Driver Details

Latitude E5420 System BIOS

Latitude E5420 Sytem BIOS

Fixes & Enhancements

BIOS Release Notes
Systems: Dell Latitude E4520 Series
Version: A09
Release Date: 07/12/2012
Fixes/Enhancements
------------------
1. Addressed some hard drives detection issue.
2. Added to support a new Bluetooth device.
3. Updated to the 7.1.52.1176 version of the Intel MEFW.
4. Updated to the MOB_P_21 version of the Intel microcode patch.
5. Address the serial device not recognized issue.

Note:
1. Please note that if the A01 or before A01 BIOS is currently installed on your system,
you must first update to A02 BIOS and then flash to the latest A-rev BIOS.

The BIOS release has been validated on the following operating systems:
1. Microsoft Windows 7
2. Microsoft Windows Vista Service Pack 2
3. Microsoft Windows XP Service Pack 3

Version

Version A09, A09

Release date

11 Sep 2012

Last Updated

11 Sep 2012

Importance

Recommended

Available formats

File Format:Windows/DOS
File Name:E5420A09.exe
Download Type:HTTP
File Size: 2MB
Format DescriptionThis file format consists of a BIOS executable file. The Universal (Windows/MS DOS) format can be used to install from Windows 8, Windows 7, Windows XP, Windows 2000, NT, Windows 9X, Windows ME or a MS DOS environment.
Added to download list
Go to [{0}]
To ensure the integrity of your download, please verify the checksum value.
MD5:
a97718b210e05bb864dbbe017171cf30
SHA1:
5189f201ae170f23bc76a4e3c3ca57458afa5107
SHA-256:
5ff745c53abfcf882928d596c82bfcb5f2c652087d2a0ef38a7136207826ec74

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

Compatible Systems

Supported Operating Systems

BIOS

Applies to

Dell Latitude E5420

Installation instructions

Download file to Desktop

The file E5420A09.EXE is using the Universal (Windows/ DOS) format and is designed to be directly executed from Windows environment.


Click Download now.The File Download window appears.

Click the Save button.The Save As window appears.

Select Desktop using the drop-down menu to the right of Save in.

Click the Save button.A progress meter moves as the download is completed.

If necessary, click X in the upper right-hand corner of the Download Progress Window to close it upon completion.

NOTE: Shut down all other applications prior to running the BIOS update utility. The update utility reboots your system in order to get the new BIOS loaded.

--------------------------------------------------------------------------------
Run the BIOS update utility from Windows environment


Double click the Icon on your desktop labeled E5420A09.EXE.The Dell BIOS Flash window appears

Click the Continue button.The message Pressing OK will close all applications, shut down Windows, Flash the BIOS, then reboot. appears.

Click the OK button.The system will restart and the BIOS Flash will be completed.


Run the BIOS update utility from DOS environment (Non-Windows users)
NOTE: You will need to provide a bootable DOS diskette. This executable file does not create the DOS system files.

Copy the file E5420A09.EXE to a bootable floppy.

Boot from the floppy to the DOS prompt.

Run the file by typing Y:\E5420A09.EXE (where y is the drive letter where the executable is located).

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This driver has been tested by both the independent software vendor (ISV) and Dell on the operating systems, graphics cards, and application supported by your device to ensure maximum compatibility and performance. Details
Dell recommends applying this update during your next scheduled update cycle. The update contains feature enhancements or changes that will help keep your system software current and compatible with other system modules (firmware, BIOS, drivers and software).