trying to understand how to unlock my Narra6-GL6 bios

Hello

I have been trying to unlock my bios for a few days now with no luck.

[motherboard info]
pegatron narra5 5.00
(chipset)
NVIDIA mcp61 rev.A3
(southbridge)
NVIDIA mcp61 rev.A2
(LPCIO)
Fintek F8000
[BIOS info]
(brand)
Phoenix Technologies, LTD
(version)
5.52
(date)
09/14/2009

I was trying to unlock it my self, if some one could point me in to the right area on the web. Even send me one that has already been unlocked that would be helpfull.

Thank you