Post EDIT:
LO HE FUNDIDO Así que creo que me retiro del proyecto si no cae en mis manos algun otro Livebox
Despues de poder cortocircuitar la flash y acceder al modo UART sin problema...
Volviendo a poner los puentes para acceder al modo UART... Dejó de arrancar, encender leds, decir nada por serial... ¡Adios!
Dejo el último fallo que me daba por si acaso...
ROM VER: 1®
ROM VER: 1.0.5
CFG 01
Tuning DDR begin
DDR Access auto data-eye tuning Rev 0.3a
DDR size from 0xa0000000 - 0xa7ffffff
DDR check ok... start booting...
=======================================================================
Wireless ADSL IAD VR9 Loader v0.70.01 build Mar 26 2012 13:36:53
Arcadyan Technology Corporation
=======================================================================
A1x VR9
0xbe22ff1c : 70240000
0xBf203014 : 70240000
MXIC MX29GL256EL top boot 16-bit mode found
Copying boot params.....DONE
Enter command mode ...
Get Primary to 1.....
Image Check from FLASH_AREA_IMAGE_1 : Failed.
Image Check from FLASH_AREA_IMAGE_0 : Failed.
Flash Checking Again - fw/ui... Failed.
Unzipping Tiny Kernel at 0x80002000 ... failed : 4 !!
[VR9 Boot]:!
Enter Administrator Mode !
[VR9 Boot]:
[VR9 Boot]:u
UPLOAD Flash
---------------------------------------
Area Address Length
---------------------------------------
[0] Boot 0xB0000000 512K
[1] Image 0 0xB1280000 6144K
[2] Image 1 0xB1880000 6144K
[3] Configuration 0xB1E80000 1024K
[4] Boot Parameters 0xB1F80000 256K
[5] Flash Image 0xB0000000 32768K
[6] Linux Image 0xB0080000 24576K
[7] Emergency Value 0xB1FC0000 2883584K
---------------------------------------
Enter area to UPLOAD:
ERROR: Not a valid area.
[VR9 Boot]:u
UPLOAD Flash
---------------------------------------
Area Address Length
---------------------------------------
[0] Boot 0xB0000000 512K
[1] Image 0 0xB1280000 6144K
[2] Image 1 0xB1880000 6144K
[3] Configuration 0xB1E80000 1024K
[4] Boot Parameters 0xB1F80000 256K
[5] Flash Image 0xB0000000 32768K
[6] Linux Image 0xB0080000 24576K
[7] Emergency Value 0xB1FC0000 2883584K
---------------------------------------
Enter area to UPLOAD:
ERROR: Not a valid area.
[VR9 Boot]:0
Set Primary to 0.....PASS
[VR9 Boot]:
[VR9 Boot]:!
Enter Administrator Mode !
[VR9 Boot]:
[VR9 Boot]:u
UPLOAD Flash
---------------------------------------
Area Address Length
---------------------------------------
[0] Boot 0xB0000000 512K
[1] Image 0 0xB1280000 6144K
[2] Image 1 0xB1880000 6144K
[3] Configuration 0xB1E80000 1024K
[4] Boot Parameters 0xB1F80000 256K
[5] Flash Image 0xB0000000 32768K
[6] Linux Image 0xB0080000 24576K
[7] Emergency Value 0xB1FC0000 2883584K
---------------------------------------
Enter area to UPLOAD:
ERROR: Not a valid area.
Vamos, que mi uboot si está protegido... -.- ¿WTF??
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Dado que tanto Noltari como yo hemos experimentado el mismo tipo de brickeo definitivo del Router con el método de puentear R149 y R155 para acceder al modo UART,
recomendaría el metodo de
CORTO DE MEMORIA FLASH. Aunque como podéis ver a mi no me permitió sobrescribir el u-boot.