I was burning my carambola's flash via LuCi.
Process started and continued for 3-4 mins , and suddenly a page appeared saying "Cant connect".
Now carambola wont even boot
all it says is :-

U-Boot 1.1.4 (Feb 8 2013 - 11:41:32)

AP121-2MB (ar9330) U-boot
DRAM:
sri
ar7240_ddr_initial_config(145): python ddr init
#### TAP VALUE 1 = f, 2 = 10
64 MB
Top of RAM usable for U-Boot at: 84000000
Reserving 212k for U-Boot at: 83fc8000
Reserving 192k for malloc() at: 83f98000
Reserving 44 Bytes for Board Info at: 83f97fd4
Reserving 36 Bytes for Global Data at: 83f97fb0
Reserving 128k for boot params() at: 83f77fb0
Stack Pointer at: 83f77f98
Now running in RAM - U-Boot at: 83fc8000
Flash Manuf Id 0xef, DeviceId0 0x40, DeviceId1 0x18
flash size 16777216, sector count = 256
Flash: 16 MB
In: serial
Out: serial
Err: serial
Net: ag7240_enet_initialize...
No valid address in Flash. Using fixed address
No valid address in Flash. Using fixed address
: cfg1 0x5 cfg2 0x7114
eth0: 00:03:7f:09:0b:ad
eth0 up
: cfg1 0xf cfg2 0x7214
eth1: 00:03:7f:09:0b:ad
athrs26_reg_init_lan
ATHRS26: resetting s26
ATHRS26: s26 reset done
eth1 up
eth0, eth1
Hit any key to stop autoboot: 0
## Booting image at 9f050000 ...
Image Name: MIPS OpenWrt Linux-3.3.8
Created: 2013-07-01 5:47:57 UTC
Image Type: MIPS Linux Kernel Image (lzma compressed)
Data Size: 855707 Bytes = 835.7 kB
Load Address: 80000000
Entry Point: 80000000
Verifying Checksum at 0x9f050040 ...OK
Uncompressing Kernel Image ... OK
No initrd
## Transferring control to Linux (at address 80000000) ...
## Giving linux memsize in bytes, 67108864

Starting kernel ...

And it gets stuck there.
.

Hi,

look at this:
https://github.com/8devices/carambola2/issues/1

Thanx for pointing me there.
But I am unable to skip out of autoboot.
I guess for using tftp I have to get out of autoboot , Is that right??

Remover the lock that was interrupting my serial comm
But cant upgrade it from tftp either.

AP121-2MB (ar9330) U-boot
DRAM:
sri
ar7240_ddr_initial_config(145): python ddr init
fff#### TAP VALUE 1 = f, 2 = 10
64 MB
Top of RAM usable for U-Boot at: 84000000
Reserving 212k for U-Boot at: 83fc8000
Reserving 192k for malloc() at: 83f98000
Reserving 44 Bytes for Board Info at: 83f97fd4
Reserving 36 Bytes for Global Data at: 83f97fb0
Reserving 128k for boot params() at: 83f77fb0
Stack Pointer at: 83f77f98
Now running in RAM - U-Boot at: 83fc8000
Flash Manuf Id 0xef, DeviceId0 0x40, DeviceId1 0x18
flash size 16777216, sector count = 256
Flash: 16 MB
fIn: serial
Out: serial
Err: serial
Net: ag7240_enet_initialize...
No valid address in Flash. Using fixed address
No valid address in Flash. Using fixed address
: cfg1 0x5 cfg2 0x7114
eth0: 00:03:7f:09:0b:ad
eth0 up
: cfg1 0xf cfg2 0x7214
eth1: 00:03:7f:09:0b:ad
athrs26_reg_init_lan
ATHRS26: resetting s26
ATHRS26: s26 reset done
eth1 up
eth0, eth1
Hit any key to stop autoboot: 0
ar7240> tftp 80060000 bin
eth0 link down
FAIL
dup 1 speed 1000
Using eth1 device
TFTP from server 192.168.13.11; our IP address is 192.168.13.10
Filename 'bin'.
Load address: 0x80060000
Loading: T T T T T T T T T T
Retry count exceeded; starting again
eth0 link down
FAIL
Using eth1 device
TFTP from server 192.168.13.11; our IP address is 192.168.13.10
Filename 'bin'.
Load address: 0x80060000
Loading: T T T T T T T T T T
Retry count exceeded; starting again
eth0 link down
FAIL
Using eth1 device
TFTP from server 192.168.13.11; our IP address is 192.168.13.10
Filename 'bin'.
Load address: 0x80060000
Loading: T T T T T T T T T T
Retry count exceeded; starting again
eth0 link down
FAIL
Using eth1 device
TFTP from server 192.168.13.11; our IP address is 192.168.13.10
Filename 'bin'.
Load address: 0x80060000
Loading: T T T T T T T T T T
Retry count exceeded; starting again
eth0 link down
FAIL