I've had three boards die due to bad flashes in my time. One was a dual BIOS board. What I found is that the dual BIOS board didn't help a bit. To be perfectly honest, I didn't even tell it to flash. The board simply rebooted after a crash and booted from the backup BIOS for some reason. It automatically reflashed the primary BIOS with itself, but ironically the backup was corrupt even though the primary had been fine. Dead. The other simply failed to write after clearing. I retried 3 times or so, but the flash was just faulty. Dead. The last one I don't know why it didn't work. It said it successfully flashed, but it never worked again.

I would find this sort of device quite useful.