Thank you very much for the reply. Do you think this only a flash problem and not the problem with the moded bios? I am usually not very comfortable with the afudos. I have already destroyed one mainboard where the flashing hanged while using afudos utility with following command: afudos /i"biosname" /pbnc /n
It is a common problem with a modded bios on some Asus boards. Its gives less risc then flashing with asus update.