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 EMC Server PowerEdge BIOS R740/R740xd/R640/R940/7920R Version 2.7.7
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.Issue with MSR 0x1AD which interfered with the new Turbo Ratio Limits is fixed, without impacting factory default settings. Added the "Balanced Memory Mode" option under "Intel Persistent Memory Performance" in System Profile setting. Fixed issue with the memory capacity changing when "Node Interleaving" or "Sub NUMA Cluster" is enabled. For more information about specific items added and resolved in this BIOS version, see the Fixes and New and enhanced features sections.
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Fixes & Enhancements
Fixes
- Issue with MSR 0x1AD which interfered with the new Turbo Ratio Limits has
been fixed, without impacting the factory default settings.
- Added the 'Balanced Memory Mode' option under 'Intel Persistent Memory Performance' in System Profile setting.
- Issue with the memory capacity changing when 'Node Interleaving' or 'Sub NUMA Cluster' is enabled.
- Fixed other miscellaneous issues.
Enhancements
- Updated the 'Processor and Memory Reference Code' for the second-generation
Intel(R) Xeon Processor Scalable Family to IPU 2020.1.
- The S140 firmware is updated to 5.5.2-0006.
- Improved the performance of 4-socket servers by adding 'FastGo' and 'IRQ Throttle' under Processor Settings in System BIOS.
- The memory self-healing feature is added to perform memory
self-healing after an uncorrectable error (MEM 0001) or burst of correctable
errors (MEM 8000). Memory self-healing for a MEM 0001 event will
execute automatically, but for a series of MEM 8000 events, self-healing is
initiated after a system restart.
Read More- Issue with MSR 0x1AD which interfered with the new Turbo Ratio Limits has
been fixed, without impacting the factory default settings.
- Added the 'Balanced Memory Mode' option under 'Intel Persistent Memory Performance' in System Profile setting.
- Issue with the memory capacity changing when 'Node Interleaving' or 'Sub NUMA Cluster' is enabled.
- Fixed other miscellaneous issues.
Enhancements
- Updated the 'Processor and Memory Reference Code' for the second-generation
Intel(R) Xeon Processor Scalable Family to IPU 2020.1.
- The S140 firmware is updated to 5.5.2-0006.
- Improved the performance of 4-socket servers by adding 'FastGo' and 'IRQ Throttle' under Processor Settings in System BIOS.
- The memory self-healing feature is added to perform memory
self-healing after an uncorrectable error (MEM 0001) or burst of correctable
errors (MEM 8000). Memory self-healing for a MEM 0001 event will
execute automatically, but for a series of MEM 8000 events, self-healing is
initiated after a system restart.
Version
2.7.7, 2.7.7
Release date
14 Jul 2020
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_M0HYG_WN64_2.7.7_01.EXE
File Size: 27.5 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:
968975b6ac6669d57f1abbf4ec9c9643
SHA1:
3f3bf82b75283020db02a27ce3c9b4245b47857f
SHA-256:
2908e7b9d9127acac9357f3c4f16667ffd23dbad59235369bc9fa987c7e3e4ed
File Format: A GnuPG file which contains a cryptographic signature
File Name: BIOS_M0HYG_LN_2.7.7_01.BIN.sign
File Size: 226 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:
f93feb0941afdca9ac4f7014fa47d812
SHA1:
44e9640236072dd1e51d0d5d2a7a838997b58427
SHA-256:
cd0cbf54442f9bc53c9f9718ceb20bc0d6a66bdad9dfaead99f0efa554a5e7b5
File Format: A self-extracting file for use in 64-bit machines
File Name: R740-020707.efi
File Size: 19.46 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:
e02169511c0e3658a1be9ab2e8629146
SHA1:
d1d6bd6e4beaad1aae6367571229372376095b13
SHA-256:
0525462971fb1536007cd69f5af2ff9e116dd48ee3b8a13070dc449696351ee3
File Format: An archive of PDF files to provide help and procedural information to the customers
File Name: R740_R740XD_R640_R940_Perc7920_BIOS.2.7.7.pdf
File Size: 196.81 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:
e5d0d51a54e77339ebdd07e274c0f9e5
SHA1:
0aeb066b3b9c6ac7eb98ddef480bb2762d7218e0
SHA-256:
dcb1aabb31d1d02672f82dcf03931018cb5f2f5eb8ded995b2cc37c4e9346542
File Format: Update Package for Red Hat Linux
File Name: BIOS_M0HYG_LN_2.7.7_01.BIN
File Size: 28.86 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:
30e7f143380dcbd75935c6901465a7a2
SHA1:
56e369c3562f543ff40b0f5e607ffb628b9055bf
SHA-256:
0896c239fdcd240cfbcdfa4cfbeae456a12318a76f282a2bf397800346f35557
By downloading, you accept the terms of the Dell Software License Agreement.
