el problema es q emos tocado algo de la ROM, vease quitar app's etc. y meterle parches a la rom,
la solucion es de XDA,
1. reinstalar la ROM original metiendo el .zip de la pagina de asus en una microsd en la carpeta raiz. y al introducirla en la tablet detectara que hay una actualizacion
1.5 (PUEDE SER QUE FUNCIONE SIN ESTO) hacer un WIPE
2. descargar estos dos archivos: //En 3 enlaces
http://www25.zippyshare.com/v/91334594/file.html
http://www1.zippyshare.com/v/96461494/file.html
http://www.mediafire.com/?yq1bt16mnm7tc8d
3. descomprimir 1 vez cada 1 nos saldran 2 archivos sin extension y utilizando el Root explorer o el que useis los copiais a:
copiarlo primero dentro de la tablet con el cable, y despues con el root explorer copiarlo a la ubicacion que pongo abajo.
dlpkgfile -> /cache
command -> /cache/recovery
4. Instalar el Voodoo OTA RootKeeper, y realizar una copia del root y presionar temp. un-root.
5. apagar el tablet
6. Iniciar el recovery, POWER + VOL -
7. En el primer menu apretar VOL+ para entrar en la intalacion.
8. Esperar que os vaya igual de bien que a mi ;P
Archivos testeados para WW
Fuente:
http://forum.xda-developers.com/show....php?t=1853145
Right, so, through a bit of trial and error using guidance from the forums, this is how I updated to JB and kept root for WW after the update originally failed.
download BOTH files from here (massive thanks to ch3mn3y):
http://www25.zippyshare.com/v/91334594/file.html
http://www1.zippyshare.com/v/96461494/file.html
then extract the .zip file.
download the command file from here (massive thanks to krabappel2548):
http://www.mediafire.com/?yq1bt16mnm7tc8d
extract it.
place the dlpkgfile and command file, both unzipped onto your tab. Use a root explorer to paste the command file into /cache/recovery and the dlpkgfile (the actual file, not the folder) to /cache.
go to Voodoo OTA Rootkeeper and temp unroot.
turn off the tab.
boot into recovery with Vol - and power, then when it says to press volume up to boot into RCK, do it.
You'll see the android with the blue wires and it will go through the install process if you have done it right. let it do its thing.
obviously, when it has settled, restore root with Voodoo.
If you get the android with red exclamation mark, i reccomend downloading the ICS zip of your current firmware and SKU and sticking it on a micro SD card, and letting it restore any programmes you've deleted.