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 provides the Dell System BIOS update and is supported on Dell Latitude 5491/5591 and Precision 3530 for Windows Operating Systems.
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Fixes & Enhancements

Fixes:
N/A

Enhancement:
1. Improve Embedded Controller Engine Firmware
2. Improve Intel BIOS Guard and Boot Guard.
3. Improve BIOS recovery process
4. Improve XHCI interface device.
Read More

Version

1.1.6, 1.1.6

Release date

21 May 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 View Important Information
File Format: Flash BIOS executable
File Name: Latitude_5X91_Precision_3530_1.1.6.exe
File Size: 10.75 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. To use it, download the file and copy it to a DOS-bootable USB flash drive, then boot the system to the USB flash drive and run the program.
To ensure the integrity of your download, please verify the checksum value.
MD5:
bbbf11adf99ccdb2f3647034bfd2d4c8
SHA1:
e5a31645eea50381a492a10f53b4a4cd9f32866b
SHA-256:
f5b920de2682eab67704e93951427c9ca3498ba890176841f969f7fb02f5376d
File Format: External release notes
File Name: Latitude_5X91_Precision_3530_1.1.6.txt
File Size: 898 Bytes
This is a large file. Depending on your connection speed, it may take some time to download.
Format Description:
This file format contains plain text which can be viewed with a standard text editor.
To ensure the integrity of your download, please verify the checksum value.
MD5:
f95ac651b2aff8bb2bbe5df13416e511
SHA1:
f1c767e956039c52b9b40f8a29c307d6c55ff8e6
SHA-256:
e24b5254acbdc4fbf4dff2816bba964e0e8d4be57a74899561549ad690731a95

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

Additional details

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Important:
- Not allowed to downgrade BIOS EXE / Recovery (RCV) due to Intel security update.
Latitude 5491, 5591, Precision 3530
BIOS Update Executable for Windows

Download
1. Click Download File to download the file.
2. When the File Download window appears, click Save to save the file to your internal storage.

Run the BIOS update utility from Windows environment
1. Browse to the location where you downloaded the file and double-click the new file.
2. Windows System will auto restart and update BIOS while system startup screen.
3. After BIOS update finished, system will auto reboot to take effect.

Note : Please make sure you suspend BitLocker encryption before updating BIOS on a BitLocker enabled system.
If you don't enable BitLocker on your system you can ignore it.

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting guide

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