Important Information
Intel strongly recommends you to not disable the "Monitor/MWait" option on 2-socket servers, because disabling the Monitor/MWait feature is currently not supported for 2-socket PowerEdge servers.
When you try updating a BIOS version either under OS (by using an Update Package (DUP)) or under UEFI Shell (a .efi file), the system may take more time to complete the BIOS update process (in case of a system that has 14 TB memory, it takes around 30 minutes to complete the BIOS update process under Windows Server 2016). There are two ways to work around this issue:
- Use an out-of-band BIOS update method--IDRAC Graphical User Interface (GUI) or RACADM Command Line Interface (CLI) command.
- Physically reduce the memory capacity by removing a few memory modules (and thus improve the speed of the BIOS update process), and then try again.
When you try installing one or more PCIe devices on the system and if the cards require more limited legacy I/O resources, then the system may adjust the legacy I/O resources between the stack and the reboot system automatically. If the system fails during the allocation of PCI resources, then a UEFI0256 error message is logged. You can perform one of the following actions and retry the operation:
- Remove unused PCIe card to free up legacy I/O space.
- Go to System Setup and disable unused PCIe card to free up legacy I/O space.
When you try updating a BIOS version either under OS (by using an Update Package (DUP)) or under UEFI Shell (a .efi file), the system may take more time to complete the BIOS update process (in case of a system that has 14 TB memory, it takes around 30 minutes to complete the BIOS update process under Windows Server 2016). There are two ways to work around this issue:
- Use an out-of-band BIOS update method--IDRAC Graphical User Interface (GUI) or RACADM Command Line Interface (CLI) command.
- Physically reduce the memory capacity by removing a few memory modules (and thus improve the speed of the BIOS update process), and then try again.
When you try installing one or more PCIe devices on the system and if the cards require more limited legacy I/O resources, then the system may adjust the legacy I/O resources between the stack and the reboot system automatically. If the system fails during the allocation of PCI resources, then a UEFI0256 error message is logged. You can perform one of the following actions and retry the operation:
- Remove unused PCIe card to free up legacy I/O space.
- Go to System Setup and disable unused PCIe card to free up legacy I/O space.
Supported Operating Systems
Not Applicable
Applies to
INFO,BIOS LOCK,R640XL,DECFY21
INFO,BIOS LOCK,R740XL,DECFY21
INFO,BIOS,LCK,FW,2.7.7
PowerEdge BIOS
Installation instructions
Dell EMC Update Package Instructions for EFI
Download
1. Click the "Download Now" 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 EMC Update Package Instructions for Linux DUP:
Download
1. Click the "Download Now" 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 EMC Update Package Instructions for Windows Dup:
Download
1. Click the "Download Now" 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 EMC Update Package Instructions:
Download
1. Click the "Download Now" 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 EMC public key. (You only need to do once on your system.)
2. Verify the Dell EMC Update Package by using its signature file, [model]_BIOS_LX_[version].BIN.sign
Download
1. Click the "Download Now" 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 EMC Update Package Instructions for Linux DUP:
Download
1. Click the "Download Now" 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 EMC Update Package Instructions for Windows Dup:
Download
1. Click the "Download Now" 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 EMC Update Package Instructions:
Download
1. Click the "Download Now" 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 EMC public key. (You only need to do once on your system.)
2. Verify the Dell EMC 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.