[PROBLEM] Save the BIOS under Windows. Size > 16 MB

BIOS/UEFI Modding BIOS Modding Guides and Problems
1

H!,

I tried with AFUWINGUI v15.12.03.2074 to save the bios.
Unfortunately, the bios - image was only 16 MB in size

MSI B450M Mortar Max:

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Some MSI motherboards got a bigger Rom chip.
As a result, the BIOS image is twice as large as usual 32MB.

Are there other ways to save the BIOS on Windows?
Without reading the chip directly?