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 XPS 15 9550 1.2.18 A16 System BIOS

Restart required

XPS 15 9550 1.2.18 BIOS

Recommended

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Fixes & Enhancements

1.Fixed system may drop battery un-expected
2.Improve PCIE NVMe Stability
3.Fixed Panel flick issue
4.Fixed Microsoft Bitlocker issue
5.Improved the DELL ThunderBolt Dock Stability
6.Fixed ST Microelectronics Motion Sensor Driver shows disabled while spindle HDD +mSATA installed

Version

1.2.18, 1.2.18

Release date

19 Dec 2016

Download Type

System 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: XPS_9550_1.2.18.exe

File Size: 9.23 MB

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.

Download

To ensure the integrity of your download, please verify the checksum value.

MD5:

43364c64753c8aab7c2dd813f50f0c40

SHA1:

fd9cb1cda600b3b5f340bfdb8ba9f7b2fa90908f

SHA-256:

87523fd9c70c3076a25f6ae0e1e695aa8c851fba8b6563cf6695e945ed2ee5a9

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