the bios is a small chip that start your mb up at post. on the h61 mb if the bios is too low you need another cheaper chip to post the mb with. http://www.asus.com/us/Motherboards/P8H61M_LX_PLUS/#support
look at he cpu qal list you see you need bios 4400 to post a lot of the ib cpu.http://www.gigabyte.us/products/product-page.aspx?pid=4478#
if the vendor send you this motherboard and it has the f3 bios on it your all set.