Predator PHN16-72 - Unlock bios for undervolt

[OleManBoB]

Hi

Would greatly appreciate being able to undervolt my laptop. Acer has disabled access to prevent overclocking. Not interested in overclocking.
Just want to undervolt the 14900HX. 

Have performed undervolting on other PC's with Throttlestop in the past so I have some familiarity.
However, I know nothing about performing a 'Bios Dump' so I will need some advice as to how I go about doing that correctly.

Acer Predator PHN16-72-99B2 
Bios ver 1.16

Thanks in advance.