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 3540 and Latitude 5400/5500 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. 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.
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Fixes & Enhancements

Fixes:
- Fixed the issue where the BIOS Auto-Recovery function does not work when Secure Boot mode is enabled.
- Fixed the issue where the BIOS Auto-Recovery option does not work with Intel Optane Memory H10.
- Fixed the issue where the IPV4, IPV6, and USB boot options do not appear in the boot menu when connected to USB Type-C Device. This issue occurs when the Secure Boot option is enabled.

Enhancements:
- Updated the Intel Management Engine firmware.
- Updated the Embedded Controller Engine firmware.
Read More

Version

1.1.8, 1.1.8

Release date

13 May 2019

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_5X00_Precision_3540_1.1.8.exe
File Size: 14.57 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:
5ae1a9648e641547be5b1ada89e1ae59
SHA1:
6e215de650a1f0f4913e486ad205b49c33bed162
SHA-256:
948e7a2d445a1bfc0960e363c6d254eeff261eb531f4edbb80b0c7c5c497f18a
File Format: External release notes
File Name: Latitude_5X00_Precision_3540_1.1.8.txt
File Size: 1.36 KB
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:
280b535973506a79b4ccd2040b855e89
SHA1:
ca2eaa95bb0192475612e1b98d58e51918c9a795
SHA-256:
63bf7116b4ab95ea0d898107463b89d5dbc446f884d77fed2afa739eace946e8

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 the BIOS EXE/ Recovery (RCV) to versions before 1.0.1. BIOS downgrades are restricted when there are security updates and important fixes with earlier versions that impact the functionality of the system.
- 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.
Latitude 5400;Latitude 5500;Precision 3540
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.

Need help with BIOS issues?

Find a solution in Dell's BIOS troubleshooting guide

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