Do not turn off your computer or disconnect from the power source while updating the BIOS as this could harm your computer. During the update, your computer will restart and you may briefly see a black screen.
Before updating, please read the installation instructions and important information noted below.
Dell Server XR4510c and XR4520c Version 1.21.1
Restart required Installed This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.For more information about specific items added and resolved in this BIOS version, see the Fixes and New and enhanced features sections. If there's any security fix included in this BIOS, we'll address it in the BIOS external release note.
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Fixes & Enhancements
Enhancements:
-Added the following Secure Boot Certificates to the Standard Secure Boot Policy:
- Microsoft Corporation KEK 2K CA 2023
- Microsoft Option ROM UEFI CA 2023
- Microsoft UEFI CA 2023
- Windows UEFI CA 2023
- Any security fix information will be accessible on the Dell Security Advisories and Notices website.
Read More-Added the following Secure Boot Certificates to the Standard Secure Boot Policy:
- Microsoft Corporation KEK 2K CA 2023
- Microsoft Option ROM UEFI CA 2023
- Microsoft UEFI CA 2023
- Windows UEFI CA 2023
- Any security fix information will be accessible on the Dell Security Advisories and Notices website.
Version
1.21.1, 1.21.1
Release date
14 Dec 2025
Download Type
System BIOS
Category
BIOS
Importance
RecommendedDell Technologies recommends applying this update during your next scheduled update cycle. The update contains changes to maintain overall system health. It ensures that the system software remains current and compatible with other system modules (firmware, BIOS, drivers, and software) and may include other new features.
Available formats View Important Information
File Format: Update Package for MS Windows 64-Bit.
File Name: BIOS_FP79X_WN64_1.21.1.EXE
File Size: 33.22 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
Dell Update Packages in native Microsoft Windows 64-bit format do not require that Microsoft WOW64 be installed on the Microsoft Windows Server.
To ensure the integrity of your download, please verify the checksum value.
MD5:
a22bd006b4b4d3cc5d38fbad0da10d83
SHA1:
4d16d7b0e7fe759b9750ba0c6201cc474b976775
SHA-256:
23d5028e69b3bd916a4f1acaf991d43dc53ef5199fb62d9eb51e655b55364d94
File Format: A GnuPG file which contains a cryptographic signature
File Name: BIOS_FP79X_LN64_1.21.1.BIN.sign
File Size: 842 Bytes
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
The GnuPG signature for Red Hat Linux Update Package can be used to authenticate Dell's identity in the correlated Red Hat Linux Update Package.
To ensure the integrity of your download, please verify the checksum value.
MD5:
be8a5afcdc8bf876a4488eff739e6b39
SHA1:
850b29dd48b3ea5dfca4c4d0dd34c6fb5f7e9939
SHA-256:
e302d5f18fafd926f2aca812bbf4304c913b0c2f59a947f212723efa573ea271
File Format: A self-extracting file for use in 64-bit machines
File Name: XR4520-012101.efi
File Size: 12.1 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file contains compressed content that can be executed from the EFI Shell or EFI Boot Manager. Download the file to the EFI partition on a removable media device. Insert the removable media, then reboot the system and run the program from the EFI Shell or EFI Boot Manager.
To ensure the integrity of your download, please verify the checksum value.
MD5:
4643bc169a9454a98b2232cbaa9e0a5d
SHA1:
9360b12aba2460e0f9140e791a1b554a4f857308
SHA-256:
732994ae8842c85c66512505d2ad1b5d33d4219eb7c64dc032ad1234a23525d7
File Format: An archive of PDF files to provide help and procedural information to the customers
File Name: XR4510c_XR4520c_BIOS_1.21.1_ReleaseNote.pdf
File Size: 172.52 KB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This format consists of an archive of PDF files used to provide help and procedural information to the customer. It is necessary to install the Adobe Acrobat Reader first to view the files in this archive.
To ensure the integrity of your download, please verify the checksum value.
MD5:
43453d9a648c858be130e32cdfec8e1e
SHA1:
1a9e49f56375df16f031b519144011e886aae499
SHA-256:
5b2bfb384c8a8f6d5dbd45d69d0f79d5908ae76c7cd51e2d75cba6be139ddf5c
File Format: Update Package for Red Hat Linux
File Name: BIOS_FP79X_LN64_1.21.1.BIN
File Size: 22.6 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
Dell Update Packages for Linux can be used as stand-alone applications that ensure that specific validation criteria are met, then apply an update.
Note: Update Packages for Linux are open source. See the Dell Update Packages for Linux Readme for details.
Note: Update Packages for Linux are open source. See the Dell Update Packages for Linux Readme for details.
To ensure the integrity of your download, please verify the checksum value.
MD5:
0f18f02b526d5dde953d5960898ea68d
SHA1:
c0e35699ede483af188d5b9352ead045f21a43c8
SHA-256:
d8c503e750f51b6967e11905dbccd6bed332e6b1db3669b0cb5666d8b5eaa065
By downloading, you accept the terms of the Dell Software License Agreement.
Important Information
It's expected behavior for UEFI0074 to be recorded in the Lifecycle log or observed during the initial BIOS POST when upgrading or downgrading BIOS that has related policy changes.
Supported Operating Systems
Not Applicable
Applies to
BIOS
Installation instructions
Dell Update Package Instructions for DRMK
Download
1. Click the "Download" link to download the file.
2. If the Export Compliance Disclaimer window appears, click the "I agree" link if you accept the agreement.
3. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
NOTE: You must provide a DOS bootable media, such as a USB key. This executable file does not create the DOS system files.
1. Browse to the location where you downloaded the file.
2. Update the name of the file to DOS recognizable format (8.3). If you do not update the filename to 8.3 format, the filename will be truncated to 8.3 format.
