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.
Latitude E5520 System BIOS
AUTO INSTALLED This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.Latitude E5520 System BIOS A09
To view all drivers for your Latitude E5520, go to Drivers and downloads.
Recommended
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E5520A09.exe | 2.87 MBEnter the Service Tag of your device to check the compatibility of this download with your device.
This is a large file. Depending on your connection speed, it may take some time to download.
File Format:
CPG BIOS Executable for Windows/DOS
File Name:
E5520A09.exe
File Size:
2.87 MB
Format Description
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.
To ensure the integrity of your download, please verify the checksum value.
MD5:
9a4a7828deb4d3027164b624f86cce3e
SHA1:
04feee7ca4cda8f240466c1d8c62a68021d8e07d
SHA-256:
d626b6a7785a1163aa259ed2b73212b7c4c307566f26aeb10b406e83a18a573a
Sign in to Windows as an admin to use automatic scan. If your're already signed in as an admin and seeing this message, please reboot.
Your system is managed by your IT admin and features might be limited.
Find more updates. Use SupportAssist to find all the latest driver updates for your device.
Fixes & Enhancements
BIOS Release Notes
Systems: Dell Latitude E5520 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
Read More
Systems: Dell Latitude E5520 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
A09, A09
Release date
29 Aug 2012
Download Type
System BIOS
Category
BIOS
Importance
RecommendedDell 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.
Supported Operating Systems
BIOS
Looking for a different OS? View the list of Dell supported operating systems
Applies to
Dell Latitude E5520
Installation instructions
Download file to Desktop
The file E5520A09.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.
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Run the BIOS update utility from Windows environment
Double click the Icon on your desktop labeled E5520A09.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 E5520A09.EXE to a bootable floppy.
Boot from the floppy to the DOS prompt.
Run the file by typing Y:\E5520A09.EXE (where y is the drive letter where the executable is located).
The file E5520A09.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 E5520A09.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 E5520A09.EXE to a bootable floppy.
Boot from the floppy to the DOS prompt.
Run the file by typing Y:\E5520A09.EXE (where y is the drive letter where the executable is located).
Need help with BIOS issues?
Find a solution in Dell's BIOS troubleshooting and usage guide.Drivers help and tutorials
For more downloads go to the Drivers and downloads.
For help on using the information on this page, please visit Driver Help and Tutorials.