Download Files
File Format: Dell Update Packages (DUP) in Microsoft Windows 32bit format have been designed to run on Microsoft Windows 64bit Operating Systems. Dell Update Packages (DUP) in Microsoft Windows 64bit format will only run on Microsoft Windows 64bit Operating Systems. When selecting a device driver update be sure to select the one that is appropriate for your operating system.
File Name: T420_BIOS_DXCMV_WN32_1.5.1.EXE
File size: 11.65 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: aba0da216333821b39234568d3b57190
SHA1: d2a6b6c692798ce12e7bc093b528d891258bc200
SHA-256: ce141a7fb4765580b066a0b10ce30cdfc184c8652965b9e90b786733a46b95b7
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: T420_BIOS_DXCMV_LN_1.5.1.BIN.sign
File size: 189 Bytes
To ensure the integrity of your download, please verify the checksum value.
MD5: d1d6ae5f7ff8858b5dcdb3eb4e925672
SHA1: 40e3bb65bd44cae03f263cc5fc580194a5f2e6a2
SHA-256: 7ae04e3c52a1f46f60ce92552b392a6c0bcc02c380632c93256a7a973421c01c
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: T420-010501C.efi
File size: 8.08 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: eb88179fe8c8f92279c5b935109f67e2
SHA1: ee542a180c7dccff907a081513c3d31f73cd9d2b
SHA-256: 201735e8f209dd7cf7682ae4b051f11ba7b2f32b5a0ba30993df1ad531f9f5a4
File Format: This file format consists of a BIOS-executable file. To use it, download the file and copy it to a DOS-bootable USB flash drive, then boot the system to the USB flash drive and run the program.
File Name: T420-010501C.exe
File size: 3.01 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 543dca1692349df4dc5a366c18fa421a
SHA1: bd5fe189c256117baa72df1a5c00d49dadcd7281
SHA-256: 0ad89b011b53bb14453cb42c6539e1fca534528e4ffd13a793d0fcacf635b466
File Format: This file format contains plain text which can be viewed with a standard text editor.
File Name: T420-010501BIOS.txt
File size: 8.6 KB
To ensure the integrity of your download, please verify the checksum value.
MD5: a992d7a6f54718c08f1cea7576877bfe
SHA1: ba6d76e3e1c6ee41b01208c57c560ddc51ee2c95
SHA-256: 271bbc2e49c9cbf3537b959c401d594b486cc2a235cc4c55056356ee4f198c2a
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.<br /><b>Note:</b> Update Packages for Linux are open source. See the Dell Update Packages for Linux Readme for details.
File Name: T420_BIOS_DXCMV_LN_1.5.1.BIN
File size: 9.95 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: a0df097179a138b7f06e6d8578f7b7cb
SHA1: ffbd83692ab1760068b221ef452a653e4686aeec
SHA-256: 76cf837adb0a1be90d481a256e3ba8350d49736ea3c112b36b4ff7b697c8677e
Fixes & Enhancements
Allows Memory 2X Refresh operation independent of temperature. This option is accessible through the System Profile Settings menu under the BIOS setup.
Important Information
None
Supported Operating Systems
Installation instructions
Dell Update Package Instructions for DRMK
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
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 Now" linkto 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 bythe flash utility.
----------------------------------------------------------------------
Dell 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 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 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 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
Reboot will be required