The BIOS chips are different among the H8DTT-HIBQF motherboards in several systems. Some of them are marked X8DTT 7209 and the rest are marked X8DTT 9C10. Does this mean they have different BIOS chips?
All of the H8DTT-HIBQF motherboards come with the same BIOS chips with different BIOS inside. The last 4 digits stands for the BIOS build date. You can use the regular procedures to update the BIOS.