Warning: Do not turn off your computer or disconnect from your power source while updating the BIOS or you may harm your computer. During the update, your computer will restart and you will briefly see a black screen.

Dell XPS 15 9550 System BIOS

Restart required
This package contains the Dell system BIOS update. BIOS is a firmware 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 advisories INTEL-SA-00213 and INTEL-SA-00233. A security advisory is a statement when a product is impacted by a security vulnerability and a remedy is available.

Fixes & Enhancements

Fixes:
- Fixed the issue where the mouse lags when the Dell TB16 dock is unplugged or plugged in.
- Fixed the issue where the screen does not display content when the lid is opened and closed repeatedly.
- Firmware updates to address security advisory INTEL-SA-00213 (CVE-2019-0086, CVE-2019-0091, CVE-2019-0092, CVE-2019-0093, CVE-2019-0094 and CVE-2019-0096)
- Firmware updates to address security advisories INTEL-SA-00233(CVE-2018-12126, CVE-2018-12127, CVE-2018-12130 and CVE-2019-11091)
- Removed the preboot Intel RST Manager Optimized Defaults option.
- Fixed the issue where the BitLocker prompts for recovery. It occurs when Auto Power On option in BIOS setup is set to wake up the system at a specific time.

Enhancements:
- Modified battery algorithm to prolong lifespan and minimize risk of swelling.

Version

Version 1.12.0, 1.12.0

Category

BIOS

Release date

18 Nov 2019

Last Updated

18 Nov 2019

Importance

Available formats

File Format: Windows/DOS
File Name: XPS_9550_1.12.0.exe
Download Type: HTTP
File Size: 9.71 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.
To ensure the integrity of your download, please verify the checksum value.
MD5:
bdfbdf4fae89e38936f0adba1fb58662
SHA1:
5133059a96394ba81e1d01593bbe9f69e8103476
SHA-256:
1accf8362358fb76826fba930c0a023f62f1ca87af4ab1469f46805bfd382929

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

1.13.1 06 Jan 2020
1.11.2 28 Aug 2019
1.9.0 23 Aug 2019
1.10.0 21 Mar 2019
1.8.0 05 Oct 2018
1.7.0 04 May 2018
1.6.1 06 Feb 2018
1.5.1 14 Nov 2017
1.4.0 15 Sep 2017
XPS 15 9550 System BIOS
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.

Updating the BIOS from DOS (Non-Windows users)

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 power or interrupt the BIOS update process during the update.

Installation
Note: You must provide a bootable USB drive. This executable file does not create the DOS system files.
1. Copy the downloaded file to a bootable USB drive.
2. Power on the system and then Press the F12 key.
3. Select USB Storage Device and boot to the DOS prompt.
4. Run the file by typing following command. For example:
C:\ XPS_15_9550_X.Y.Z.exe
Where C is the drive letter of the USB device where the executable file is located and XPS_15_9550_X.Y.Z.exe is the name of the downloaded file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.

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