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 OptiPlex 3020 System BIOS

Restart required AUTO INSTALLED This file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
This package contains the Dell System BIOS update. It is supported on Dell OptiPlex 3020 system that runs the Windows and DOS operating systems. BIOS is a firmware that is embedded on a small memory chip on the system board. It controls the keyboard, monitor, disk drives, and other devices. This update addresses the Intel security advisory INTEL-SA-00233. A security advisory is a statement when a product is impacted by a security vulnerability and a remedy is available.
To view all drivers for your OptiPlex 3020, go to Drivers and downloads.
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O3020A20.exe | 4.77 MB
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File Format: CPG BIOS Executable for Windows/DOS
File Name: O3020A20.exe
File Size: 4.77 MB
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:
d7bafe87a8469d43b30a5c2dca05d3e1
SHA1:
6f0421db170b05f0403f77c9fe150c66e4973a1c
SHA-256:
484e61087b8d38b8ab1dd898ac8e785b3f9c90a50137125ff441b4c152aa6b1e

Find more updates. Use SupportAssist to find all the latest driver updates for your device.

Fixes & Enhancements

Fixes:
- Firmware updates to address security advisories INTEL-SA-00233(CVE-2018-12126, CVE-2018-12127, CVE-2018-12130 and CVE-2019-11091)

Enhancements:
- Not applicable
Read More

Version

A20, A20

Release date

19 Jun 2019

Download Type

System BIOS

Category

BIOS

Importance

Critical
Dell Technologies highly recommends applying this important update as soon as possible. The update contains critical bug fixes and changes to improve functionality, reliability, and stability of your Dell system. It may also include security fixes and other feature enhancements.

Additional details

Show All | Hide All
If you are using Windows 7 operating system, it is recommended that you install Microsoft KB931125 to prevent invalid digital sign.
A1915 Nov 2018
A1821 Jun 2018
A1727 Feb 2018
A1506 Mar 2017
A1422 Nov 2016
A1331 Aug 2016
A1204 Aug 2016
A1001 Feb 2016
A0906 Oct 2015
A0806 Aug 2015
A0731 Mar 2015
A0628 Jan 2015
A0522 Oct 2014
A0318 Apr 2014
A0224 Feb 2014
A0019 Nov 2013
Dell Optiplex 3020
Updating the BIOS from Windows

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step.
Note 2: Do not turn off the power or interrupt the BIOS update process during the update.

Download and Installation
1. Click Download File, to download the file.
2. Click Save to save the file to your hard drive.
3. Browse to the location where you downloaded the file and double-click the new file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.

Updating the BIOS from DOS (Non-Windows users)

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step.
Note 2: Do not turn off power or interrupt the BIOS update process during the update.

Installation
Note: You must provide a bootable USB drive. This executable file does not create the DOS system files.
1. Copy the downloaded file to a bootable USB drive.
2. Power on the system and then Press the F12 key.
3. Select USB Storage Device and boot to the DOS prompt.
4. Run the file by typing following command. For example:
C:\ OptiPlex_3020_X.Y.Z.exe
Where C is the drive letter of the USB device where the executable file is located and OptiPlex_3020_X.Y.Z.exe is the name of the downloaded file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.

Updating the BIOS from DOS with UEFI boot mode enabled (Non-Windows users, Load Legacy Option Disabled)

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step.
Note 2: Do not turn off the power or interrupt the BIOS update process during the update.

Installation
1. Copy the downloaded file to a bootable DOS USB drive.
2. Power on the system and then go to BIOS Setup by pressing the F2 key.
3. Go to General > Boot Sequence > Boot > Boot List Option.
4. Change UEFI to Legacy of Boot List Option.
5. Go to Exit > Save Changes and reboot system.
6. Press F12 and then select USB Storage Device and boot to the DOS prompt.
7. Run the file by typing the file name.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, the system restarts again.
8. Go to BIOS Setup by pressing the F2 key and go to General > Boot Sequence > Boot > Boot List Option.
9. Change Legacy to UEFI Boot Option.
10. Go to Exit > Save Changes and reboot the system.

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting and usage guide.

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