Beside the PLX, I only see one GTX 690. I am overriding Board ID mismatch. Just after that, I get the hierarchy error.
Basically, this is it:
"D:\nvflash>nvflash -i1 -4 rom2.rom
NVIDIA Firmware Update Utility (Version 5.134)
Checking for matches between display adapter(s) and image(s)...
Adapter: GeForce GTX 690 (10DE,1188,3842,2690) H:02:SP16 B:04,PCI,D:00,F:00
WARNING: Firmware image Board ID (E103) does not match adapter Board ID (E102).
WARNING: Firmware image Hierarchy ID (Switch Port 8)
either does not match the Hierarchy ID of the adapter (Switch Port 16)
or does not match the Hierarchy Role of the adapter (Switch Port 16).
*** WARNING: Overriding the Board ID can be very dangerous. ***
Upgrading to an image with the wrong Board ID can render the video card
Overriding the Board ID is only needed for extreme circumstances.
A mismatched Board ID almost always means the wrong firmware image is being
used for the specific video card.
Are you sure you want to continue?
Type "YES" to confirm (all caps):
Overrding Board ID mismatch
ERROR: Hierarchy mismatch"