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 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. 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.
To view all drivers for your 5820 XL Tower, go to Drivers and downloads.
Recommended
Loading the latest available version of the driver...

This is the latest Dell validated version of this driver

This is not the latest Dell validated version of this driver

5820T_2.10.0.exe | 21.05 MB
This is a large file. Depending on your connection speed, it may take some time to download.
Download Go to Latest Version
Show details | Download current version instead | View Important Information
File Format: CPG BIOS Executable for Windows/DOS
File Name: 5820T_2.10.0.exe
File Size: 21.05 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:
bbef53acd782ec40a95c74dd7f8c2eee
SHA1:
2b6660ea774e9201a6943b3c3d195e97dd57b635
SHA-256:
0b38cc1ea30d182dcf0207255a2f40c3549accaf9efd42094f98d78304224835

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

Fixes & Enhancements

- Fixed the issue where the customized logo and product name are removed when you upgrade the BIOS and change the BIOS to its default settings.
- Firmware updates to address security vulnerabilities.
Read More

Version

2.10.0, 2.10.0

Release date

30 Aug 2021

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
- Once the BIOS is upgraded, you cannot downgrade the BIOS EXE/Recovery (RCV) to versions earlier than 2.0 due to restrictions. BIOS downgrades are restricted when there are security updates and important fixes with earlier versions that impact the functionality of the system.
- During the BIOS update, the system reboots automatically, a black screen is displayed, and the power button LED turns solid white. Do not turn off the system or interrupt the BIOS update process.
- 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.
2.37.009 Jul 2024
2.36.010 May 2024
2.35.008 Apr 2024
2.34.002 Feb 2024
2.31.008 Aug 2023
2.30.021 Jun 2023
2.29.130 May 2023
2.27.011 Apr 2023
2.26.014 Mar 2023
2.25.009 Jan 2023
2.24.013 Dec 2022
2.19.123 May 2022
2.16.112 Apr 2022
2.14.012 Jan 2022
2.13.128 Dec 2021
2.12.115 Nov 2021
2.8.001 Jul 2021
2.4.001 Jul 2021
2.5.001 Jul 2021
2.0.220 Jan 2020
1.11.103 Jun 2019
1.10.419 Mar 2019
1.8.205 Oct 2018
1.7.114 Aug 2018
1.6.211 Jul 2018
1.4.020 Mar 2018
1.3.221 Feb 2018
Dell Precision 5820XLT BIOS
Dell Precision T5820 BIOS
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. 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.

Drivers help and tutorials