[Request] Unlock higher memory frequency on Shuttle XG41

is someone able to unlock higher ram frequency on this motherboard? I am using a Xeon L5430 and 8 GB DDR3, but the bios only allows the memory to be set to 800 or 1066 MHz. Could someone please add a 1333 and 1600 options?
I enclosed my bios file with the added microcode for the Xeon, but if it is better to mod the original, you can download it from Shuttle website here.
Thanks a lot

XG41-mod.rar (517 KB)