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: 3521A12.exe
File size: 4.49 MB
To ensure the integrity of your download, please verify the checksum value.
MD5: 8119f49951c50e49049bde59b5156ca6
SHA1: 5635214a814e794f98ba258ef0aab149f74e6c32
SHA-256: 54254dfdc9ec83c5a866eddd7a944cf00fe99efd01a2e865659e2a3fb95f55d4
Fixes & Enhancements
Fixes
- Not Applicable
Enhancements
- Enhanced Diagnostics function
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 if Legacy Boot Mode(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. After BIOS update finished, system will auto reboot to take effect.
[Run the BIOS update utility from DOS environment if UEFI Boot Mode (Non-Windows users,Load Legacy Option ROM Disabled)]
1.Copy the downloaded file to a bootable DOS USB key.
2. Power on the system, then go to BIOS Setup by pressing F2 and go to "Boot > Boot List Option"
3. Change "UEFI" to "Legacy" of Boot List Option
4. Go to "Exit > Exit Save Changes" and reboot system.
5. Press F12, then Select "USB Storage Device" and Boot to DOS prompt.
6. Run the file by typing copied file name where the executable is located.
7. After BIOS update finished, system will auto reboot.
8. Go to BIOS Setup by pressing pressing F2 and go to "Boot > Boot List Option"
9. Change "Legacy" to "UEFI" Boot Option.
10. Go to "Exit" > Exit Save Changes and reboot system
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Note 1: You will nedd 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 canignore it.
Reboot will be required
Applies to
Dell Inspiron 5521/5721/3521/3721 and Vostro 2521