800 0c08da18 ae82d614 <8ec50000> 3c026472 24426148 14a20007 3c15 cf51 3c17cf51
---[ end trace 9705938b71055c24 ]---
failed to open /dev/flash: No such file or directory
NET: Registered protocol family 1
NET: Registered protocol family 17
logring: default buf size:4096, console_loglevel:15
console [logring0] enabled

Could you try to put in microSD cad in slot. an see how it goes.

Could you try to put in microSD cad in slot. an see how it goes.

Why would installing a MicroSD card on the board make a difference? This seems like a very non-intuitive suggestion.

-- Nathan

The same for 10 rb493g... but with one microsd installed it works. WHAT is HAPPENING??¿!?!!?!? if not installed...

loading kernel from nand... OK
setting up elf image... OK
jumping to kernel code
Starting...
Oops[#1]:
Cpu 0
$ 0 : 00000000 00000000 d00be000 cfc04d60
$ 4 : d00be800 00000000 00000000 80006000
$ 8 : 00000000 c01b6d10 c12025b4 c11e8a14
$12 : c12025bc c12025c0 00000000 00000000
$16 : cf460000 00000000 cf460000 cf460000
$20 : cf460000 cf460000 00000020 cf460000
$24 : 00000002 c009365c
$28 : cf44a000 cf44be00 cf460000 cf461f04
Hi : 0000bf80
Lo : 0000001d
epc : cf461f04 init_module+0x65c/0xb4c [flash@0xcf460000]
Not tainted
ra : cf461f04 init_module+0x65c/0xb4c [flash@0xcf460000]
Status: 1000c603 KERNEL EXL IE
Cause : 00000008
BadVA : 00000000
PrId : 00019374 (MIPS 24Kc)
Process insmod (pid: 30, threadinfo=cf44a000, task=cfc6d9e0, tls=77efa460)
Stack : 00000124 d1180000 1fc00000 80000000 00000000 cf465af8 cf460000 c11e8a00
cf465ab0 cf4618a8 00000000 c0380000 c0380000 00000018 00000028 c00d5bdc
00000124 c0081624 c00d83e4 cfc04e60 0000000a 00000000 cf465af8 c01176b0
cf465ab0 c00c2540 00000000 cf465ab0 cfcdbc00 c0340000 c0340000 c0340000
00000018 c00d7c38 cf83b2f8 77ee8000 00000000 00000000 cf465abc 00000000
...
Call Trace:
[<cf461f04>] init_module+0x65c/0xb4c [flash@0xcf460000]
[<c0081624>] do_one_initcall+0xf4/0x1c0
[<c00d7c38>] sys_init_module+0xe48/0x1880
[<c008ed50>] stack_done+0x20/0x44


Code: 24060800 0c06db08 aea25c24 <8e250000> 3c026472 24426148 14a20006 3c1
---[ end trace 0d1cc6925e04aedb ]---
failed to open /dev/flash: No such file or directory
logring: default buf size:4096, console_loglevel:15
console [logring0] enabled

RouterBOOT booter 3.22

RouterBoard 493G

CPU frequency: 680 MHz
Memory size: 256 MiB
NAND size: 128 MiB

Press any key within 2 seconds to enter setup..
writing settings to flash... OK

loading kernel from nand... OK
setting up elf image... OK
jumping to kernel code
Starting...
failed to open /dev/flash: No such file or directory
Starting services...

Demo license expired!
Please reinstall the router.