No se si ya lo habrán solucionado, espero que si...pero si no, aqui va lo que a mi me solucionó el problema:
stuck screen PROblem Solved -simple work...
step 1
download the correct firmware from Asus website
unzip main file then you will see another zip file unzip that one as well( I have seen in many threads many guys made wrong as saying only one zip) actually two unzip
you will see the blob file inside second
take that out separately
step 2
download adb-fastboot-win.zip. file from
ADB & Fastboot: Install ADB Drivers, Setup ADB & Fastboot
unzip the file
rename that file as fastboot
and copy in c drive
step3
switch off asus tab
by clicking volume down button press power button
you will see three icon
connect to your pc
step4
from the step one you take the blob file and copy that in to fastboot folder
step5
on your computer in the search bar(click start then under the all programme)
type cmd enter
you will see command screen
type cd c:\Fastboot
then type fastboot -i 0x0B05 flash system blob
then wait until system is flashed (wait until the command comes to say finished on pc
then type fastboot -i 0x0B05 reboot
En caso de que no acepte mandarlo como recovery y no como system
Saludos.