3. Copy the file to the bootable device.
4. Boot the system to DOS by using the bootable device.
5. Run the executable under DOS. Follow the instructions provided by the flash utility.
-------------------------------------------------------------------------------
Dell Update Package Instructions for EFI
Download
1. Click the "Download" link to download the file.
2. If the Export Compliance Disclaimer window appears, click the "I agree" link if you accept the agreement.
3. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
You can update the BIOS using a UEFI shell bootable media, such as a USB key.
1. Copy the file to the bootable device with UEFI shell.
2. Boot the system to UEFI shell by using the bootable device.
3. Run the executable (.efi) under the UEFI shell. Follow the instructions provided by the flash utility.
You can also load this executable directly from BIOS Boot Manager without a UEFI shell bootable media.
1. Copy the file to a USB device
2. Plug in the USB device and press F11 during POST to enter BIOS Boot Manager
3. Navigate to the System Utilities menu and select BIOS Update File Explorer
4. Select the USB device and navigate through the directory contents to find the executable (.efi)
5. Launch the executable and follow the instructions provided by the flash utility.
--------------------------------------------------------------------------------
Dell Update Package Instructions for Linux DUP:
Download
1. Click the "Download" link to download the file.
2. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
1. Read over the release information presented by executing the "./[model]_BIOS_LX_[revision].BIN --version" command from the shell.
2. Download and install any prerequisites identified in the above step before proceeding.
3. Install any necessary Embedded Systems Management firmware prior to this BIOS update.
4. Run the update by executing "./[model]_BIOS_LX_[version].BIN" from the shell.
5. Follow the remaining prompts to perform the update.
--------------------------------------------------------------------------------
Dell Update Package Instructions for Windows Dup:
Download
1. Click the "Download" link to download the file.
2. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
1. Browse to the location where you downloaded the file and double-click the new file.
2. Read over the release information presented in the dialog window.
3. Download and install any prerequisites identified in the dialog window before proceeding.
4. Install any necessary Embedded Systems Management firmware prior to this BIOS update.
5. Click the Install button.
6. Follow the remaining prompts to perform the update.
---------------------------------------------
GnuPG Signature of Dell Update Package Instructions:
Download
1. Click the "Download" link to download the file.
2. When the "File Download" window appears, click "Save" to save the file to your hard drive.
Installation
1. Import the Dell public key. (You only need to do once on your system.)
2.Verify the Dell Update Package by using its signature file, [model]_BIOS_LX_[version].BIN.sign
Download
1. Click the "Download" link to download the file.
2. If the Export Compliance Disclaimer window appears, click the "I agree" link if you accept the agreement.
3. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
NOTE: You must provide a DOS bootable media, such as a USB key. This executable file does not create the DOS system files.
1. Browse to the location where you downloaded the file.
2. Update the name of the file to DOS recognizable format (8.3). If you do not update the filename to 8.3 format, the filename will be truncated to 8.3 format.
3. Copy the file to the bootable device.
4. Boot the system to DOS by using the bootable device.
5. Run the executable under DOS. Follow the instructions provided by the flash utility.
-------------------------------------------------------------------------------
Dell Update Package Instructions for EFI
Download
1. Click the "Download" link to download the file.
2. If the Export Compliance Disclaimer window appears, click the "I agree" link if you accept the agreement.
3. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
You can update the BIOS using a UEFI shell bootable media, such as a USB key.
1. Copy the file to the bootable device with UEFI shell.
2. Boot the system to UEFI shell by using the bootable device.
3. Run the executable (.efi) under the UEFI shell. Follow the instructions provided by the flash utility.
You can also load this executable directly from BIOS Boot Manager without a UEFI shell bootable media.
1. Copy the file to a USB device
2. Plug in the USB device and press F11 during POST to enter BIOS Boot Manager
3. Navigate to the System Utilities menu and select BIOS Update File Explorer
4. Select the USB device and navigate through the directory contents to find the executable (.efi)
5. Launch the executable and follow the instructions provided by the flash utility.
--------------------------------------------------------------------------------
Dell Update Package Instructions for Linux DUP:
Download
1. Click the "Download" link to download the file.
2. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
1. Read over the release information presented by executing the "./[model]_BIOS_LX_[revision].BIN --version" command from the shell.
2. Download and install any prerequisites identified in the above step before proceeding.
3. Install any necessary Embedded Systems Management firmware prior to this BIOS update.
4. Run the update by executing "./[model]_BIOS_LX_[version].BIN" from the shell.
5. Follow the remaining prompts to perform the update.
--------------------------------------------------------------------------------
Dell Update Package Instructions for Windows Dup:
Download
1. Click the "Download" link to download the file.
2. When the File Download window appears, click "Save" to save the file to your hard drive.
Installation
1. Browse to the location where you downloaded the file and double-click the new file.
2. Read over the release information presented in the dialog window.
3. Download and install any prerequisites identified in the dialog window before proceeding.
4. Install any necessary Embedded Systems Management firmware prior to this BIOS update.
5. Click the Install button.
6. Follow the remaining prompts to perform the update.
---------------------------------------------
GnuPG Signature of Dell Update Package Instructions:
Download
1. Click the "Download" link to download the file.
2. When the "File Download" window appears, click "Save" to save the file to your hard drive.
Installation
1. Import the Dell public key. (You only need to do once on your system.)
2.Verify the Dell Update Package by using its signature file, [model]_BIOS_LX_[version].BIN.sign
Need help with BIOS issues?
Find a solution in Dell's BIOS troubleshooting guideDrivers help and tutorials
For more downloads go to the Drivers and downloads. For help on using the information on this page, please visit Driver Help and Tutorials.