Bios Mods -The Best BIOS Update and Modification Source

I'd like to request for an unlocked BIOS for HP G60-231WM as I want to get the best out of this old pc such as overclocking (if possible). Thanks in advance.

Here's the link for my BIOS: https://support.hp.com/us-en/drivers/sel...ob-76825-1

Current specifications (Basic):

OS: Microsoft Windows 10 Pro
Processor: AMD Athlon Dual-Core QL-64 2.10 GHz
Graphics: NVIDIA GeForce 8200M G
RAM: 3 GB (2.7 GB usable)