Originally Posted by pachi72
anyone please have any idea?
You can try this:
Download the stock recovery from here: http://droidbasement.com/db-blog/?p=3210
Copy the image to your fastboot folder.
Download the Asus firmware, unzip the file once and copy it to your internal SD.
Boot tablet into fastboot
Issue this command
fastboot boot recovery.img
Note: Do not flash the recovery, just boot it.
It should recognize the firmware file on your tablet and flash it.
BTW, I doubt the rom has anything to do with your speaker problem, but it would be interesting to find out. Please report back.