Download Files
File Format: This file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from any Windows or MS DOS environment.
File Name: E6420A17.exe
File size: 5.87 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: ea0803d470368168131efb00414965e2
SHA1: 83407dc0c8683a2ce89a030761fa8184c9c1f5bd
SHA-256: 10337b57ff82bdee36b5ae1330f3834373a5c8fd13b3f16ea4416865e21ebfdf
Fixes & Enhancements
- Updated the Enhanced Pre-Boot System Assessment (ePSA) diagnostics to version 4220.11.
- Updated the Intel Management Engine (ME) Firmware to version 7.1.70.1198.
Important Information
- If your system BIOS version is A04 or earlier, you must install the BIOS version A05 before installing the latest BIOS version.
- If your system BIOS version is A05 or a version earlier than A08, you must install the BIOS version A08 before installing the latest BIOS version.
Supported Operating Systems
Installation instructions
Updating the BIOS from Windows
Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com.
Note 2: Do not turn off power or interrupt the BIOS update process during the update.
Download and Installation
1. Click Download File.
2. Click Save to save the file to your hard drive.
3. Browse to the location where you downloaded the file.
4. Double-click the new file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.
Updating the BIOS from DOS (Non-Windows users)
Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com.
Note 2: Do not turn off power or interrupt the BIOS update process during the update.
Installation
Note: You must provide a bootable USB drive. This executable file does not create the DOS system files.
1. Copy the downloaded file to a bootable USB drive.
2. Power on the system and then Press the F12 key.
3. Select USB Storage Device and boot to the DOS prompt.
4. Run the file by typing following command. For example:
C:\ Latitude_E6420_ATG_X.Y.Z.exe
Where C is the drive letter of the USB device where the executable file is located and Latitude_E6420_ATG_X.Y.Z.exe is the name of the downloaded file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.
Applies to
Dell Latitude E6420/E6420