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 BIOS PowerEdge MX840c Version 2.5.4

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.
- Added the Intel Speed Select Technology - Base Frequency (SST-BF) feature.
- Updated the "Processor and Memory Reference Code" to 0595.D.04.
- Updated a few BIOS Setup help messages.
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
- Updated a few BIOS Setup help messages
- Fixed a potential BIOS Recovery failure.
- Issues that were not reported by the Dell EMC customers at the time of current release.

Enhancements
- Added Intel(R) Speed Select Technology - Base Frequency (SST-BF) feature.
- Updated the "Processor and Memory Reference Code" to 0595.D.04.
- Added "Correctable Error Logging" Enable/Disable to System BIOS Settings -> Memory Settings.
- Enhanced LifeCycle Error Messages regarding Correctable Memory Errors. Please upgrade both BIOS and iDRAC firmware to ensure the correct display of the new messages in the LifeCycle logs.
- Changed the default setting of Native tRFC Timing for 16 Gb DIMMs to Enabled.
- In some cases, the memory space-indicated by OS as reserved for hardware-is reduced.
Read More

Version

2.5.4, 2.5.4

Release date

21 Feb 2020

Download Type

System BIOS

Category

BIOS

Importance

Recommended
Dell 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: MX840c_BIOS_M63NN_WN64_2.5.4.EXE
File Size: 27.35 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:
bc909e13a898a7c04bd5c33e510e5f36
SHA1:
6c366c3bf953d864c3ba6f811be374ada3582b2c
SHA-256:
51967de5245f8fc76b5f5b184804c21c23634243c984c13b40a294c39ae20011
File Format: A GnuPG file which contains a cryptographic signature
File Name: MX840c_BIOS_M63NN_LN_2.5.4.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:
6f735cfc884bc51d3ed703b414958bf9
SHA1:
c851c55583e8e594e0ba97048a2d3beaac47d246
SHA-256:
802af2f8cd4b7685731fbdd8aee9336e4813d8b665a70c53f2d6c7780fa5a541
File Format: A self-extracting file for use in 64-bit machines
File Name: MX840c-020504.efi
File Size: 19.3 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:
f54547b982260128ba7cf59364e3d7d1
SHA1:
34773567d794463991e12b809bde445c1c2a5bea
SHA-256:
5bc78a6f708f35f907ee93010e0ee9a482e0e5db9c9959db5872d09fef2785e3
File Format: An archive of PDF files to provide help and procedural information to the customers
File Name: MX840c_BIOS.2.5.4_RN.pdf
File Size: 178.7 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:
7c311a04a27362d4efa00fdc3f485153
SHA1:
1a0b8bf844bc3c95e2b792c76476668fa978030f
SHA-256:
0e349385cbdf4db6a15ddee807cf9540d6f0f6df0bfcbe8086afa53364a73e84
File Format: Update Package for Red Hat Linux
File Name: MX840c_BIOS_M63NN_LN_2.5.4.BIN
File Size: 28.68 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.
To ensure the integrity of your download, please verify the checksum value.
MD5:
48ded04e0e75151ce3a6ad520f347c66
SHA1:
0e056ca5e9f8f547f36f674287e29a00e3aee031
SHA-256:
018b69d3886487fdae4e82335164be4f94cb1767a632f739b977d1af479e9acf

By downloading, you accept the terms of the Dell Software License Agreement.

Additional details

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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 metho--iDRAC GUI or RACADM CLI command.
- Physically reduce the memory capacity by removing a few DIMMs (and thus improve the speed of the BIOS update process), and then try again.
PowerEdge BIOS
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.
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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.
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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.

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