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 5290/5490/5590 System BIOS

Restart required AUTO 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 Intel Turbo Boost Technology is disabled by default on certain processors.
- Fixed the issue where an incorrect processor speed is displayed in the Setup menu.
- Fixed the issue where the Dell Dock WD15 loses power after it is connected to a system running on low battery.
- Fixed the issue where the system shows a warning message, Slow USB Charger Connected, when connected to a Dell Dock WD15.

Enhancement:
- Updated the Embedded Controller Engine Firmware.
- Updated the Thermal Algorithm for performance.
Read More

Version

1.5.0, 1.5.0

Release date

26 Sep 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: CPG BIOS Executable for Windows/DOS
File Name: Latitude_5X90_1.5.0.exe
File Size: 9.95 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:
c8ac48be6f604131cb1381324c446fca
SHA1:
c99902049507b0d43c735344106919162e94fa16
SHA-256:
cf586d6e3db98f242025e4ed691e6859f8f6a68bbf095cbc9374cbc38709c30b
File Format: External release notes
File Name: Latitude_5X90_1.5.0.txt
File Size: 6.7 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:
b1908553b9da3f6ae455dcdfc59e8b17
SHA1:
c74effca44cdf131ab5f6d468ba3d705f2cc080a
SHA-256:
a7c78514fe0bba4ef619e711159e847414e77b644d0992faf2663f3e9023357e

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 a version before 1.2.3. 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 5290;Latitude 5490;Latitude 5590
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 and usage guide.

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