Did you try to flash with the unmodified 305 version of the BIOS and see if that works ? I just looked at the ASUS site for that NoteBook and the 305 BIOS is supposed to fix that exact issue. So if you flash with the unmodded 305, you might have some luck with this issue as well. Also AFLASH2 is the tool that is recommended by ASUS for flashing your BIOS (from DOS, Not Windows). Do NOT Flash from Windows !!!!
Yes, the unmodified 305 from asus website work... I also tried to make a 305 version with AMITool and lenovo slic 2.1, but the result is the same...