Dell POWEREDGE R620 - Manual (Page 11)

Updating BIOS on Dell 12G PowerEdge Servers
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4. Copy the file to the bootable device.
5. Boot the system to DOS by using the bootable device.
6. Run the executable under DOS. Follow the instructions provided by the flash utility. Figure 6 is
a snapshot of the DOS flash utility. The update will take a minute or so, and a system reboot is
required after the update is completed.
DOS-based BIOS flash utility Figure 6.
UEFI-based BIOS Flash Utility
Dell releases a UEFI-based BIOS flash utility for each 12 th generation platform. There are two ways to
utilize this utility, one is to run it from a UEFI shell, and the other is to load it directly from BIOS Boot
Manager.
Run BIOS Flash Utility in a UEFI Shell
In this method, you must provide a UEFI-bootable device, such as a USB key. To make a USB key
bootable in UEFI mode, you can download the UEFI shell binary from the UEFI open source website
( ttp://sourceforge.net/apps/mediawiki/tianocore/index.php?title=UEFI_Shell ) and save it as the
following file on the USB key:
efi\boot\bootX64.efi
To update the BIOS under the UEFI shell, perform the following steps:
1. Copy the downloaded UEFI BIOS flash utility (for example, R720-010100.efi) to the USB key
which has the UEFI shell.