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: E6420A08.exe
File size: 5.79 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 17192d4f8b4e2c57c239264851cac55d
Fixes & Enhancements
Fixes/Enhancements
------------------
1. Fixed issue where Intel Turbo boost non-functional.
2. Fixed issue where TDM PBA SSO doesn't work when both FP and TDM PBA SSO are set for single user.
3. Addressed some keyboard with USB Hub not accessible during POST.
4. Updated to the 1.4.0 version of Intel PPM Reference Code.
5. Updated to the MOB_P_13 version of the Intel microcode patch.
6. Intel Trusted Execution Technology updates
7. Updated to the 1.05 version of Dell GPE.
8. Added new key for Signed Firmware Updates.
Note:
1. Please note that if the A04 or before A04 BIOS is currently installed on your system,
you must first update to A05 BIOS and then flash to the latest A-rev BIOS.
Important Information
Note:
1. Please note that if the A04 or before A04 BIOS is currently installed on your system
you must first update to A05 BIOS and then flash to the latest A-rev BIOS.
Supported Operating Systems
Installation instructions
BIOS Update Executable for Windows/DOS
Download
1. Click Download File, to download the file.
2. When the File Download window appears, click Save to save the file to your hard drive.
Run the BIOS update utility from Windows environment
1. Browse to the location where you downloaded the file and double-click the new file.
2. Windows System will auto restart and update BIOS while system startup screen.
3. After BIOS update finished, system will auto reboot to take effect.
Run the BIOS update utility from DOS environment (Non-Windows users)
1. Copy the downloaded file to a bootable DOS USB key.
2. Power on the system, then Press F12 key and Select "USB Storage Device" and Boot to DOS prompt.
3. Run the file by typing copied file name where the executable is located.
4. DOS System will auto restart and update BIOS while system startup screen.
5. After BIOS update finished, system will auto reboot to take effect.
--------------------------------------------------------------------------------
Note 1: You will need to provide a bootable DOS USB key. This executable file does not create the DOS system files.
Note 2: Please make sure you suspend BitLocker encryption before updating BIOS on a BitLocker enabled system.
If you don't enable BitLocker on your system you can ignore it.
Reboot will be required
Applies to
Dell Latitude E6420/E6420