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 5550 & Precision 3590/3591 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. This update addresses the Dell Security Advisories (DSA). A security advisory is a statement when a security vulnerability impacts a product, and a remedy is available for the vulnerability.
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Fixes & Enhancements

Fixes:
- Fixed the issue where incorrect AC Adapter wattage is displayed in the BIOS Setup when you turn on the system when a Dell dock is connected.
- Fixed the issue where there is no display on the Dell U2723QE monitor after you enable or disable the HDR function using the Dell Display Manager. This issue occurs when the monitor is connected to the system through a Type-C cable.
- Fixed the issue where the Dell logo flickers when you press the F2 key or F12 key during the Power-On Self-Test (POST).
- Fixed the issue where the Boot Sequence setting does not change when you modify it in the BIOS Setup. This issue occurs when the system is connected through the Intel Serial Over LAN.
- Fixed the issue where the Memory Channel Mode displays Single when two Dual In-Line Memory Modules (DIMMs) are connected.
- Fixed the issue where an error message is displayed when you run the Disk test in the On-board Diagnostics with the thorough mode selected.
- Fixed the issue where the red arrow key does not work when the keyboard has an AI key.
- Fixed the issue where the Dell logo is displayed after you set a custom logo.
- Fixed the issue where the Dell logo animation does not work after you set the Owner Tag during the Power-On Self-Test (POST).
- Fixed the issue where the Bluetooth device is not detected or cannot connect when you try to connect it in the boot menu.
- Fixed the issue where the 2A8W LED error code is displayed when the system enters or exit sleep mode and the graphics driver is not installed.

Enhancements:
- Improved the performance of video games on systems with Discrete GPUs.
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Version

1.1.0, 1.1.0

Release date

11 Mar 2024

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: Precision_3590_3591_Latitude_5550_1.1.0.exe
File Size: 55.25 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:
2d7cc77f86c50ddcb807920232556bfc
SHA1:
fe5f709eb2a5b63cd6e90c133fc3a0ffa1d00998
SHA-256:
9a105621f826022f11bc7b774db753d2debe3259ddc6c4deb8a86b7c4cf2d6d6
File Format: BIOS Recovery Image File
File Name: BIOS_IMG.rcv
File Size: 55.25 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 Recovery image file. This file is used for the System BIOS Recovery process to recover a system from a corrupted BIOS.
To ensure the integrity of your download, please verify the checksum value.
MD5:
2d7cc77f86c50ddcb807920232556bfc
SHA1:
fe5f709eb2a5b63cd6e90c133fc3a0ffa1d00998
SHA-256:
9a105621f826022f11bc7b774db753d2debe3259ddc6c4deb8a86b7c4cf2d6d6

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

Additional details

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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 5550 / Precision 3590
Precision 3591
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.

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.
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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