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: E5520A12.exe
File size: 2.9 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 4adf58cf8c050f59142cf692874e6c70
SHA1: 6b4331c0e35321825d2ab3f66be14a1fdd06df72
SHA-256: 49e99708c1f5680f9dca9425de19eb1cbdac702fb3da1b0dcf1a7612aa01edd5
Fixes & Enhancements
1. Updated to the 4220.11 version of ePSA diagnostics.
2. Updated to the 7.1.70.1198 version of the Intel MEFW
Important Information
Please note that if "Signed Firmware upadte" is enable and 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.
Supported Operating Systems
Installation instructions
Installation Instructions for the Universal (Windows/ DOS) format
1. Download file to Desktop
2. Use one of the methods below to flash the Bios.
Run the BIOS update utility from Windows environment
Run the BIOS update utility from DOS environment (Non-Windows users)
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Download file to Desktop
The file E5520A12.exe is using the Universal (Windows/ DOS) format and is designed to be directly executed from Windows environment.
1. Click Download now.The File Download window appears.
2. Click the Save button.The Save As window appears.
3. Select Desktop using the drop-down menu to the right of Save in.
4. Click the Save button.A progress meter moves as the download is completed.
5. 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
1. Double click the Icon on your desktop labeled E5520A12.exe.The Dell BIOS Flash window appears
2. Click the Continue button.The message Pressing OK will close all applications, shut down Windows, Flash the BIOS, then reboot. appears.
3. 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 DOS USB key. This executable file does not create the DOS system files.
1. Copy the file E5520A12.exe to a bootable DOS USB key.
2. Boot from the floppy to the DOS prompt.
3. Run the file by typing Y:\E5520A12.exe (where y is the drive letter where the executable is located).
Reboot will be required