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 Precision 5820 Tower, Precision 5820 Tower X-Series BIOS

Restart required 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 for Dell Precision 5820 Tower and Precision 5820 Tower X-Series systems that run the Windows 10 operating system. BIOS is a firmware that is embedded on a small memory chip on the computer's system board. It controls the keyboard, monitor, disk drives and other devices. This update optimizes the SATA equalization.
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Fixes & Enhancements

Enhancement:
Adjusted Diagnostic LED blink code to better reflect system status when error occur. This change should not affect any normal operation.
Read More

Version

1.8.3, 1.8.3

Release date

30 Oct 2018

Download Type

System BIOS

Category

BIOS

Importance

Recommended
Dell Technologies recommends applying this update during your next scheduled update cycle. The update contains changes to maintain overall system health. It ensures that the system software remains current and compatible with other system modules (firmware, BIOS, drivers, and software) and may include other new features.
Available formats
File Format: CPG BIOS Executable for Windows/DOS
File Name: 5820T_1.8.3.exe
File Size: 16.61 MB
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.
To ensure the integrity of your download, please verify the checksum value.
MD5:
260fe623bbcb81830f965d67e22af0a1
SHA1:
4e06e6a8ad1fc2873431a5a453e633c32728c9a8
SHA-256:
a7739e1a8e306afdbf61b19da23f83bfc8a1005f704a269401b062eafea8c1ee

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

Additional details

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Dell Precision 5820XLT BIOS
Dell Precision T5820 BIOS
Updating the BIOS through Windows
1. Click Download File to download the file.
2. When the File Download window is displayed, 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 automatically restarts and updates BIOS during the system startup screen. After BIOS update is complete, the system reboots again.

Updating the BIOS from the BIOS Boot Menu (independent of operating system)
Ensure that you suspend BitLocker encryption before updating BIOS on a BitLocker enabled system. If you do not enable BitLocker on your system, you can ignore it.
1. Copy the downloaded file to a USB drive. The USB drive does not need to be bootable device.
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. Confirm the Existing System BIOS Information and the BIOS Update Information are as expected.
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 on the Dell logo screen as the BIOS update is being performed. The system restarts again when the Flash update is complete.

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting guide

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