Updating the BIOS

The new ASUS UEFI BIOS
is a Unified Extensible Interface that complies with UEFI architecture,
offering a user-friendly interface that goes beyond the traditional keyboard
only BIOS controls to enable a more flexible and convenient mouse input.
You can easily navigate the new UEFI BIOS with the same smoothness as
your operating system. The term “BIOS” in this user manual refers to “UEFI
BIOS” unless otherwise specified.

BIOS (Basic Input and Output
System) stores system hardware settings such as storage device configuration,
overclocking settings, advanced power management, and boot device configuration
that are needed for system startup in the motherboard CMOS. In normal
circumstances, the default BIOS settings apply to most conditions to ensure
optimal performance. DO NOT change the default BIOS settings except in
the following circumstances:

• An error message appears
on the screen during the system bootup and requests you to run the BIOS
Setup.

• You have installed a
new system component that requires further BIOS settings or update.

• Inappropriate
  BIOS settings may result to instability or boot failure. We
  strongly recommend that you change the BIOS settings only
  with the help of a trained service personnel.

• When
  downloading or updating the BIOS file, rename it as X399A.CAP for this motherboard.

The
BIOS Setup program can be used to view
and change the BIOS settings for the computer.
You can access the BIOS Setup program by pressing the Delete
key after the Power-On
Self-Test
(POST) memory
test begins and before the operating system boot
begins.

There are two modes available to use the BIOS
Setup program.

1. EZ Mode – by default the EZ mode screen
   appears when you enter the BIOS program.

2. Advanced Mode
   – to access this mode, click Exit/Advanced
   Mode, then select Advanced
   Mode or press <F7> on your keyboard.

This section tells you how
to update the BIOS by
using one of three different utilities:

1. Asus
   Update:
   Updates the BIOS
   in a Windows environment.

2. Asus EZ Flash 3:  Updates the BIOS
   using a USB flash drive.

3. ASUS CrashFree
   BIOS 3:
   Restores the BIOS using the motherboard
   support DVD or a USB
   flash drive when the BIOS file fails
   or gets corrupted.

EZ

Update

EZ
Update is a utility that allows you to update the motherboard BIOS in
Windows environment.

• EZ Update requires an Internet
  connection

Updating the BIOS using the ASUS EZ Flash
3 utility

ASUS EZ Flash 3 allows you to update the
BIOS without having to use a bootable floppy disk or an OS-based utility.

• Before
  you start using this utility, download
  the latest BIOS from the ASUS
  website at www.asus.com/support.

 To use this
BIOS update method with USB:

1. Enter the Advanced Mode of the BIOS
   setup program. Go to the
   Tool menu to select ASUS EZ Flash Utility and then press <Enter> to enable
   it.

2. Insert the USB flash
   drive that contains the BIOS file.

3. Select “by USB”

4. Press <Tab>
   to switch to the Drive field.

5. Press
   the Up/Down arrow keys to find the USB
   flash drive that contains the latest BIOS ,
   and then press <Enter>.

6. Press
   <Tab> to switch to the Folder
   Info field.

7. Press
   the Up/Down arrow keys to find the BIOS
   file, and then press <Enter> to perform the BIOS
   update process.  Reboot the system when the update process is
   complete.

• This
  function can only support devices, such as a USB
  flash drive, with FAT32/16 and single partition.

• Do
  NOT shut down or reset the system while updating the BIOS
  to prevent system boot failure!

• To
  ensure system compatibility and stability, load the BIOS
  default settings by selecting Load
  Optimized Defaults on the Exit
  menu.

To
use this BIOS update method with the Internet:

1. Enter the Advanced Mode of the BIOS
   setup program. Go to the
   Tool menu to select ASUS EZ Flash Utility and then press <Enter> to enable
   it.

2. Select “by Internet”

3. Press
   the Left/Right arrow keys to select an Internet connection method
   and then press <Enter>.

4. Follow
   the onscreen instructions to complete the update.

5. Reboot
   the system when the update process is done.

• To
  ensure system compatibility and stability, load the BIOS
  default settings by selecting Load
  Optimized Defaults on the Exit
  menu.

Restoring the BIOS with the ASUS CrashFree
BIOS 3 Utility

The
ASUS CrashFree BIOS 3 utility is an auto
recovery tool that allows you to restore the BIOS
file when it fails or gets corrupted during the updating process.  You
can restore a corrupted BIOS file using
the motherboard support DVD or a USB
flash drive that contains the BIOS file.
 The latest BIOS can be downloaded
from www.asus.com/support.

To recover the BIOS :

1. Turn
   on the system.

2. Insert
   the motherboard support DVD or the
   USB flash drive containing the BIOS
   file.

3. The
   utility automatically checks the devices for the BIOS
   file.  When found, the utility reads the BIOS
   file and enters the ASUS EZ Flash 3 utility automatically.

4. The
   system requires that you enter the BIOS
   Setup to recover BIOS settings. To
   ensure system compatibility and stability, we recommend that you press
   <F5> to load the default BIOS
   values.

• Do
  NOT shut down or reset the system while updating the BIOS
  to prevent system boot failure!