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 Inspiron 3459/3559 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. This update addresses the Intel Security Advisory INTEL-SA-00086. 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

- Updated the handling of preboot authentication information by firmware.
- Updated UEFI variable input validation.
- Updated the handling of 3rd party Option ROM loading.
- Updated SPI flash command configuration settings.
- Updated to the latest CPU microcode to address CVE-2017-5715.
- Updated Intel ME Firmware to address security advisory INTEL-SA-00086 (CVE-2017-5705 & CVE-2017-5708)
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Version

1.5.3, 1.5.3

Release date

06 Feb 2018

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: Inspiron_3459_3559_1.5.3.exe
File Size: 6.17 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:
098226ec9ea703c7fd837ad084f621b2
SHA1:
41e85f0d5fc25c532c06a7bf5fe2efc6a8507c12
SHA-256:
ff5f47a0d13159e0cdd2376bcd8af80d002277b3e80d2779db3d2f538a6108f8

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

Additional details

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DELL BIOS IRIS SLK
Updating the BIOS from Windows

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If it 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 the power or interrupt the BIOS update process during the update.

Download and Installation
1. Click Download File, to download the file.
2. Click Save to save the file to your hard drive.
3. Browse to the location where you downloaded the file and 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 and usage guide.

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