Download Files
File Format: Dell Update Packages in native Microsoft Windows 64-bit format do not require that Microsoft WOW64 be installed on the Microsoft Windows Server.
File Name: BIOS_YR3W9_WN64_2.25.0.EXE
File size: 38.81 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 8edd64c78ac87ea3b49bd3fb9f5f771a
SHA1: 4e3f20fea33e7ed3a6ec3fc099667100fea50864
SHA-256: 96a859b50276b5355229604361797b516a3c3adf28362e04e97ed08294b6056b
File Format: 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.
File Name: BIOS_YR3W9_LN64_2.25.0.BIN.sign
File size: 842 Bytes
To ensure the integrity of your download, please verify the checksum value.
MD5: d12f3909ae034e7301ee86f989cad554
SHA1: 68f22cd9f3a2ccdc9b1513479ba083ad67e2e7cd
SHA-256: 1a3e5becd1675d0ae7eb296d47a009382a93ef5a9a92fe5b6b1da1d1430c52e9
File Format: 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.
File Name: C6420-022500.efi
File size: 19.38 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: ecaf05894b9843fb02b67b1a12942034
SHA1: b862823c720aa20ec36aaa64fa3e0e3a21ed394c
SHA-256: 80620a5c8e90d242a29f36b44da47459a161e657f924da5e7aaf15b003b430d1
File Format: 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.
File Name: C6420_BIOS.2.25.0_RN.pdf
File size: 303.4 KB
To ensure the integrity of your download, please verify the checksum value.
MD5: 5eb80019d21430dedd0539b14d2dac23
SHA1: 37cd9a9a127f841b2e0a5b29b7f3631bcb84e8a1
SHA-256: c2307a4a73cce02d5d02a6fc8e7495e7911a32dbb7db412215f120d1e2cdf5b8
File Format: 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.
File Name: BIOS_YR3W9_LN64_2.25.0.BIN
File size: 29.24 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 3b636cb3d2ac5cc96a1b305d2fc9c590
SHA1: 5fce76366df4b34f6819239b87258099ca5fff83
SHA-256: 92e107fb0ba478a535d1690df7e2675e7130371debb176e2943a2d398532c6dd
Fixes & Enhancements
Fixes:
- Fixed an issue that "PXE/VirtualCD Boot request by iDRAC" doesn't work in BIOS legacy boot mode.
New and enhanced features
- Updated the following:
* The Integrate Intel Purley Refresh IPU 2025.3 PV Candidate Reference Code version 632P07
* Update SPS to SPS_E5_04.01.05.201.0
- Added the following Secure Boot certificates to the default Secure Boot Standard Policy:
* Microsoft Corporation KEK 2K CA 2023
* Microsoft Option ROM UEFI CA 2023
* Microsoft UEFI CA 2023
* Windows UEFI CA 2023
Important Information
It's expected behavior for UEFI0074 to be recorded in Lifecycle log or observed during the initial BIOS POST when upgrading/downgrading BIOS from v2.24.0 (or older) to v2.25.0.
- Due to a sighting, Dell has demoted BIOS 2.22.1 for PowerEdge R740, R740xd, R640, and R940, and Precision 7920 Rack Workstation.
- Rolling back to a previous BIOS from 2.14.2 will cause a TXT trusted boot failure with TXT enabled. Since the Intel ACM's SVN (Security Version Number) was increased in BIOS 2.14.2 to address the Security Vulnerabilities CVE-2021-0559, CVE-2021-33123, CVE-2021-33124. The purpose of incrementing the SVN is to prevent executing an older ACM with the vulnerabilities.
* The INTEL ACM's SVN was also increased in the BIOS 2.9.4 since the 1st BIOS revision of this platform as well.
- When using an Update Package (DUP) file or the UEFI Shell command (an EFI file) to update the BIOS version, the process takes longer duration. To resolve this issue, do one of the following:
* Update the BIOS version using an Out-of-Band (OoB) tool such as iDRAC--use GUI or run the RACADM command. See the iDRAC User's Guide or RACADM CLI Reference Guide available on the support site.
* Reduce the system memory capacity by physically removing the memory modules and perform the BIOS update and retry the operation.
- When one or more PCIe devices are installed on the system and if the cards require more of limited legacy I/O resources, the system might modify the I/O resources causing it to restart automatically. The UEFI0256 error message is logged, and the system does not allocate the PCIe resources required. To resolve this issue, do one of the following:
* Remove the PCIe cards from the system that are not used to free up the legacy I/O allocation and provide more I/O allocation space.
* From the System Setup menu, disable to PCIe cards that are not used to free up the legacy I/O allocation.
- When one or more PCIe devices are installed on the system and if the cards require more of Memory-Mapped I/O (MMIO) resources, the system might modify the MMIO resources causing it to restart automatically. The UEFI0256 error message is logged, and the system does not allocate the required PCIe resources required. To resolve this issue, do one of the following:
* Remove the PCIe cards from the system that are not used to free up the MMIO allocation.
* From the System Setup menu, enable the Memory Mapped I/O above 4GB option to free up the MMIO allocation.
NOTE: Before working inside your system, follow the safety guidelines listed in the Safety Instructions topic in the Installation and Services Manual of your respective server model available on the support site.
Supported Operating Systems
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.
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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.
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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.
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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.
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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