Unlock intel 915 chipset to support Core 2 Duo CPUs

[mirra]

Hello,

please, is it any possible to unlock following bioses?
If yes, how?

1) https://www.gigabyte.com/Motherboard/GA-...-rev-1x#sp

2) P5LD2 SE rev 1.x https://www.asus.com/Motherboards/P5LD2_...pDesk_CPU/



3) Intel 915GAG:
https://www.intel.com/content/www/us/en/...oards.html

4) Instel 915GAV:
https://www.intel.com/content/www/us/en/...oards.html

Thank you for any help or advice how to do it.
(I already flashed many motherboards but never tried to do some custom bios)