Mobo1 - mobo with problem
Mobo2 - mobo for hotswap
FU1 - official flash utility for Mobo1
FU2 - official flash utility for Mobo2
At first i'm try FU2 on Mobo2 with command line key to prevent check BIOS version. If it doesn't work, then i'm try other flash utility (or other version FU2).
Mobo1 - mobo with problem
Mobo2 - mobo for hotswap
FU1 - official flash utility for Mobo1
FU2 - official flash utility for Mobo2
At first i'm try FU2 on Mobo2 with command line key to prevent check BIOS version. If it doesn't work, then i'm try other flash utility (or other version FU2).