  File BIOSUBU.BIN, which contains an off-chip boot loader, root key, and iKEK is read, and
   the off-chip boot loader is loaded, verified, and started.

  When BIOS Firmware Update Fails
   If the BIOS firmware fails to be updated or accidental disconnection causes firmware
   update fail, follow these steps to update BIOS firmware:

   1. Locate these two files in the BIOS package and save them in a USB 2.0 flash drive:
    BIOSUBU.BIN and the BIOS image file, e.g., "BIOS_H13SAE-1C97_20230329_1.0_
    STDsp.bin."

   2. Rename the BIOS image file (e.g., "BIOS_H13SAE-1C97_20230329_1.0_STDsp.bin")
    as "PSPBIOS.IMG.

   3. While the system is in shutdown state, insert the flash drive to the designated USB port,
    hold down the Update button on the motherboard and press the Power button on the
    system.

   4. Wait about ten minutes for the update to complete. When the update is complete, the
    system will automatically restart.



