Supermicro AS-1115HS-TNR - UEFI BIOS Recovery; Overview; Recovering the UEFI BIOS Image; Recovering the Main BIOS Block with a USB Device

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Chapter 7: Troubleshooting and Support
7.5 UEFI BIOS Recovery
Warning: Do not upgrade the BIOS unless your system has a BIOS-related issue. Flashing
the wrong BIOS can cause irreparable damage to the system. In no event shall Supermicro
be liable for direct, indirect, special, incidental, or consequential damages arising from a BIOS
update. If you do update the BIOS, do not shut down or reset the system while the BIOS is
updating to avoid possible boot failure.
Overview
The Unied Extensible Firmware Interface (UEFI) provides a software-based interface
between the operating system and the platform rmware in the pre-boot environment. The
UEFI specication supports an architecture-independent mechanism that will allow the UEFI
OS loader stored in an add-on card to boot the system. The UEFI o󰀨ers clean, hands-o󰀨
management to a computer during system boot.
Recovering the UEFI BIOS Image
A UEFI BIOS ash chip consists of a recovery BIOS block and a main BIOS block (a main
BIOS image). The recovery block contains critical BIOS codes, including memory detection
and recovery codes for the user to ash a healthy BIOS image if the original main BIOS image
is corrupted. When the system power is turned on, the recovery block codes execute rst.
Once this process is complete, the main BIOS code will continue with system initialization
and the remaining POST (Power-On Self-Test) routines.
Note 1: Follow the BIOS recovery instructions below for BIOS recovery when the main BIOS
block crashes.
Note 2: When the BIOS recovery block crashes, you will need to follow the procedures
to make a Returned Merchandise Authorization (RMA) request. Also, you may use the
Supermicro Update Manager (SUM) Out-of-Band (https://www.supermicro.com.tw/products/
nfo/SMS_SUM.cfm) to reash the BIOS.
Recovering the Main BIOS Block with a USB Device
This feature allows the user to recover the main BIOS image using a USB-attached device
without additional utilities used. A USB ash device device can be used for this purpose.
However, a USB Hard Disk drive cannot be used for BIOS recovery at this time.
The le system supported by the recovery block is FAT (including FAT12, FAT16, and FAT32)
which is installed on a bootable or non-bootable USB-attached device. However, the BIOS
might need several minutes to locate the SUPER.ROM le if the media size becomes too
large due to the huge volumes of folders and les stored in the device.
To perform UEFI BIOS recovery using a USB-attached device, follow the instructions below.