I went to check random things to try to find a clue as to what is causing the issue with that one card.

I opened ATIwinFlash and noticed that the card that's having the issue has a different "Flash Type" than the other two which are working fine.

The Flash Type on the card giving me the headache is: GD25Q41B

The other two cards have the same flash type: M25P20/c

The Flash Type remains the same regardless of which BIOS rom I use.

What is the difference between M25P20/c and GD25Q41B ??

Is it possible I'm using an incompatible rom?!

I'm using the one from this video: https://www.youtube.c0m/watch?v=uiPCwJV_ryM