Hi, I'd just like to query something. Out of all the BIOS's I've flashed over the years I've never come across one where the BIOS ROM is a difference size to the capacity of the chip it's going to be burned onto... I have this Lenovo E520 and the BIOS chip is 4MB in size... yet the BIOS ROM file is just 2.5MB. Should be I be concerned or can this be normal? Thanks, James.