[Request] ASRock P4-dual GL915, advanced menu expansion

Hello, i'm not sure if i'm right here but i'll just give it a go.

specs, ASRock P4 dual GL915 mainboard with AMI v02.58 bios

I need to thoroughly down grade my system for specialized purpuses (making audio player according to the now empty but very interesting website: http://cicsmemoryplayer.com/)

unfortunately i need to use an old mainboard / memory / cpu configuration that i have lying around.

as since the time i bought this. i really haven't been up to graps with the pc world and definitely bioses, [censored] i didn't even know about the existence of eufi.

now i found out that usually the advanced menu is locked. but i have an advanced menu, only the CPU ratio seems to be locked but for one i need to change this (from 21 to 9, so yes downwards) but also extensive voltage parameters from all over the mainboard.

now i am confused. are all these parameters locked? or are they really adsent. if absent is there an alternative bios that i can use to mod this into existence? or some tools?

i really hope you can help me, to start with an answer if there is or isn't a possibility to mod this bios at all... if possible. how, but that might be oke for later.

if i get an answer i know if i have to dive into the world of 2e hand mainboards to find myself a suitable one (if any advice on this topic would than also be greatly appreciated!!!! )

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