The latest BIOS update for my motherboard (P67A-G45) is version 1.D on MSI's website (msi.com/product/mb/P67A-G45--B3-.html#/?div=BIOS), but the latest update for the P67A-G43 is much newer (version 1.I) on MSI's website (msi.com/product/mb/P67A-G43--B3-.html#/?div=BIOS).
From downloading the P67A-G43 1.I update, it appears that the two motherboards use the same BIOS. Does this mean it is safe for me to flash the P67A-G43 BIOS to my P67A-G45 and if so, why hasn't the MSI website been updated?