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 5280/5288/5480/5488/5580 and Precision 3520 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 provides the Dell System BIOS update and is supported on Dell Latitude 5280/5288/5480/5488/5580 and Precision 3520 for Windows Operating Systems.
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Fixes & Enhancements

Fixes:
- Fixed WLAN Intel 8265 data transmission issue.
- Fixed NVMe SED (AHCI mode) booting issue when DELL DDP|E Pre-Boot Authentication is activated.
- Fixed Dell Thunderbolt dock (TB16) missing issue with 180W power adapter.
- Fixed integrity chaining enforcement for Intel Boot Guard.
- Resolved video flicker issue for Linux OSes with Intel Skylake CPU.
- Resolved USB headset audio issue with Dell Thunderbolt dock. (TB16)

Enhancements:
- Updated Embedded Controller Engine Firmware.
- Updated CPU microcode.
Read More

Version

1.5.3, 1.5.3

Release date

23 Aug 2017

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
File Format: CPG BIOS Executable for Windows/DOS
File Name: Latitude_5X80_Precision_3520_1.5.3.exe
File Size: 19.21 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:
fd8e372c02dc280a181e5bde98be2751
SHA1:
1fff777dac1904678a0f3ca85904d4312022a259
SHA-256:
257b3c0c5f4b1af74c947312fef2528b0e8843292e89e9d9a82bf94d0bb3c069

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

Additional details

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Latitude 5280/5480/5580, Precision 3520
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 hard drive.

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 and usage guide.

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