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
This package contains the Dell system BIOS update. 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 advisories INTEL-SA-00233 and INTEL-SA-00213. 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 Precision 5820 Tower, go to Drivers and downloads.
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File Format: CPG BIOS Executable for Windows/DOS
File Name: 5820T_1.11.1.exe
File Size: 16.94 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.

Fixes & Enhancements

-Firmware updates to address security advisories INTEL-SA-00233(CVE-2018-12126,CVE-2018-12127,CVE-2018-12130 and CVE-2019-11091)
-Firmware updates to address security advisory INTEL-SA-00213 (CVE-2019-0086,CVE-2019-0091,CVE-2019-0092, CVE-2019-0093,CVE-2019-0094 and CVE-2019-0096)
-Removed the preboot Intel RST Manager Optimized Defaults option.

-Supports Nuvoton NPCT750 TPM FW version
Read More


1.11.1, 1.11.1

Release date

03 Jun. 2019

Download Type

System BIOS




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

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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
2.10.030 Aug. 2021
2.8.001 Jul. 2021
2.4.001 Jul. 2021
2.5.001 Jul. 2021
1.13.021 Oct. 2019
1.12.102 Oct. 2019
1.10.607 May 2019
1.10.419 Mar. 2019
1.8.330 Oct. 2018
1.8.205 Oct. 2018
1.7.114 Aug. 2018
1.6.211 Jul. 2018
1.5.626 Jun. 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 it 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
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.

Need help with BIOS issues?

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

Drivers help and tutorials