Driver Details

Optiplex 990 System BIOS

OptiPlex 990 System BIOS

Fixes & Enhancements

1.Addressed F12 administrator boot options issue.


Version A16, A16



Release date

15 Oct 2012

Last Updated

21 Mar 2014


Available formats

File Format:Non-Packaged
File Name:O990-A16.exe
Download Type:HTTP
File Size: 5 MB
Format 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.
To ensure the integrity of your download, please verify the checksum value.

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

Applies to
Dell Optiplex 990
Installation instructions
Installation Instructions for the Universal (Windows/ DOS) format
Download file to Desktop
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)
Important Information
Please note that if the A04 or before A04 BIOS is currently installed on your system
you must first update to A05 BIOS and then flash to the latest A-rev BIOS.

Please note that if the A05 or after A05 BIOS and before A10 is currently installed on your system
you must first update to A10 BIOS and then flash to the latest A-rev BIOS.
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Drivers help and tutorials

Warning: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart and you will briefly see a black screen.

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Learn more

This driver has been tested by both the independent software vendor (ISV) and Dell on the operating systems, graphics cards, and application supported by your device to ensure maximum compatibility and performance. Details

Dell recommends applying this update during your next scheduled update cycle. The update contains feature enhancements or changes that will help keep your system software current and compatible with other system modules (firmware, BIOS, drivers and software).