Are the BIOSes of two (almost) identical boards compatible?

Question

Iron

There is a Gigabyte GA-P67A-UD3 motherboard .
As you may remember, there was noise associated with SATA ports with Intel 6-series chipsets ; I ignored it and bought a board with a possibly defective chipset, which, fortunately, works fine so far.
The manufacturer has released an updated version of the board - GA-P67A-UD3-B3 . These boards are almost identical in specification.

However, BIOS updates began to be released only for the latter, with a working chipset. In particular, the UEFI update that I would like to try out. There is no practical purpose, I just want to look at it.

Actually, I would like to ask you to compare the specifications and evaluate the BIOS compatibility of these two boards.

Answer 1

Gigabyte has dual bios. If you somehow flash and the BIOS turns out to be inoperative, it will return the old one from another memory.

Answer 2

If I were you, I'd rather not try. Because if suddenly there the check will allow and all the same it will be sewn - that is, there is a very high probability that it will not work at all. And imagine what a headache it is. Well, in fact - neither the speed of work nor anything else you are unlikely to succeed.

Answer 3

Well, on the last three UEFI laptops that passed through me, I didn’t notice anything but a beautiful BIOS menu with mouse support. the seven got up there, linux from the CD also started up and transferred the documents to the USB flash drive before formatting the screw.
So I don’t see the point in messing around with the chance to break everything.

Answer 4

I would take advantage of the fact that the Award BIOS would open it with some kind of "Award BIOS Editor" and compare the contents. After that, you can decide to sew or not.