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 Latitude 5491, 5591 and Precision 3530 System 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. It is supported on Dell Latitude 5491, 5591 and Precision 3530 systems that run Windows operating system. 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-00213 and INTEL-SA-00233. The security advisory is an official statement when a product is impacted by a security vulnerability and a remedy is available.
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Fixes & Enhancements

Fixes:
- Firmware updates to address security advisory INTEL-SA-00213 (CVE-2019-0090, CVE-2019-0086, CVE-2019-0091, CVE-2019-0092, CVE-2019-0093, CVE-2019-0094, CVE-2019-0096, CVE-2019-0097, CVE-2019-0098, CVE-2019-0153 and CVE-2019-0170).
- Firmware updates to address security advisories INTEL-SA-00233(CVE-2018-12126, CVE-2018-12127, CVE-2018-12130 and CVE-2019-11091).
- Removed the pre-boot Intel RST Manager Optimized Defaults option.
- Fixed the issue where the boot mode setting is ineffective when it is changed from Boot Menu.
- Fixed the issue where the system does not enter sleep mode when lid is closed after updating the BIOS to version 1.7.4.

Enhancements:
- Updated the Enhanced Pre-Boot System Assessment (ePSA) firmware.
- Updated the Embedded Controller Engine firmware.
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Version

1.8.1, 1.8.1

Release date

21 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.
Available formats View Important Information
File Format: CPG BIOS Executable for Windows/DOS
File Name: Latitude_5X91_Precision_3530_1.8.1.exe
File Size: 12.09 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:
1fb64c7424ec60118a22c4db38e85e48
SHA1:
90ac2076cb974c4f3fd20b738f2db0c2bec178c8
SHA-256:
96d6d900ed97543e5e99a3f67f900294964df15176e26d868cc2d463634483ba

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

Additional details

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Once the BIOS is upgraded, you cannot downgrade BIOS EXE/ Recovery (RCV) to the versions before 1.1.6.
Latitude 5491, 5591, Precision 3530
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 file.
4. Click Yes to open the BIOS update utility.
5. Click Update to initiate the update process. A progress bar is displayed.
6. Click Restart to restart the system once the progress bar reaches 100%.
The update process initiates at the Dell logo and an update initiation message is displayed with a progress bar. After BIOS update finishes, system will auto reboot to take effect.

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting guide

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