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 Precision 5820 Tower and Precision 5820 Tower X-Series System BIOS
Restart requiredAUTO INSTALLEDThis file was automatically installed as part of a recent update. If you are experiencing any issues, you can manually download and reinstall.
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. BIOS is a firmware package 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 Common Vulnerabilities and Exposures (CVE). Common Vulnerabilities and Exposures (CVE) is a list of security vulnerabilities and exposures that are publicly disclosed.
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Fixes & Enhancements
- Firmware updates to address security vulnerabilities. - Firmware updates to address security vulnerabilities including (Common Vulnerabilities and Exposures - CVE) such as CVE-2022-21181, CVE-2022-0004, CVE-2021-21131, CVE-2021-21136, and CVE-2022-21166.
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.
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.
- BIOS updates take no more than 5 minutes to be installed on your system. You can install the updates in the background while using the system. - During the BIOS update, the system reboots automatically, and a black screen is displayed. The power button LED turns solid white. - Do not turn off the system or interrupt the BIOS update process.
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. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com. Note 2: Do not turn off power or interrupt the BIOS update process during the update. Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.
Download and Installation 1. Click Download File. 2. Click Save to save the file to your hard drive. 3. Browse to the location where you downloaded the file. 4. Double-click the new file. 5. 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 BIOS Boot Menu (independent of operating system)
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. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com. Note 2: Do not turn off the power or interrupt the BIOS update process during the update. Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.
Installation 1. Copy the downloaded file to a USB drive. You do not need a bootable USB drive. 2. Insert the USB drive into any USB port. 3. Power on the system. 4. At the DELL logo screen, press F12 to access the one-time boot menu. 5. Select BIOS Flash Update in the Other Options section. 6. Click the ... button to browse the USB drive to locate the downloaded file. 7. Select the file and click OK. 8. Verify the existing system BIOS information and the BIOS update information. 9. Click Begin Flash Update. 10. Review the Warning message and click Yes to proceed with the update. The system restarts and displays a Flash Progress bar at the Dell logo screen. The system restarts again when the Flash update is complete.
Need help with BIOS issues?
Find a solution in Dell's BIOS troubleshooting and usage guide.