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.

Dell Inspiron 5521 System BIOS

Restart required Installed This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
Dell Inspiron 5521 System BIOS
Recommended

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Fixes & Enhancements

Fixes
- Not Applicable
Enhancements
- Enhance ROM based Diagnostic tool.
Read More

Version

A09

Release date

15 Aug 2013

Download Type

System BIOS

Category

BIOS

Importance

Recommended
Dell 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.
Available formats
File Format: CPG BIOS Executable for Windows/DOS
File Name: 5521A09.exe
File Size: 4.48 MB
This is a large file. Depending on your connection speed, it may take some time to download.
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:
1eab6b09e6d262c14a4723b448ac6be0
SHA1:
d6e0cf005192ae17ebba453b5259bf82b272110d
SHA-256:
0420791a92d17cb52bfff5916773d543fef2944347bfc383e7fc3df84d61b5f7

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

Additional details

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Dell Inspiron 5521/5721/3521/3721 and Vostro 2521
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)
NOTE: You will need to provide a bootable DOS USB key. This executable file does not create the DOS system files.
1. Copy the downloaded file to a bootable DOS USB key.
2. Boot from the USB key to the DOS prompt.
3. Run the file by typing copied file name where the executable is located.

Reboot will be required

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting guide

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