Dell Support Drivers & Downloads Driver File Formats

Driver Details

Dell OptiPlex System BIOS, Dimension System BIOS, A12
Dimension Cxxx/Optiplex GC/Dimension 900 A12 FlashBIOS
Release Date 6/5/2001
Importance: Optional
Version: A12

The following formats are available for the file you have selected

File Format: Floppy Download File Download File
File Name:


Description: This file contains a compressed (or zipped) set of files. Download the file to a folder on your hard drive, then double-click it to unzip the set of files. Follow the instructions to complete the installation.
Download Type: HTTP
File Size: 403KB

File Format: Non-Packaged Download File Download File
File Name:


Description: This file format consists of a BIOS-executable file. To use it, download the file and copy it to a DOS-bootable USB flash drive, then boot the system to the USB flash drive and run the program.
Download Type: HTTP
File Size: 555KB

Previous Versions

No previous version available.


Dimension Cxxx/Optiplex GC/Dimension 900 A12 FlashBIOS

Level of Importance:Optional

Dell recommends the customer review specifics about the update to determine if it applies to your system. The update contains changes that impact only certain configurations, or provides new features that may/may not apply to your environment.


Dimension C___ (Japan Only)
OptiPlex GC
Operating Systems

Applies to

  • Dell Device
  • Dimension System BIOS
  • OptiPlex System BIOS

Fixes & Enhancements

1. Fixed problem where some systems would get a "CPU BIOS Update Code Mismatch" error after updating to BIOS revision A09, A10, or A11. To fix this, microcode to support older CPUs that was mistakenly removed between A08 and A09 was readded.

Installation instructions

After downloading, execute this program from your WINDOWS system.

It will create a 'bootable' diskette that contains the BIOS update.

Boot the diskette, and the system will prompt the user for any required input while performing the BIOS update process.            


To ensure the integrity of your download, please verify the checksum value.

This is an optional process and is not required for the downloading and installation of device drivers from this site.
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