Gigabyte H55M! Please help

[Josephxx]

Hey everyone! I'm new here and would like to have something special in my BIOS edited. I'd like to overclock only the CPU ratio without changing the BCLK, so that the ram won't be overclocked.
My motherboard is GIGABYTE H55M-D2H rev 1.3
BIOS AWARD Software Internation F4 (06/02/2012)
SMBIOS 2.4
I really wish someone is going to help me with this. I really need to flash it and mod it...
Thanks everyone! Appreciated your efforts.

[Josephxx]

Could someone try to help me please?