Changing CPU Voltage on OEM Motherboard

I have a OEM biostar a770+ motherboard that I bought from newegg, and I am eager to up the CPU VID so I can further my multiplier overclock on my black edition AMD CPU. All I need is a small increase from 1.32 to 1.35 and Im sure I can get my proc up for my desired framerates. Is there any way for this to be possible? Any way to unlock the setting? Because in the bios, the option is absent, and when I try to up the voltage in AMD Overdrive, it changes the "Target Voltage" but the "Current Voltage" never budges  

According to the website's BIOS manual, seemingly everyone that owns this board, there are these options under the CPU features:

--- CPU FEATURES ---

Virtualization: Enabled, Disabled
AMD K8 Cool&Quiet Control: Enabled, Disabled
NPT Fid Control: (x5 - 1000mhz, x6 - 1200mhz, ... , x10 - 2000mhz, x11 - 2200mhz)
NPT Vid Control: Auto, 1.4v, 1.375v, 1.350v, ..., 0.5500v


But this is what mine shows:

Virtualization: Enabled, Disabled
AMD K8 Cool&Quiet Control: Enabled, Disabled
AMD CPU Stepping: 0,1


Could a custom bios flash enable these settings to appear? Or is there any way to force the voltage increase in AMD Overdrive?

Thanks for any help, I've been really trying to find a solution to this problem.