HP Z400 Older Bios version

[redmello]

Hello everyone.
I need some help .... I have an HP Z400 with an Intel Xeon X5650 and I have a problem with the Interrupt Remapping function which was disabled by default in the bios because the Intel x58 chipset returned some errors.
I currently have the latest version of the bios HP Version 786G3 v03.61 05/03/2018.
I would like to try to downgrade the bios at my own risk but I only have an old backup of the HP Version 786G3 v03.10 07/09/2010 bios created with Universal BIOS Backup Toolkit v 2.0.
I mistakenly created a ROM file instead of a bin file but I read in this forum:

https://www.bios-mods.com/forum/Thread-h...rom-to-bin

that it is sufficient to change the extension and that the problems concern the fact that the bios is capsulated. At this point I can no longer proceed and the bios as it is is not recognized.
I attach the working bin file v03.61 and the non-working bin file v03.10 (rom file renamed).

Can anyone help me?

Thank you.